Aerial seeding bag for desert tree planting

Abstract

The invention provides an aerial seeding bag for desert tree planting. The invention provides an aerial seeding bag for desert tree planting. The aerial seeding bag comprises an aerial seeding bag body and a seed bag assembly arranged in the aerial seeding bag body. Wherein the seed bag assembly comprises a plurality of seed bags which are connected together; the seed bag comprises a seed rod and a seed rod shell wrapping the periphery of the seed rod. Wherein the seed rod is prepared from the following raw materials: seeds, organic matters and water. The seed rod shell is prepared by matching diatomite, plant powder, an adhesive, vulcanized rubber particles, super absorbent resin foam particles, super absorbent resin, ammonium bicarbonate, bentonite, a polyacrylamide aqueous solution and water according to a certain proportion. The problems of low survival rate of existing desert aerial seeding tree planting and high cost and energy waste caused by aerial seeding and repeated seeding are solved, and the desert greening speed is further increased.

Description

Technical Field

[0001] The present invention relates to the field of aerial seeding for desert afforestation, and particularly to an aerial seeding bag for desert tree planting. Background Art

[0002] Desert greening, turning deserts into oases, is a dream that several generations of Chinese people have been striving for. China is the country with the largest desert area in the world and also the country with the largest annual desertification area. Desert greening is an effective measure to reduce the desertification area, increase the green vegetation area, reduce the desertification speed, prevent the pollution of the natural environment and air pollution by sandstorms, and reduce carbon dioxide.

[0003] The technology of desert tree planting and greening has always been a difficult problem in the long-term research on tree planting technology. Since many vast desert areas cannot be built with roads, vehicles cannot pass through, and manual tree planting is impossible, only tree seeds can be sown by plane every year. Moreover, repeated aerial seeding every year causes huge waste of manpower, material resources and energy. The existing aerial seeding method sows tree seeds on the sand surface, and the survival rate of the sown tree seeds is very low. Also, due to the high surface temperature, little rain and drought in the desert, it is very difficult for the seeds to take root and germinate on the hot sand surface. The sown seeds will be buried by quicksand during sandstorm weather and cannot grow. Therefore, the survival rate of the sown tree seeds is very low and it is very difficult for them to survive. Summary of the Invention

[0004] In view of this, the present invention provides an aerial seeding bag for desert tree planting, which solves the problems of low survival rate of existing desert aerial seeding tree planting, high cost and energy waste caused by aerial seeding and repeated sowing, and further improves the speed of desert greening.

[0005] The present invention provides an aerial seeding bag for desert tree planting, comprising: an aerial seeding bag and a seed packet assembly contained in the aerial seeding bag;

[0006] Wherein,

[0007] The seed packet assembly comprises a plurality of seed packets connected together;

[0008] Each seed packet comprises: a seed rod and a seed rod outer shell wrapped around the seed rod;

[0009] Wherein,

[0010] The preparation raw materials of the seed rod include: seeds, organic matter and water; wherein, the mass ratio of the seeds to the organic matter is 70∶(4 - 20);

[0011] The preparation raw materials of the seed rod outer shell include:

[0012]

[0013]

[0014] Preferably, among the raw materials for preparing the seed stick, the organic matter is the first organic matter or the second organic matter;

[0015] Among them,

[0016] The first organic matter is at least one of polyethylene oxide, polyacrylic acid, polyvinyl alcohol, polyacrylamide, and hydroxypropyl cellulose;

[0017] The second organic matter is starch dextrin;

[0018] The mass ratio of the seeds to the first organic matter is 70∶(4 - 8);

[0019] The mass ratio of the seeds to the second organic matter is 70∶20.

[0020] Preferably, the binder is a polyethylene oxide aqueous solution - based binder and / or a polyvinyl alcohol aqueous solution - based binder;

[0021] Among them,

[0022] The polyethylene oxide aqueous solution - based binder is a mixed solution of polyethylene oxide aqueous solution, linear phenolic resin varnish, and water;

[0023] The polyvinyl alcohol aqueous solution - based binder is a mixed solution of polyvinyl alcohol aqueous solution, sulfanitran, phosphoric acid aqueous solution, and water;

[0024] The solid content of the binder is 30% - 40%;

[0025] The vulcanized rubber particles are light - weight microporous vulcanized rubber, and the preferred specifications are: pore diameter 0.5 - 0.7 μm, density 0.07 - 0.2 g / cm 3 ;

[0026] The superabsorbent resin foam pellets are open - cell rigid polyurethane foam pellets and / or rigid urea - formaldehyde foam pellets; the foam density of the superabsorbent resin foam pellets is 13 - 15 kg / m 3 , and the water absorption rate is 85% water absorption within 1 min;

[0027] The superabsorbent resin is a mixture of polyacrylic acid and polyethylene glycol, or a mixture of polyacrylic acid and potassium metabisulfite.

[0028] Preferably, the specifications of the diatomaceous earth are: porosity > 90%, and the water absorption rate is 3 - 4 times its own weight;

[0029] The plant powder is preferably at least one of crop straw powder, tree powder, and dried fruit shell powder;

[0030] The density of the bentonite is 2.4 - 2.8 g / cm 3, the water absorption rate is 4 to 5 times its own weight, and the volume expansion rate is 15 times;

[0031] The solid content of the polyacrylamide aqueous solution is 5% to 10%, and the weight average molecular weight of the polyacrylamide therein is 50,000 to 100,000.

[0032] Preferably, the seed rod is prepared by the following preparation method:

[0033] S1. Mix the organic matter, water and seeds to obtain a mixed material;

[0034] S2. Mold the mixed material to obtain a seed rod;

[0035] The seed rod shell is prepared by the following preparation method:

[0036] K1. Mix diatomite, plant powder, vulcanized rubber particles, superabsorbent resin foam pellets, ammonium bicarbonate, bentonite, binder, aqueous solution of superabsorbent resin, polyacrylamide aqueous solution and water to obtain a slurry;

[0037] K2. Mold the slurry to obtain a seed rod shell; the seed rod shell is a cylindrical rod with a through hole in the center.

[0038] Preferably, in step S2, the molding method includes: pouring the mixed material obtained in step S1 into a model groove to make a long seed belt; demolding after drying, and then making a cylindrical rod;

[0039] Step K1 specifically includes:

[0040] K1a. Mix diatomite, plant powder, vulcanized rubber particles, superabsorbent resin foam pellets, ammonium bicarbonate and bentonite to obtain an initial mixed material;

[0041] K1b. Mix the initial mixed material with binder, aqueous solution of superabsorbent resin, polyacrylamide aqueous solution and water to obtain a slurry.

[0042] Preferably, the seed package is prepared by the following method:

[0043] H1. Drill holes in the shell wall of the seed rod shell, thread a string, and then insert the seed rod into the central through hole of the seed rod shell to obtain an initial seed package;

[0044] H2. Apply an organic solution on the surface of the initial seed package, dry to form a film, and form a surface coating to obtain a seed package;

[0045] The organic solution is a mixed solution of polyvinyl alcohol, glycerol and water.

[0046] Preferably, in the seed package assembly, the connection mode of several seed packages is parallel and / or series.

[0047] Preferably, the aerial seeding bag is a rapidly degradable polyvinyl alcohol packaging film with a film thickness of 25 - 40 μm;

[0048] The single - bag weight of the aerial seeding bag is 5 - 8 kg / bag.

[0049] Preferably, in the first organic matter:

[0050] The weight - average molecular weight of the polyethylene oxide is 50,000 - 100,000;

[0051] The weight - average molecular weight of the polyacrylic acid is 10,000 - 30,000;

[0052] The weight - average molecular weight of the polyvinyl alcohol is 150,000 - 200,000, and the degree of alcoholysis is 87% - 89%;

[0053] The weight - average molecular weight of the polyacrylamide is 50,000 - 100,000;

[0054] The weight - average molecular weight of the hydroxypropyl cellulose is 50,000 - 100,000, MS is 3 - 3.5, and DS is 2.2 - 2.8.

[0055] The aerial seeding bag for desert tree planting provided by the present invention includes: an aerial seeding bag and a seed - pack combination contained in the aerial seeding bag; wherein, the seed - pack combination includes a plurality of seed packs connected together; each seed pack includes: a seed rod and a seed - rod outer shell wrapped around the seed rod. Among them, the preparation raw materials of the seed rod include: seeds, organic matter, and water. The seed - rod outer shell is prepared by mixing diatomaceous earth, plant powder, binder, vulcanized rubber particles, high - water - absorbent resin foam pellets, high - water - absorbent resin, ammonium bicarbonate, bentonite, polyacrylamide aqueous solution, and water in a certain proportion. The above - mentioned seed pack of the present invention has excellent moisture absorption, water storage, and water - retention effects, can supply water to the seeds, has a heat - insulation function and can reduce the evaporation rate of water, can also provide nutrients for the seeds and has an antibacterial effect. After the seed pack is saturated with water, it can automatically disintegrate and become soft. It is light in weight, can roll with the wind after being sown, and is collectively buried in the sand. The seed pack will eventually become fertilizer and a water - storage, water - retention, and moisture - retention agent. After aerial seeding, the seed pack falls on the sand surface. Since the seeds are wrapped in the seed pack, they will not be roasted by the high temperature of the sand surface. In case of windy weather, the seed pack is buried in the sand by the flowing sand, can absorb water and quickly take root and germinate, improving the survival rate of the tree species sown in the desert, thereby reducing the number of aerial seeding times and the aerial seeding cost. Under the restraint of the nylon rope of the seed pack, the growth of clusters of small tree groups is realized. Description of the Drawings

[0056] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0057] Figure 1 It is a schematic structural diagram of the seed rod in the present invention; wherein, Figure 1 (a) is a front view, Figure 1 (b) is a sectional view;

[0058] Figure 2 It is a schematic structural diagram of the outer shell of the seed rod in the present invention; wherein, Figure 2 (a) is a front view, Figure 2 (b) is a sectional view;

[0059] Figure 3 It is a schematic structural diagram of drilling holes in the shell wall of the outer shell of the seed rod;

[0060] Figure 4 It is a schematic structural diagram of the seed package in the present invention; wherein, Figure 4 (a) is a sectional view, Figure 4 (b) is a front view;

[0061] Figure 5 It is a schematic diagram of various seed packages in the seed package assembly being connected to each other in parallel;

[0062] Figure 6 It is a schematic diagram of various seed packages in the seed package assembly being connected to each other in parallel and in series;

[0063] Figure 7 It is a schematic diagram of the composition of the aerial seeding bag for desert tree planting. Specific Embodiments

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0065] In this article, among the technical features described in an open-ended manner, it includes a closed technical solution composed of the listed features, and also includes an open technical solution containing the listed features.

[0066] The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0067] In this text, when it comes to numerical ranges, unless otherwise specified, the above numerical ranges are considered continuous and include the minimum and maximum values of the range, as well as every value between such minimum and maximum values. Further, when the range refers to integers, it includes every integer between the minimum and maximum values of the range. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be combined. In other words, unless otherwise specified, all ranges disclosed in this text should be understood to include any and all sub-ranges subsumed therein.

[0068] In this text, regarding the units of data ranges, if the unit is only attached after the right endpoint, it means that the units of the left endpoint and the right endpoint are the same. For example, 90~95℃ means that the units of both the left endpoint "90" and the right endpoint "95" are ℃.

[0069] The present invention provides a desert tree-planting aerial seeding bag, comprising: an aerial seeding bag and a seed package assembly contained in the aerial seeding bag;

[0070] Wherein,

[0071] The seed package assembly includes a plurality of seed packages connected together;

[0072] The seed package includes: a seed rod and a seed rod outer shell wrapped around the periphery of the seed rod;

[0073] Wherein,

[0074] The preparation raw materials of the seed rod include: seeds, organic matter and water; wherein, the mass ratio of the seeds to the organic matter is 70∶(4~20);

[0075] The preparation raw materials of the seed rod outer shell include:

[0076]

[0077] [Regarding the aerial seeding bag ] :

[0078] In the present invention, the aerial seeding bag is preferably a polyvinyl alcohol packaging film. In the present invention, the specifications of the polyvinyl alcohol packaging film are preferably as follows: degree of alcoholysis 89% - 90%, weight average molecular weight 10,000 - 50,000, elongation at break 50% - 600%, tensile strength 200 - 300 MPa, thickness 25 - 40 μm. The surface layer of the polyvinyl alcohol packaging film is a water-soluble film of a slowly dissolving polyurethane resin layer. In the present invention, the whole process of the polyvinyl alcohol packaging film is "a rapidly degradable polyvinyl alcohol packaging film", sourced from Mudanjiang Shuangxing Chemical Co., Ltd., and can refer to Patent ZL202210104011.9. The present invention makes the above-mentioned film into an aerial seeding bag; the present invention has no special restrictions on the bag-making method, and any film bag-making method well-known to those skilled in the art can be used. In the present invention, the single-bag weight of the aerial seeding bag is preferably 5 - 8 kg / bag, specifically it can be 5 kg / bag, 6 kg / bag, 7 kg / bag, 8 kg / bag.

[0079] [Regarding the seed stick]:

[0080] I. Regarding the raw materials of the seed stick:

[0081] In the present invention, the raw materials for preparing the seed stick include: seeds, organic matter, and water.

[0082] In the present invention, the seeds are preferably tree seeds and / or grass seeds. There are no special restrictions on their types, and they can be conventional seeds for desert chlorination.

[0083] In the present invention, the organic matter is the first organic matter or the second organic matter.

[0084] The first organic matter is preferably at least one of polyethylene oxide, polyacrylic acid, polyvinyl alcohol, polyacrylamide, and hydroxypropyl cellulose, all of which are water-soluble resins. Among them, the weight-average molecular weight of the polyethylene oxide is preferably 50,000 to 100,000, specifically 50,000, 60,000, 70,000, 80,000, 90,000, 100,000. The weight-average molecular weight of the polyacrylic acid is preferably 10,000 to 30,000, specifically 10,000, 15,000, 20,000, 25,000, 30,000. The weight-average molecular weight of the polyvinyl alcohol is preferably 150,000 to 200,000, and the alcoholysis degree is 87% to 89%; among them, the molecular weight can be specifically 150,000, 160,000, 170,000, 180,000, 190,000, 200,000, and the alcoholysis degree can be specifically 87%, 87.5%, 88%, 88.5%, 89%. The weight-average molecular weight of the polyacrylamide is preferably 50,000 to 100,000, specifically 50,000, 60,000, 70,000, 80,000, 90,000, 100,000. The weight-average molecular weight of the hydroxypropyl cellulose is preferably 50,000 to 100,000, the MS (degree of hydroxypropyl substitution) is preferably 3 to 3.5, and the DS (degree of methoxy substitution) is preferably 2.2 to 2.8; among them, the molecular weight can be specifically 50,000, 60,000, 70,000, 80,000, 90,000, 100,000; the MS can be specifically 3.0, 3.1, 3.2, 3.3, 3.4, 3.5; the DS can be specifically 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8. The present invention has no special restrictions on the source of the above-mentioned first organic matter, and it can be a commercially available product.

[0085] The second organic matter is preferably starch dextrin (potato starch). The solid content of the starch dextrin is preferably 30%.

[0086] In the present invention, when the organic matter is the first organic matter, the mass ratio of the seeds to the organic matter is 70:(4 - 8), specifically 70:4, 70:4.5, 70:5, 70:5.5, 70:6, 70:6.5, 70:7, 70:7.5, 70:8. When the organic matter is the second organic matter, the mass ratio of the seeds to the organic matter is 70:20. Therefore, according to the type and dosage of the organic matter, the raw materials for preparing the seed stick can be divided as follows:

[0087] The raw materials for preparing the seed stick include: seeds, the first organic matter, and water; among them, the mass ratio of the seeds to the first organic matter is 70:(4 - 8); or, it includes: seeds, the second organic matter, and water; among them, the mass ratio of the seeds to the second organic matter is 70:20.

[0088] In the present invention, the dosage of the water is preferably such that the viscosity of the aqueous solution obtained by mixing the materials can form a continuous filament more than 1 m long when picked up with a glass rod.

[0089] II. Regarding the preparation method of the seed stick:

[0090] In the present invention, the seed stick is preferably prepared by the following preparation method:

[0091] S1. Mix the organic matter, water and seeds to obtain a mixed material;

[0092] S2. Shape the mixed material to obtain a seed stick.

[0093] Regarding step S1:

[0094] In the present invention, step S1 preferably specifically includes: mixing the organic matter with water to obtain an aqueous solution; mixing the aqueous solution with seeds to obtain a mixed material. Among them, when the organic matter is polyethylene oxide, polyacrylic acid, polyacrylamide, hydroxypropyl cellulose or starch dextrin (potato starch), it is preferably to mix normal temperature water (20-30 °C) with the organic matter to prepare a viscous aqueous solution, specifically 20 °C, 21 °C, 22 °C, 23 °C, 24 °C, 25 °C, 26 °C, 27 °C, 28 °C, 29 °C, 30 °C. When the organic matter is polyvinyl alcohol, it is preferably to dissolve the polyvinyl alcohol in water below 23 °C first, and then heat it to 90-95 °C (specifically 90 °C, 91 °C, 92 °C, 93 °C, 94 °C, 95 °C) for mixing to make a viscous liquid. The rotation speed of mixing the organic matter and water is preferably 60-120 r / min, specifically 60 r / min, 70 r / min, 80 r / min, 90 r / min, 100 r / min, 110 r / min, 120 r / min; fully mix at the above stirring speed until completely dissolved in water to obtain a viscous aqueous solution. The viscosity of the solid content of the aqueous solution is based on the condition that when picked up with a glass rod, the drawn wire is more than 1 m and does not break. After mixing the organic matter and water to obtain an aqueous solution, then mix it with seeds; the mixing is low-speed mixing, and the rotation speed is preferably 30-60 r / min, more preferably 30 r / min, until evenly mixed, so as to obtain a mixed material.

[0095] Regarding step S2:

[0096] In the present invention, the shaping method is preferably as follows: Pour the mixed material obtained in step S1 into a model groove to make a long seed belt; after drying, demold it, and then make it into a cylindrical rod. Among them, the drying can adopt natural drying; the degree is to air dry or air dry to semi-dry. After demolding, it is preferably to adopt a rolling method to make a cylindrical rod. In the present invention, the diameter of the cylindrical rod is preferably <10 mm, and in some embodiments of the present invention, it is slightly less than but close to 10 mm. After naturally drying the cylindrical rod, cut it along the length direction to obtain several seed sticks. The length of the seed stick is preferably 40-45 mm, specifically 40 mm, 41 mm, 42 mm, 43 mm, 44 mm, 45 mm, and more preferably 40 mm.

[0097] As Figure 1 shown, Figure 1 is a schematic structural diagram of the seed stick in the present invention; among them,Figure 1 (a) is the front view, Figure 1 (b) is the sectional view. Figure 1 Among them, 1 is the seed and 2 is the aqueous solution. That is, the seed rod of the present invention is a cylinder, and its diameter is preferably <10 mm, and in some embodiments of the present invention, it is slightly less than but close to 10 mm; the length is preferably 40 - 45 mm, specifically it can be 40 mm, 41 mm, 42 mm, 43 mm, 44 mm, 45 mm, and more preferably 40 mm.

[0098] Since the seed rod is a water-absorbing material, after the seed rod is prepared and before use, it is first sealed and stored in a packaging bag (such as a PP packaging bag). The capacity of each packaging bag is preferably controlled within 10 kg.

[0099] [Regarding the seed rod shell]:

[0100] I. Regarding the raw materials of the seed rod shell:

[0101] In the present invention, the raw materials for preparing the seed rod shell include:

[0102]

[0103] The raw materials for preparing the seed rod shell of the present invention include diatomaceous earth.

[0104] In the present invention, the specifications of the diatomaceous earth are preferably: the porosity > 90%, and the water absorption rate is 3 - 4 times its own weight. In the present invention, the diatom content in the diatomaceous earth is preferably greater than 85%. In the present invention, the dosage of the diatomaceous earth can specifically be 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, 49 parts, 50 parts.

[0105] The raw materials for preparing the seed rod shell of the present invention also include plant powder.

[0106] In the present invention, the plant powder is preferably at least one of crop straw powder, tree powder, and dried fruit shell powder. Among them, the crop straw powder includes but is not limited to at least one of wheat straw powder, rice straw powder, bean straw powder, and corn straw powder. The tree powder is a powder related to trees, including at least one of branch powder, leaf powder, bark powder, and root powder. In the present invention, there is no special limitation on the mesh number of the plant powder, and it can be used in a combination of thick and thin during use; the plant powder can be used alone or the plant powder can be mixed with plant fibers. The length of the plant fibers is preferably ≤1 cm. The types of the plant fibers are preferably at least one of flax straw fibers, bean straw fibers, and wheat straw fibers. In the present invention, the dosage of the plant powder can specifically be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts.

[0107] The raw materials for preparing the outer shell of the seed stick in the present invention further include an adhesive.

[0108] In the present invention, the adhesive is preferably a polyethylene oxide aqueous solution-based adhesive and / or a polyvinyl alcohol aqueous solution-based adhesive.

[0109] Wherein:

[0110] The polyethylene oxide aqueous solution-based adhesive is a mixture of a polyethylene oxide aqueous solution, a linear phenolic resin varnish, and water. Among them, the solid content of the polyethylene oxide aqueous solution is preferably 10% to 15%, specifically 10%, 11%, 12%, 13%, 14%, 15%, and more preferably 15%. The weight-average molecular weight of the polyethylene oxide therein is preferably 100,000 to 200,000, specifically 100,000, 110,000, 120,000, 130,000, 140,000, 150,000, 160,000, 170,000, 180,000, 190,000, 200,000. The solid content of the linear phenolic resin varnish is preferably 25% to 30%, and more preferably 30%. The mass ratio of the polyethylene oxide aqueous solution to the linear phenolic resin varnish is preferably 2:(0.5 - 1), and more preferably 2:1. The overall solid content of the polyethylene oxide aqueous solution-based adhesive is preferably 30% to 40%, specifically 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%. In the present invention, the polyethylene oxide aqueous solution-based adhesive can be prepared by the following method: placing the polyethylene oxide aqueous solution, the linear phenolic resin varnish, and water in a mixer and stirring and mixing them to obtain the polyethylene oxide aqueous solution-based adhesive. Among them, the rotation speed of the stirring and mixing is preferably 60 to 120 r / min, specifically 60 r / min, 70 r / min, 80 r / min, 90 r / min, 100 r / min, 110 r / min, 120 r / min. The time of the stirring and mixing is preferably 5 to 8 min, specifically 5 min, 6 min, 7 min, 8 min. The stirring and mixing can be carried out at room temperature. After being stirred and mixed evenly, the polyethylene oxide aqueous solution-based adhesive is obtained.

[0111] The polyvinyl alcohol aqueous solution-based adhesive is a mixture of a polyvinyl alcohol aqueous solution, sulfanitran, a phosphoric acid aqueous solution, and water. The solid content of the polyvinyl alcohol aqueous solution is preferably 15% to 20%, specifically 15%, 16%, 17%, 18%, 19%, 20%, and more preferably 20%. The specifications of the polyvinyl alcohol are preferably: a degree of alcoholysis of 87% to 89% and a weight-average molecular weight of 170,000 to 220,000; the degree of alcoholysis can specifically be 87%, 87.5%, 88%, 88.5%, 89%; the molecular weight can specifically be 170,000, 175,000, 180,000, 185,000, 190,000, 195,000, 200,000, 205,000, 210,000, 220,000. The solid content of the phosphoric acid aqueous solution is preferably 8% to 10%, and more preferably 10%. The mass ratio of the polyvinyl alcohol aqueous solution, sulfanitran, and the phosphoric acid aqueous solution is preferably 83:(1 - 2):(10 - 15), and more preferably 83:2:15. The overall solid content of the polyvinyl alcohol aqueous solution-based adhesive is preferably 30% to 40%, specifically 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%. In the present invention, the polyvinyl alcohol aqueous solution-based adhesive can be prepared by the following method: placing the polyvinyl alcohol aqueous solution, sulfanitran, the phosphoric acid aqueous solution, and water in a mixer and stirring and mixing to obtain the polyvinyl alcohol aqueous solution-based adhesive. Among them, the rotation speed of the stirring and mixing is preferably 60 to 120 r / min, specifically 60 r / min, 70 r / min, 80 r / min, 90 r / min, 100 r / min, 110 r / min, 120 r / min. The time of the stirring and mixing is preferably 5 to 8 min, specifically 5 min, 6 min, 7 min, 8 min. The stirring and mixing can be carried out at room temperature. After being stirred and mixed evenly, the polyvinyl alcohol aqueous solution-based adhesive is obtained.

[0112] In the present invention, the dosage of the adhesive is 10 to 20 parts, specifically 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts.

[0113] The preparation raw materials of the seed stick shell of the present invention further include vulcanized rubber particles.

[0114] In the present invention, the vulcanized rubber particles are light (soft) microporous vulcanized rubber, and the specifications are preferably: a pore diameter of 0.5 to 0.7 μm and a density of 0.07 to 0.2 g / cm 3 . Among them, the pore diameter can specifically be 0.5 μm, 0.6 μm, 0.7 μm. The density can specifically be 0.07 g / cm 3 , 0.08 g / cm 3 , 0.09 g / cm 3 , 0.1 g / cm 3, 0.11 g / cm 3 , 0.12 g / cm 3 , 0.13 g / cm 3 , 0.14 g / cm 3 , 0.15 g / cm 3 , 0.16 g / cm 3 , 0.17 g / cm 3 , 0.18 g / cm 3 , 0.19 g / cm 3 , 0.2 g / cm 3 . In the present invention, the dosage of the vulcanized rubber particles is 2 to 8 parts, specifically 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, or 8 parts.

[0115] The preparation raw materials of the seed rod shell of the present invention further include high water-absorbing resin foam pellets.

[0116] In the present invention, the high water-absorbing resin foam pellets are preferably open-cell rigid polyurethane foam pellets and / or rigid urea-formaldehyde foam pellets. Among them, the foam density of the open-cell rigid polyurethane foam pellets is preferably 13 to 15 kg / m 3 , specifically 13 kg / m 3 , 13.5 kg / m 3 , 14 kg / m 3 , 14.5 kg / m 3 , 15 kg / m 3 . The water absorption rate of the open-cell rigid polyurethane foam pellets is preferably: absorbing 85% of water (which is the volume water absorption rate) within 1 minute. The foam density of the rigid urea-formaldehyde foam pellets is preferably 13 to 15 kg / m 3 , specifically 13 kg / m 3 , 13.5 kg / m 3 , 14 kg / m 3 , 14.5 kg / m 3 , 15 kg / m 3 . The water absorption rate of the rigid urea-formaldehyde foam pellets is preferably: absorbing 85% of water (which is the volume water absorption rate) within 1 minute. In the present invention, the dosage of the high water-absorbing resin foam pellets is 3 to 10 parts, specifically 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts.

[0117] The preparation raw materials of the seed rod shell of the present invention further include high water-absorbing resin.

[0118] In the present invention, the superabsorbent resin is different from the above-mentioned superabsorbent resin foam pellets. In the present invention, the superabsorbent resin is preferably a mixture of polyacrylic acid and polyethylene glycol, or a mixture of polyacrylic acid and potassium metabisulfite. Among them, the specifications of the polyacrylic acid are preferably: the weight-average molecular weight is 10,000 to 30,000, the pH value is 2.0, and the viscosity at (25°C) is 1.7 to 4.5 Pa·s. Among them, the molecular weight can specifically be 10,000, 12,000, 14,000, 16,000, 18,000, 20,000, 22,000, 24,000, 26,000, 28,000, 30,000. The viscosity at (25°C) can specifically be 1.7 Pa·s, 2.0 Pa·s, 2.5 Pa·s, 3.0 Pa·s, 3.5 Pa·s, 4.0 Pa·s, 4.5 Pa·s. The weight-average molecular weight of the polyethylene glycol is preferably 400, and it is a viscous liquid. In the mixture of polyacrylic acid and polyethylene glycol, the mass percentage of polyacrylic acid is preferably 99.9% to 99.936%, and can specifically be 99.91%, 99.92%, 99.93%, 99.936%. In the mixture of polyacrylic acid and potassium metabisulfite, the mass percentage of polyacrylic acid is preferably 99.5% to 99.9%, and can specifically be 99.5%, 99.6%, 99.7%, 99.8%, 99.9%. In the present invention, the dosage of the superabsorbent resin is 2 to 6 parts, and can specifically be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts.

[0119] In the present invention, when using the superabsorbent resin to prepare the seed rod shell, it is preferably made into an aqueous solution before use, that is, the superabsorbent resin is used in the form of an aqueous solution. Its preparation process is preferably as follows: The superabsorbent resin and water are placed in a mixer and stirred and mixed to obtain an aqueous solution of the superabsorbent resin. Among them, the temperature of the stirring and mixing can be normal temperature, which can be 25 to 30°C, and can specifically be 25°C, 26°C, 27°C, 28°C, 29°C, 30°C. The rotation speed of the stirring and mixing is preferably 60 to 120 r / min, and can specifically be 60 r / min, 70 r / min, 80 r / min, 90 r / min, 100 r / min, 110 r / min, 120 r / min. After being stirred and mixed evenly, an aqueous solution of the superabsorbent resin is obtained. In the present invention, the solid content of the aqueous solution of the superabsorbent resin is preferably 40% to 50%, and can specifically be 40%, 45%, 50%, and more preferably 50%.

[0120] The raw material for preparing the seed rod shell of the present invention further includes ammonium bicarbonate.

[0121] In the present invention, the dosage of ammonium bicarbonate is 1 to 3 parts, specifically it can be 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2.0 parts, 2.1 parts, 2.2 parts, 2.3 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.7 parts, 2.8 parts, 2.9 parts, 3.0 parts.

[0122] The preparation raw materials of the seed rod shell of the present invention further include bentonite.

[0123] In the present invention, the density of the bentonite is preferably 2.4 to 2.8 g / cm 3 , specifically it can be 2.4 g / cm 3 , 2.5 g / cm 3 , 2.6 g / cm 3 , 2.7 g / cm 3 , 2.8 g / cm 3 . The water absorption rate of the bentonite is 4 to 5 times its own weight, and the volume expansion rate is 15 times. In the present invention, the dosage of the bentonite is 5 to 15 parts, specifically it can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts.

[0124] The preparation raw materials of the seed rod shell of the present invention further include an aqueous solution of polyacrylamide.

[0125] In the present invention, the solid content of the aqueous solution of polyacrylamide is preferably 5% to 10%, specifically it can be 5%, 6%, 7%, 8%, 9%, 10%, and more preferably 10%. The weight average molecular weight of the polyacrylamide therein is preferably 50,000 to 100,000, specifically it can be 50,000, 55,000, 60,000, 65,000, 70,000, 75,000, 80,000, 85,000, 90,000, 95,000, 100,000. In the present invention, the dosage of the aqueous solution of polyacrylamide is 3 to 10 parts, specifically it can be 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts.

[0126] The preparation raw materials of the seed rod shell of the present invention further include water.

[0127] In the present invention, the water can be domestic water or natural fresh water. In the present invention, the dosage of the water is preferably such that the solid content of the finally obtained slurry (i.e., the raw material mixture for preparing the seed rod shell is a slurry) is 55% to 65%, specifically it can be 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%.

[0128] II. Regarding the preparation method of the seed rod shell:

[0129] In the present invention, the seed rod shell can be obtained through the following preparation method:

[0130] K1. Mix diatomaceous earth, plant powder, vulcanized rubber particles, superabsorbent resin foam pellets, ammonium bicarbonate, bentonite, binder, an aqueous solution of superabsorbent resin, an aqueous solution of polyacrylamide, and water to obtain a slurry.

[0131] K2. Mold the slurry to obtain a seed rod shell; the seed rod shell is a cylindrical rod with a through hole in the center.

[0132] Regarding step K1:

[0133] In the present invention, step K1 preferably specifically includes: K1a. Mix diatomaceous earth, plant powder, vulcanized rubber particles, superabsorbent resin foam pellets, ammonium bicarbonate, and bentonite to obtain an initial mixture; K1b. Mix the initial mixture with a binder, an aqueous solution of superabsorbent resin, an aqueous solution of polyacrylamide, and water to obtain a slurry. Among them, in step K1a, the mixing can be carried out in a mixer; the stirring speed of the mixing is preferably 30 - 60 r / min, specifically 30 r / min, 40 r / min, 50 r / min, 60 r / min; the stirring time of the mixing is preferably 5 - 10 min, specifically 5 min, 6 min, 7 min, 8 min, 9 min, 10 min. The mixing can be carried out at room temperature. In step K1b, the mixing can be carried out in a mixer; the stirring speed of the mixing is preferably 30 - 60 r / min, specifically 30 r / min, 40 r / min, 50 r / min, 60 r / min; the stirring time of the mixing is preferably 10 - 15 min, specifically 10 min, 11 min, 12 min, 13 min, 14 min, 15 min. The mixing can be carried out at room temperature. After mixing evenly, a viscous slurry for preparing the seed rod shell is obtained.

[0134] Regarding step K2:

[0135] In the present invention, the forming is carried out by using the well-known model thick slurry forming method in the art. The forming objective is to obtain a cylindrical bar with a through hole in the center. The length of the cylindrical bar can be 500 - 1000 mm, specifically 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm. After obtaining the cylindrical bar with a through hole in the center, it is cut along the length direction to obtain a number of cylindrical bars with through holes in the center, which are the seed rod shells. That is, the seed rod shell of the present invention is in the shape of a cylindrical bar as a whole, and has a through hole in the center (for containing the seed rod described above). In the present invention, the wall thickness of the seed rod shell is preferably 25 - 30 mm, more preferably 30 mm. The diameter of the central through hole of the seed rod shell is preferably ≥10 mm, specifically matching the diameter of the seed rod and being able to insert the seed rod tightly; in some embodiments of the present invention, it is slightly larger than but close to 10 mm. The length of the seed rod shell > the length of the seed rod, preferably 60 - 65 mm, more preferably 60 mm. The surface of the seed rod shell is required to be as smooth as possible, but a pitted surface or pits are also allowed.

[0136] As Figure 2 shown, Figure 2 is a schematic structural view of the seed rod shell in the present invention; wherein, Figure 2 (a) is a front view, Figure 2 (b) is a sectional view. Figure 2 In it, 1 is the shell wall of the seed rod shell, and 2 is the central through hole of the seed rod shell. That is, the seed rod shell of the present invention is in the shape of a cylindrical bar and has a through hole in the center.

[0137] The mold used for preparing the seed rod shell can be made of any material in engineering plastics. For the convenience of demolding, the present invention adopts a model composed of two semi-cylindrical tubes joined together, and the central hole is made of a round tube with a diameter greater than 10 mm. When in use, both groups of round tubes are inserted into the chassis and fixed. During forming, the slurry of the seed rod shell is injected into the model tube, and the chassis uses an oscillator to vibrate the injected slurry to make it compact. After natural drying to semi-dry, it is demolded, the central round tube and the shell mold are removed, and a cylindrical bar with a through hole in the center is obtained. Then it is dried until the moisture content is less than 8%, and then cut into several cylinders to obtain the seed rod shell. As Figure 2 shown. Specifically, the model preparation method can be: making a round tube (thick tube) with an outer diameter of 71.5 mm, a length of 600 mm, and a wall thickness of 1.5 mm from polyvinyl chloride; then making a round tube (thin tube) with an outer diameter of 10 mm, a wall thickness of 1.5 mm, and a length of 600 mm from polyvinyl chloride. The thick tube and the thin tube are sleeved together and inserted on the chassis to obtain the seed rod shell model. The sizes of the thick tube and the thin tube are not limited to the above content, and other size combinations are also possible. Another method can also be cutting a cylindrical tube (outer tube) into two semi-circles and then inserting them into the chassis, and adding a round tube fixing ring for easy demolding.

[0138] [Regarding the seed package]:

[0139] I. Regarding the composition of the seed package:

[0140] In the present invention, the seed package includes: a seed rod and a seed rod outer shell wrapped around the periphery of the seed rod.

[0141] In the present invention, as described above, the seed rod is a cylinder, and the dimensions are the same as those described above, which will not be elaborated here.

[0142] In the present invention, as described above, the seed rod outer shell is a cylindrical rod with a central through hole. The dimensions are the same as those described above, which will not be elaborated here.

[0143] In the present invention, the dimensions of the seed rod and the seed rod outer shell are not limited to the specific values or value ranges described above. The dimensional relationship between the two only needs to conform to the above, that is, the diameter of the seed rod matches the central through hole of the seed rod outer shell, so that the seed rod can be tightly inserted into the central through hole of the seed rod outer shell, and the length of the seed rod outer shell > the length of the seed rod, so that there are vacant sections at both ends of the seed rod outer shell.

[0144] In the present invention, the seed rod is located in the central through hole of the seed rod outer shell; that is, the seed rod is completely inserted into the interior of the seed rod outer shell, and any end of the seed rod does not protrude beyond the seed rod outer shell. Preferably, the seed rod is located at the central position in the length direction of the seed rod outer shell; that is, the vacant lengths at both ends of the seed rod outer shell (that is, the lengths not filled by the seed rod, and there is a section at each end of the seed rod outer shell) can be equal or unequal, and more preferably equal.

[0145] In the present invention, the seed package further includes: a string. In the present invention, the string is preferably inserted through the shell wall of the seed rod outer shell. Specifically, through holes are drilled in the shell wall of the seed rod outer shell, so that the string passes through the shell wall through holes and enters the shell wall of the seed rod outer shell, and then reaches its central through hole. For more details, see the following text. The string is preferably a nylon string; the nylon string is a biodegradable nylon string. The length of the string is preferably 1 - 1.5 m, and specifically can be 1 m, 1.1 m, 1.2 m, 1.3 m, 1.4 m, 1.5 m.

[0146] II. Regarding the preparation method of the seed package:

[0147] In the present invention, the seed package is preferably prepared by the following method:

[0148] H1. Drill holes in the shell wall of the seed rod outer shell, thread the string, and then insert the seed rod into the central through hole of the seed rod outer shell to obtain an initial seed package;

[0149] H2. Apply an organic solution on the surface of the initial seed packet, dry to form a film, and form a surface coating to obtain the seed packet.

[0150] Regarding step H1:

[0151] Drill holes in the shell wall of the seed rod housing. Specifically, drill a through hole in the shell wall of the seed rod housing. The diameter of the through hole is relatively small and only needs to be able to pass a string. As Figure 3 shown, Figure 3 Figure 385 is a schematic structural diagram of drilling holes in the shell wall of the seed rod housing. Among them, 1 is the shell wall of the seed rod housing, 2 is the central through hole of the seed rod housing, 3 is the through hole drilled in the shell wall, and 4 is the string passing through the through hole in the shell wall. The string is preferably a nylon string; the nylon string is a biodegradable nylon string. The length of the string is preferably 1 - 1.5 m, and specifically can be 1 m, 1.1 m, 1.2 m, 1.3 m, 1.4 m, 1.5 m. In addition to the above method, other methods can also be used for drilling and threading, mainly to tightly connect the string with the seed rod housing.

[0152] After the above operations, insert the seed rod into the central through hole of the seed rod housing, insert it tightly and firmly so that the seed rod and the seed rod housing are tightly fitted. As can be seen from the previous text, the length of the seed rod < the length of the seed rod housing. When inserting the seed rod, the seed rod should be completely inserted into the interior of the seed rod housing, that is, the seed rod cannot protrude outside the seed rod housing, and both ends of the seed rod should be retracted into the two ends of the seed rod housing. The remaining lengths at both ends of the seed rod housing (that is, the lengths that are not filled by the seed rod, and there is a section at each of the two ends of the seed rod housing) can be equal or unequal, and more preferably equal (that is, from the length direction, the seed rod is located at the center position of the seed rod housing). After the above treatment, the initial seed packet is obtained.

[0153] Regarding step H2:

[0154] In the present invention, the organic solution is preferably a mixed solution of polyvinyl alcohol, glycerol and water. Among them, the specifications of the polyvinyl alcohol are preferably: degree of alcoholysis 87% - 89%, weight average molecular weight 170,000 - 220,000; the degree of alcoholysis can specifically be 87%, 87.5%, 88%, 88.5%, 89%; the molecular weight can specifically be 170,000, 175,000, 180,000, 185,000, 190,000, 195,000, 200,000, 205,000, 210,000, 220,000. The mass ratio of the polyvinyl alcohol to the glycerol is preferably 75:(20 - 25), and more preferably 75:25. The amount of water used is preferably such that the solid content of the overall organic solution is 30% - 40%, and specifically can be 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%.

[0155] In the present invention, when applying the organic solution to the exposed surface of the seed rod housing, it is preferably applied in a suspended manner, for example, suspended by a string. The application method is preferably spraying. Applying the organic solution to the surface of the initial seed package means that the organic solution is applied to all exposed surfaces (the string is not required, that is, the string can be sprayed or not), specifically including the cylindrical outer surface of the seed rod housing, the end faces at both ends of the seed rod housing, the inner wall surfaces of the empty sections at both ends of the seed rod housing (the empty length section not filled by the seed rod), and the end faces at both ends of the seed rod. After spraying the organic solution and drying to form a film, a surface coating is formed on the entire outer surface of the seed package as a protective film. Among them, the drying is preferably natural drying. The thickness of the surface coating (i.e., the thickness of the dry film) is preferably 90 - 120 μm, specifically 90 μm, 100 μm, 110 μm, 120 μm. Among them, the coating thickness at both ends of the seed rod is preferably greater than 120 μm and less than 150 μm. After the above treatment, a seed package is obtained. As Figure 4 shown, Figure 4 is a schematic structural view of the seed package of the present invention; among them, Figure 4 (a) is a cross-sectional view, Figure 4 (b) is a front view. Figure 4 In it, 1 is the seed rod housing, 2 is the string, 3 is the seed rod, and 4 is the surface coating.

[0156] [Regarding the seed package assembly]:

[0157] In the present invention, the seed package assembly includes several seed packages connected together. In the present invention, according to the bulk density of each aerial seeding bag of 5 - 8 kg, the number N of seed packages that can be loaded in a single aerial seeding bag is calculated, and then N seed packages are connected together through their respective strings to form a seed package assembly. In the present invention, the connection method of the N seed packages is in parallel and / or in series. One connection method is the parallel connection method, as Figure 5 shown, Figure 5 is a schematic view of the connection of various seed packages in the seed package assembly in a parallel manner; among them, the ends of the strings of several seed packages are tied together, and various seed packages are in parallel. Another connection method is the parallel and series connection method, as Figure 6 shown, Figure 6 is a schematic view of the connection of various seed packages in the seed package assembly in a parallel and series manner; among them, the ends of the strings of several seed packages are tied together, and various seed packages are in parallel to form a first-gradient parallel body, and then, a seed package is tied to the string of each seed package in the first-gradient parallel body, that is, a seed package is connected in series to each seed package. In addition to the above methods, other connection methods can also be used.

[0158] Before the seed packets are loaded into the aerial seeding bags, the nylon cords of N seed packets are first tied together in a series and / or parallel manner to form an indivisible group, enabling the N seed packets after aerial seeding to form or grow into a dense grove group where the trees in the grove group grow with roots connected. The moisture around the roots can be shared, and it also has the functions of sand fixation, heat preservation and water retention. The dense forest also has the ability to resist storms, which helps to improve the survival rate of the trees. Thus, the speed of desert greening is increased.

[0159] [Regarding the aerial seeding bag for desert tree planting]:

[0160] In the present invention, after obtaining the seed packet combination, the seed packet combination is loaded into the aerial seeding bag, and it is sealed (or tightened) without excluding air to obtain the aerial seeding bag for desert tree planting. As Figure 7 shown, Figure 7 is a schematic diagram of the composition of the aerial seeding bag for desert tree planting; among them, the outer layer is the aerial seeding bag, and inside the bag is the seed packet combination. In the present invention, preferably, every two aerial seeding bags are used by being sleeved together, that is, two aerial seeding bags are sleeved together to form two layers of bags, and then the seed packet combination is loaded inside.

[0161] In the present invention, before use, the aerial seeding bag for desert tree planting can be stored by sealing with a woven bag or a plastic bag, and there are no special requirements.

[0162] The aerial seeding bag for desert tree planting provided by the present invention has the following beneficial effects:

[0163] 1. The seed packet is made of a water-soluble polymer re-wettable adhesive and uses materials such as diatomaceous earth, vulcanized rubber, superabsorbent resin, bentonite, and polyacrylamide with water absorption and heat insulation properties, endowing the seed packet with water absorption, water storage, water retention and heat insulation properties. It can absorb moisture from the atmosphere and absorb moisture in water again, continuously supplying water to the seeds wrapped inside. Ensure that after the seeds are sown, they do not lose water and dry up on the high-temperature sand surface, reducing the evaporation of limited moisture.

[0164] 2. The seed packet is both a water absorption, water supply and water storage packet and a nutrient packet for tree seeds. Ammonium bicarbonate and plant powder in the seed packet components are both fertilizers for the seeds, and polyethylene oxide is also an excellent antibacterial and antifungal agent for the seeds, which can promote the rapid growth of the seeds after germination.

[0165] 3. For the aerial seeding bag for desert tree planting of the present invention, the tree seeds sown can grow into clusters of grove groups after growth. Due to the roots of the dense groves being connected, the moisture of the ground roots can be shared. It reduces the evaporation and loss of moisture. It also enhances the wind and sand resistance ability of the saplings, preventing the saplings from being blown down in sandstorms. They can take root deeply in the sandy soil.

[0166] 4. Since the seed bag uses heat-insulating and heat-insulating materials with low thermal conductivity, the seed bag has a heat-insulating effect on the seeds on the hot sand surface after aerial sowing. The heat energy will not be directly absorbed by the seeds, so the problem of seeds falling to the ground after aerial sowing and being dried by high temperature without germination is prevented.

[0167] 5. After absorbing water, the seed package will swell and become soft, and then be buried in the sand, eventually becoming a moisturizer for the tree root hair.

[0168] 6. The aerial seeding bag is made of a rapidly degradable polyvinyl alcohol packaging film. After being broadcast, the aerial seeding bag will explode naturally when it impacts the ground. It will become water-soluble after absorbing moisture in the air and rainwater, and there will be no "white pollution".

[0169] The technical core of the present invention is the functional design of the seed bag, and the main functions of the seed bag are to absorb moisture, store water, retain water, and supply water to the seeds, and have heat insulation functions and reduce the evaporation rate of water; it also provides nutrition and antibacterial effects for seeds; the seed bag can automatically disintegrate and become soft after saturating with water; the seed bag should also be light in weight, and can roll with the wind after broadcasting, and be collectively buried in the sand. The seed bag will eventually become a fertilizer and a water storage and moisture retaining agent, and be comprehensively utilized. Based on this, the present invention selects the following seed bag materials, formula components, and structural designs that can meet the above functions of the seed bag:

[0170] (1) The seed stick shell formula includes 30-50 parts of diatomaceous earth, which is used to obtain a material that is light and can provide nutrients to seeds, because diatomaceous earth is composed of 70%-90% diatom remains, and its main components are protein and a small amount of carbonate and clay. Diatomaceous earth is light and soft, porous, with a porosity of about 90%, and can absorb 1.5-4 times its own water. It is a good adsorption material. In addition, diatomaceous earth has very low thermal conductivity and is also an excellent thermal insulation material. Therefore, diatomaceous earth in the seed bag is not only a nutrient material, but also a carrier for absorbing and storing water, and a thermal insulation and cooling material for seeds. It is the main raw material of the seed bag. By adjusting the formula ratio, the best seed bag can be obtained.

[0171] (2) The seed stick shell component also includes 10-35 parts of plant powder. The plant powder is soft, flexible, loose, breathable, non-toxic, tasteless, and belongs to natural biomass materials. Plant powder is easy to absorb moisture and store water. Plant powder absorbs water and swells to directly become fertilizer for seedlings. The use of plant powder is, on the one hand, a comprehensive utilization of crop waste straw and natural biomass materials, and on the other hand, it does not damage natural resources. The raw materials are easy to obtain, and plants and crops grow year after year, which is inexhaustible. Plant powder is a carrier of water and can be converted into nutrients. It also reduces the weight of the seed bag.

[0172] (3) In the seed stick outer shell component, there are also 10 - 20 parts of adhesives. The adhesives are the binding materials for other dry materials in the component and also the forming agents. In the present invention, water-soluble polymers polyvinyl alcohol and polyethylene oxide are selected as the main raw materials to prepare a room-temperature quick-drying adhesive. This adhesive belongs to a hygroscopic liquid-solid reversible adhesive (or rewettable adhesive). This adhesive is hygroscopic in the atmosphere. After absorbing moisture, the seed package becomes soft and fluffy. When the water absorption reaches saturation, the seed package can automatically disintegrate into particulate matter to supply nutrients and water-retaining agents for the saplings. Therefore, the adhesives in the present invention are ultimately comprehensively utilized. Polyvinyl alcohol and polyethylene oxide have antibacterial, drought-resistant, and water-retaining effects on the root hairs of the saplings at the roots of the saplings. This is also an inherent property of polyvinyl alcohol and polyethylene oxide and can be directly comprehensively utilized.

[0173] (4) In the seed stick outer shell component, there are also 3 - 10 parts of superabsorbent resin foam pellets. Its function is to reduce the specific gravity of the seed package, improve the water storage, water retention, and water supply functions of the seed package. Because for the seed package, the lighter the weight, the less energy consumed by aerial seeding and the lower the aerial seeding cost. Therefore, by reasonably adjusting the dosage of the superabsorbent resin foam pellets, the optimal weight of the seed package can be obtained and the water storage capacity of the seed package can be further increased.

[0174] (5) In the seed stick outer shell component, there are also 2 - 8 parts of vulcanized rubber pellets. Its main function is to increase the elasticity of the seed package, reduce the impact strength between the seed package and the sand surface on the ground when the seed package lands, increase the elasticity of the freely falling seed package, and reduce the breakage rate of the seed package after aerial seeding. Ensure integrity. Vulcanized rubber is light in weight, porous, has heat insulation properties, and also has buffering properties. It can also store water. During the day, it can insulate heat and does not absorb heat under sunlight and high temperature. Thus, it further improves the water storage and heat insulation properties of the seed package.

[0175] (6) In the seed stick outer shell component, there are also 2 - 6 parts of superabsorbent resin. Its function is to absorb water, store water, continuously supply water to the seeds, and can play a role for a long time.

[0176] (7) In the seed stick outer shell component, there are also 1 - 3 parts of ammonium bicarbonate. It can play a role in fluffing the seed package, that is, it has the function of a fluffing agent and a foaming effect. After forming, the seed package has air permeability and water permeability inside its volume, is not hard, and has micropores on the surface, which is beneficial to the water absorption of the seed package. In addition, ammonium bicarbonate also plays the role of a chemical fertilizer in the component. Because ammonium bicarbonate is a carbonate containing 17.7% nitrogen, after adding it, it has both the function of a fluffing agent and the function of a chemical fertilizer. It can promote the growth of saplings. Finally, it decomposes into nitrogen, carbon dioxide, and water without any harmful intermediate substances.

[0177] (8) The seed rod outer shell component also includes 5 - 15 parts of bentonite (clay). Its functional role is to utilize the gel state formed after bentonite absorbs water, increasing the non - disintegration property of the seed package after water absorption, still being able to exist in the form of a "package". After bentonite absorbs water, it has high viscosity and the ability to adsorb water. Its volume increases after water absorption and forms a gel state, capable of absorbing 4 - 5 times its own weight of water, and the volume expansion rate is 15 times that of the dry state. It can further enhance the water retention and water storage capacity of the seed package, reducing water loss and evaporation.

[0178] (9) The seed rod outer shell component also includes 3 - 10 parts of polyacrylamide aqueous solution. Its main function is to absorb and retain water, having strong water absorption when dry. By adjusting the appropriate dosage of polyacrylamide, better water absorption and water storage performance of the seed package can be obtained.

[0179] (10) The surface of the seed package of the present invention is coated with a specific coating. It can play a role in packaging and protecting the seed package, improving the mechanical impact resistance of the seed package. Moreover, after polyvinyl alcohol forms a film, it has good mechanical properties, the film is tear - resistant, impact - resistant and hygroscopic, can absorb moisture from the atmosphere, and quickly dissolves in water when encountering water, increasing the water absorption performance of the seed package. Therefore, this coating can further improve the impact strength of the seed package, reduce the fragmentation rate when aerial seeding lands, and ensure the integrity of the seed package after aerial seeding.

[0180] (11) Before the seed package of the present invention is loaded into the aerial seeding bag, first, the nylon ropes of N seed packages are tied together in series or parallel to form an indivisible group. Its role is to enable the N seed packages after aerial seeding to form or grow into a dense small forest group, where the trees in the small forest group grow with roots connected. The moisture around the roots can be shared, and it also has the functions of fixing sand, keeping warm and retaining water. The dense forest also has the ability to resist storms, which helps the survival rate of the trees, thus improving the speed of desert greening.

[0181] (12) The aerial seeding bag adopted in the present invention is a rapidly degradable polyvinyl alcohol packaging film. The surface layer of the film is a water - soluble film of a slowly dissolving polyurethane resin layer, with slow moisture absorption on the surface layer and slow hydrolysis when encountering water, while the base film is completely water - soluble. After the aerial seeding bag lands during aerial seeding, it naturally bursts, releasing the seed package. When encountering rainy weather, the aerial seeding bag naturally hydrolyzes into water - soluble substances, eliminating "white pollution".

[0182] To further understand the present invention, the following describes the preferred implementation scheme of the present invention in combination with embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0183] Example 1

[0184] 1. Seed rod:

[0185] 1.1 Preparation raw materials:

[0186] Including: seeds, polyethylene oxide (weight-average molecular weight 100,000), and water. Among them, the mass ratio of seeds to polyethylene oxide is 70∶4.

[0187] 1.2 Preparation method:

[0188] S1. Mix polyethylene oxide with water (water temperature 25°C) at a stirring speed of 120 r / min until all the organic matter is dissolved in water, and dissolve it at room temperature to make a viscous polyethylene oxide aqueous solution. The viscosity of the solid content of the aqueous solution is qualified if the filament drawn by a glass rod is more than 1 m without breaking.

[0189] Mix the tree seeds into the above aqueous solution and mix evenly at a low speed of 30 r / min to obtain a mixture.

[0190] S2. Pour the mixture obtained in step S1 into a square long model groove to make a long seed belt; after natural drying, demold it, and knead the seed belt into a round seed rod. The diameter is slightly less than but close to 10 mm. After all are dried, cut the seed rod into a length of 40 mm.

[0191] Before use, first seal and store it in a PP film (thickness 40 mm) packaging bag, and the capacity of each packaging bag is 10 kg.

[0192] 2. Seed rod shell:

[0193] 2.1 Preparation raw materials:

[0194]

[0195]

[0196] Among them:

[0197] The diatom content of diatomaceous earth is 90%, the pore size is greater than 90%, and the water absorption rate is 3 times its own weight.

[0198] The plant powder is crop straw powder, specifically a mixture of wheat straw powder and soybean straw powder; among them, wheat straw powder is 60% and soybean straw powder is 40%.

[0199] The binder is a polyvinyl alcohol aqueous solution-based binder, specifically a mixture of a polyvinyl alcohol aqueous solution (solid content 20%; the polyvinyl alcohol therein has a molecular weight of 220,000 and a degree of alcoholysis of 89%), salicylanilide, a phosphoric acid aqueous solution (solid content 10%), and water. Among them, the mass ratio of the polyvinyl alcohol aqueous solution, salicylanilide, and the phosphoric acid aqueous solution is preferably 83:2:15, and the amount of water is such that the solid content of the overall polyvinyl alcohol aqueous solution-based binder reaches 30%. The preparation process is as follows: Place the polyvinyl alcohol aqueous solution, salicylanilide, the phosphoric acid aqueous solution, and an appropriate amount of water in a mixer and mix at a speed of 60 r / min for 8 min at room temperature to obtain a binder with a solid content of 30%.

[0200] The vulcanized rubber particles are soft microporous vulcanized rubber with a pore diameter of 0.6 μm and a density of 0.07 g / cm 3 。

[0201] The superabsorbent resin foam pellets are open-cell rigid polyurethane foam pellets with a density of 13 kg / m 3 , and the water absorption rate is 85% of water absorption within 1 min.

[0202] The superabsorbent resin is a mixture of polyacrylic acid (molecular weight 30,000, solid content 30%, pH = 2.0, viscosity at 25 °C is 4.5 Pa·s) and potassium metabisulfite; among them, the mass proportion of polyacrylic acid in the mixture is 99.9%. It is introduced into the system in the form of a superabsorbent resin aqueous solution. The preparation of the superabsorbent resin aqueous solution is as follows: Place the superabsorbent resin and water in a mixer to make an aqueous solution with a solid content of 50%.

[0203] The density of bentonite is 2.4 g / cm 3 , the water absorption rate is 4 times its own weight, and the volume expansion rate is 15 times.

[0204] The solid content of the polyacrylamide aqueous solution is 10%, and the weight-average molecular weight of the polyacrylamide therein is 100,000.

[0205] 2.2 Preparation method:

[0206] K1a. Place diatomite, plant powder, vulcanized rubber particles, superabsorbent resin foam pellets, ammonium bicarbonate, and bentonite in a mixer in this order and mix at a speed of 30 r / min for 10 min at room temperature to obtain an initial mixture.

[0207] K1b. Sequentially add the binder, the aqueous solution of the superabsorbent resin, and the polyacrylamide aqueous solution to the above initial mixture, mix at a speed of 30 r / min for 15 min, and then add an appropriate amount of water to make a viscous slurry with a solid content of 55%, which is the seed rod shell slurry.

[0208] K2. Model Preparation: A round tube (thick tube) with an outer diameter of 71.5 mm, a length of 500 mm, and a wall thickness of 1.5 mm is made of polyvinyl chloride; another round tube (thin tube) with an outer diameter of 10 mm, a wall thickness of 1.5 mm, and a length of 500 mm is also made of polyvinyl chloride. The thick tube and the thin tube are sleeved together and inserted on the chassis to obtain the shell model of the seed stick.

[0209] The shell slurry of the seed stick is injected into the model. After vibrating with a mortar vibrator, it is naturally dried to semi-dry and then demolded. The outer shell mold and the central hole tube are removed, and then it is dried until the moisture content is less than 8% to obtain the blank shell of the seed stick (which is a cylindrical bar with a through hole in the center, 500 mm in length, and the aperture of the central through hole is slightly larger than 10 mm). The above blank is cut into cylinders with a length of 60 mm to obtain the shell of the seed stick.

[0210] 3. Seed Package:

[0211] H1. Drill a small hole in the shell wall of the seed stick shell, thread a nylon cord (1.5 m in length), and then insert the seed stick into the central through hole of the seed stick shell, inserting it tightly to obtain the initial seed package;

[0212] H2. Spray an organic solution on the surface of the initial seed package in a suspended manner, dry to form a film, and form a surface coating to obtain the seed package. The dry thickness of the surface coating is 120 μm, and the coating thickness at both ends of the seed stick is 130 μm.

[0213] Among them, the organic solution is a mixed solution of polyvinyl alcohol + glycerol + water. Among them, the mass ratio of polyvinyl alcohol to glycerol is 75:25, and the solid content of the mixed solution is 30%.

[0214] 4. Aerial Seeding Bag:

[0215] The aerial seeding bag is made of "a kind of rapidly degradable polyvinyl alcohol packaging film" (source seen in the previous text), with a film thickness of 40 μm, a weight average molecular weight of 10,000, a degree of alcoholysis of 89%, and a single bag bulk density of 5 kg.

[0216] 5. Aerial Seeding Bag for Desert Tree Planting:

[0217] Tie the ends of the nylon cords of N seed packages together, and the seed packages are connected in parallel to form a combined body of seed packages. The weight is 5 kg / combined body of seed packages.

[0218] Randomly load the above combined body of seed packages into the aerial seeding bag. Two aerial seeding bags are sleeved together for use, and they are sealed without excluding air to obtain the aerial seeding bag for desert tree planting.

[0219] Example 2

[0220] 1. Seed Stick:

[0221] 1.1 Preparation raw materials:

[0222] It includes: seeds, polyacrylic acid (weight-average molecular weight 10,000), and water. Among them, the mass ratio of seeds to polyacrylic acid is 70:5.

[0223] 1.2 Preparation method:

[0224] S1. Mix polyacrylic acid with water (water temperature 25°C), and the mixing speed is 60 r / min until all the organic matter is water-soluble, and a viscous aqueous solution is prepared at room temperature. The viscosity of the solid content of the aqueous solution is qualified if the wire drawn by a glass rod is more than 1 m without breaking.

[0225] Mix the grass seeds into the above aqueous solution and mix evenly at a low speed of 30 r / min to obtain a mixture.

[0226] S2. Pour the mixture obtained in step S1 into a square long model groove to make a long seed belt; demold after natural drying, and knead the seed belt into a round seed rod. The diameter is slightly less than but close to 10 mm. After all are dried, cut the seed rod into a length of 40 mm.

[0227] Before use, first seal and store it in a PP film (thickness 40 mm) packaging bag, and the capacity of each packaging bag is 5 kg.

[0228] 2. Seed rod shell:

[0229] 2.1 Preparation raw materials:

[0230]

[0231] Among them:

[0232] The diatom content of diatomite is 90%, the pores are more than 90%, and the water absorption rate is 3 times its own weight.

[0233] The plant powder is crop straw powder, specifically a mixture of rice straw powder and corn straw powder; among them, the rice straw powder and corn straw powder each account for 50%.

[0234] The binder is a polyvinyl alcohol aqueous solution-based binder, specifically a mixture of a polyvinyl alcohol aqueous solution (solid content 20%; the polyvinyl alcohol in it has a weight-average molecular weight of 180,000 and a degree of alcoholysis of 87%), salicylanilide, a phosphoric acid aqueous solution (solid content 10%), and water. Among them, the mass ratio of the polyvinyl alcohol aqueous solution, salicylanilide to the phosphoric acid aqueous solution is preferably 83:2:15, and the amount of water used is such that the solid content of the overall polyvinyl alcohol aqueous solution-based binder reaches 35%. The preparation process is as follows: Place the polyvinyl alcohol aqueous solution, salicylanilide, phosphoric acid aqueous solution, and an appropriate amount of water in a mixer and mix at a speed of 80 r / min at room temperature for 6 min to obtain a binder with a solid content of 35%.

[0235] The vulcanized rubber particles are soft microporous vulcanized rubber with a pore diameter of 0.6 μm and a density of 0.08 g / cm 3 .

[0236] The superabsorbent resin foam pellets are open-cell rigid polyurethane foam pellets with a density of 14 kg / m 3 , and the water absorption rate is 85% of the water absorption within 1 minute.

[0237] The superabsorbent resin is a mixture of polyacrylic acid (weight-average molecular weight 25,000, solid content 30%, pH = 2.0, viscosity at 25 °C is 4.0 Pa·s) and polyethylene glycol (molecular weight 400); among them, the mass proportion of polyacrylic acid in the mixture is 99.936%. It is introduced into the system in the form of an aqueous solution of the superabsorbent resin. The preparation of the aqueous solution of the superabsorbent resin is as follows: Place the superabsorbent resin and water in a mixer to make an aqueous solution with a solid content of 50%.

[0238] The density of bentonite is 2.5 g / cm 3 , the water absorption rate is 4.2 times its own weight, and the volume expansion rate is 15 times.

[0239] The solid content of the aqueous solution of polyacrylamide is 10%, and the weight-average molecular weight of the polyacrylamide therein is 80,000.

[0240] 2.2 Preparation method:

[0241] K1a. Place diatomite, plant powder, vulcanized rubber particles, superabsorbent resin foam pellets, ammonium bicarbonate and bentonite in a mixer in turn, and mix at a speed of 40 r / min at room temperature for 8 min to obtain an initial mixture.

[0242] K1b. Add an adhesive, an aqueous solution of the superabsorbent resin, and an aqueous solution of polyacrylamide to the above initial mixture in turn, mix at a speed of 40 r / min for 12 min, and then add an appropriate amount of water to make a viscous slurry with a solid content of 60%, that is, the seed stick shell slurry.

[0243] K2. Model preparation: Make a round tube (thick tube) with an outer diameter of 71.5 mm, a length of 600 mm, and a wall thickness of 1.5 mm from polyvinyl chloride; then make a round tube (thin tube) with an outer diameter of 10 mm, a wall thickness of 1.5 mm, and a length of 600 mm from polyvinyl chloride. Sleeve the thick tube and the thin tube together and insert them on the chassis to obtain the seed stick shell model.

[0244] Inject the seed rod shell slurry into the mold. After vibrating with a mortar vibrator, let it dry naturally until it is semi-dry and then demold. Remove the outer shell mold and the central hole tube, and then dry it until the moisture content is less than 8% to obtain a blank of the seed rod shell (which is a cylindrical rod with a through hole in the center, 600 mm in length, and the aperture of the central through hole is slightly larger than 10 mm). Cut the above blank into cylinders with a length of 60 mm to obtain the seed rod shell.

[0245] 3. Seed packet:

[0246] H1. Drill a small hole in the shell wall of the seed rod shell, thread a nylon cord (1.5 m in length), and then insert the seed rod into the central through hole of the seed rod shell, inserting it tightly to obtain an initial seed packet;

[0247] H2. Spray an organic solution on the surface of the initial seed packet in a suspended manner, dry to form a film, and form a surface coating to obtain the seed packet. The dry thickness of the surface coating is 120 μm, and the coating thickness at both ends of the seed rod is 130 μm.

[0248] Among them, the organic solution is a mixed solution of polyvinyl alcohol + glycerol + water. Among them, the mass ratio of polyvinyl alcohol to glycerol is 75:25, and the solid content of the mixed solution is 30%.

[0249] 4. Aerial seeding bag:

[0250] The aerial seeding bag is the same as in Example 1, with a film thickness of 35 μm, and an aerial seeding bag with a single-bag volume weight of 6 kg is made.

[0251] 5. Aerial seeding bag for desert tree planting:

[0252] Tie the ends of the cords of several seed packets together, and connect the seed packets in parallel to form a first-gradient parallel body. Then, tie another seed packet to the cord of each seed packet in the first-gradient parallel body, that is, connect another seed packet in series to each seed packet to form a seed packet combination. The weight is 6 kg / seed packet combination.

[0253] Randomly load the above seed packet combination into the aerial seeding bag, and use two aerial seeding bags together, sealing without excluding air to obtain the aerial seeding bag for desert tree planting.

[0254] Example 3

[0255] 1. Seed rod:

[0256] 1.1 Preparation raw materials:

[0257] Including: seeds, polyvinyl alcohol (weight average molecular weight 100,000, degree of alcoholysis 89%) and water. Among them, the mass ratio of seeds to polyacrylic acid is 70:8.

[0258] 1.2 Preparation method:

[0259] S1. Mix polyvinyl alcohol with cold water at 23°C and dissolve it. Then heat it up to 95°C and mix for 10 minutes to make a viscous aqueous solution. The viscosity of the solid content of the aqueous solution is qualified if the filaments can be drawn continuously for more than 1 m when picked up with a glass rod.

[0260] Mix tree species into the above aqueous solution and mix evenly at a low speed of 30 r / min to obtain a mixture.

[0261] S2. Pour the mixture obtained in step S1 into a square long model groove to make a long seed tape; demold after natural drying, and knead the seed tape into a round seed rod. The diameter is slightly less than but close to 10 mm. After all are dried, cut the seed rod into pieces with a length of 40 mm.

[0262] Before use, first seal and store it in a PP film (thickness 40 mm) packaging bag, and the capacity of each packaging bag is 10 kg.

[0263] 2. Seed rod shell:

[0264] 2.1 Preparation raw materials:

[0265]

[0266] Among them:

[0267] The diatom content of diatomaceous earth is 90%, the pore size is greater than 90%, and the water absorption rate is 3 times its own weight.

[0268] The plant powder is a mixture of tree branches, leaves and corn straw powder, and the ratio of the three is 1:1:1.

[0269] The binder is a polyvinyl alcohol aqueous solution-based binder, specifically a mixture of a polyvinyl alcohol aqueous solution (solid content 20%; the weight-average molecular weight of polyvinyl alcohol in it is 220,000, and the degree of alcoholysis is 89%), salicylanilide, phosphoric acid aqueous solution (solid content 10%) and water. Among them, the mass ratio of the polyvinyl alcohol aqueous solution, salicylanilide and phosphoric acid aqueous solution is preferably 83:2:15, and the amount of water used is such that the solid content of the overall polyvinyl alcohol aqueous solution-based binder reaches 40%. The preparation process is as follows: Put the polyvinyl alcohol aqueous solution, salicylanilide, phosphoric acid aqueous solution and appropriate amount of water into a mixer and mix at a speed of 90 r / min at room temperature for 6 minutes to obtain a binder with a solid content of 40%.

[0270] The vulcanized rubber particles are soft microporous vulcanized rubber with a pore size of 0.6 μm and a density of 0.09 g / cm 3 .

[0271] The superabsorbent resin foam pellets are open-cell rigid polyurethane foam pellets with a density of 15 kg / m 3 , and the water absorption rate is 85% of the water absorbed within 1 minute.

[0272] The superabsorbent resin is a mixture of polyacrylic acid (weight-average molecular weight 20,000, solid content 30%, pH = 2.0, viscosity at 25°C is 3.0 Pa·s) and potassium metabisulfite; among them, the mass proportion of polyacrylic acid in the mixture is 99.6%. It is introduced into the system in the form of an aqueous solution of the superabsorbent resin. The preparation of the aqueous solution of the superabsorbent resin is as follows: Place the superabsorbent resin and water in a mixer to make an aqueous solution with a solid content of 50%.

[0273] The density of bentonite is 2.6 g / cm 3 , the water absorption rate is 4.5 times its own weight, and the volume expansion rate is 15 times.

[0274] The solid content of the aqueous solution of polyacrylamide is 10%, and the weight-average molecular weight of the polyacrylamide therein is 100,000.

[0275] 2.2 Preparation method:

[0276] K1a. Place diatomite, plant powder, vulcanized rubber particles, superabsorbent resin foam pellets, ammonium bicarbonate, and bentonite in a mixer in turn, and mix at a speed of 50 r / min at room temperature for 8 min to obtain an initial mixture.

[0277] K1b. Add an adhesive, an aqueous solution of the superabsorbent resin, and an aqueous solution of polyacrylamide to the above initial mixture in turn, mix at a speed of 50 r / min for 13 min, and then add an appropriate amount of water to make a viscous slurry with a solid content of 65%, that is, the shell slurry of the seed stick.

[0278] K2. Model preparation: Use polyvinyl chloride to make a round tube (thick tube) with an outer diameter of 71.5 mm, a length of 800 mm, and a wall thickness of 1.5 mm; then use polyvinyl chloride to make a round tube (thin tube) with an outer diameter of 10 mm, a wall thickness of 1.5 mm, and a length of 800 mm. Sleeve the thick tube and the thin tube together and insert them on the chassis to obtain the shell model of the seed stick.

[0279] Inject the shell slurry of the seed stick into the model. After vibrating with a mortar vibrator, let it dry naturally until it is semi-dry and then demold. Remove the outer shell mold and the central hole tube, and then dry it until the moisture content is less than 5% to obtain a blank shell of the seed stick (which is a cylindrical rod with a through hole in the center, 800 mm in length, and the aperture of the central through hole is slightly larger than 10 mm). Cut the above blank into cylinders with a length of 60 mm to obtain the shell of the seed stick.

[0280] 3. Seed package:

[0281] H1. Drill a small hole in the shell wall of the seed stick shell, thread a nylon cord (1.5 m in length), and then insert the seed stick into the central through hole of the seed stick shell, insert it tightly and firmly to obtain an initial seed package;

[0282] H2. Spray an organic solution on the surface of the initial seed packet in a suspended manner, dry to form a film, and form a surface coating to obtain the seed packet. The dry thickness of the surface coating is 120 μm, and the coating thickness at both ends of the seed rod is 140 μm.

[0283] Among them, the organic solution is a mixed solution of polyvinyl alcohol + glycerol + water. Among them, the mass ratio of polyvinyl alcohol to glycerol is 75:25, and the solid content of the mixed solution is 30%.

[0284] 4. Aerial seeding bag:

[0285] The aerial seeding bag is the same as in Example 1, and an aerial seeding bag with a single-bag volume weight of 7 kg is made.

[0286] 5. Aerial seeding bag for desert tree planting:

[0287] Tie the rope ends of the strings of several seed packets together, connect the seed packets in parallel to form a first-gradient parallel body, and then tie another seed packet to the string of each seed packet in the first-gradient parallel body, that is, connect another seed packet in series to each seed packet to form a seed packet combination. The weight is 7 kg / seed packet combination.

[0288] Randomly load the above seed packet combination into the aerial seeding bag, use two aerial seeding bags together, and seal without excluding air to obtain the aerial seeding bag for desert tree planting.

[0289] Example 4

[0290] 1. Seed rod:

[0291] 1.1 Preparation raw materials:

[0292] Including: seeds, polyacrylamide (weight-average molecular weight of 100,000), and water. Among them, the mass ratio of seeds to polyacrylamide is 70:8.

[0293] 1.2 Preparation method:

[0294] S1. Mix polyacrylamide with water (water temperature 25°C), and the mixing speed is 90 r / min until all the organic matter is dissolved in water, and dissolve it into a viscous aqueous solution at room temperature. The viscosity of the solid content of the aqueous solution is qualified if the wire drawn by a glass rod is more than 1 m without breaking.

[0295] Mix the grass seeds into the above aqueous solution and mix evenly at a low speed of 30 r / min to obtain a mixture.

[0296] S2. Pour the mixture obtained in step S1 into a square long model groove to make a long seed belt; demold after natural drying, and knead the seed belt into a round seed rod. The diameter is slightly less than but close to 10 mm. After all are dried, cut the seed rod into a length of 40 mm.

[0297] Before use, store it in a sealed package with a PP film (thickness 40 mm) packaging bag, and the capacity of each packaging bag is 10 kg.

[0298] 2. Seed rod shell:

[0299] 2.1 Preparation raw materials:

[0300]

[0301] Among them:

[0302] The diatom content of diatomaceous earth is 90%, the pores are more than 90%, and the water absorption rate is 3 times its own weight.

[0303] The plant powder is a mixed powder of crop straw powder (specifically wheat straw powder and rice straw powder, and the mass ratio of the two is 1:1), bark powder, and leaf powder. Among them, the mass ratio of crop straw powder∶bark powder∶leaf powder = 1∶3∶2.

[0304] The binder is a polyvinyl alcohol aqueous solution-based binder, specifically a mixture of a polyvinyl alcohol aqueous solution (solid content 20%; the weight-average molecular weight of polyvinyl alcohol in it is 200,000, and the degree of alcoholysis is 88%), salicylanilide, a phosphoric acid aqueous solution (solid content 10%), and water. Among them, the mass ratio of the polyvinyl alcohol aqueous solution, salicylanilide, and the phosphoric acid aqueous solution is preferably 83∶2∶15, and the amount of water is such that the solid content of the overall polyvinyl alcohol aqueous solution-based binder reaches 40%. The preparation process is as follows: Place the polyvinyl alcohol aqueous solution, salicylanilide, the phosphoric acid aqueous solution, and an appropriate amount of water in a mixer, and mix at a speed of 60 r / min at room temperature for 8 min to obtain the binder with a solid content of 40%.

[0305] The vulcanized rubber particles are soft microporous vulcanized rubber with a pore diameter of 0.5 μm and a density of 0.2 g / cm 3 .

[0306] The superabsorbent resin foam pellets are rigid urea formaldehyde foam pellets with a density of 13 kg / m 3 , and the water absorption rate is 85% of the water absorption within 1 min.

[0307] The superabsorbent resin is a mixture of polyacrylic acid (molecular weight 30,000, solid content 30%, pH = 2.0, viscosity at 25 °C is 4.5 Pa·s) and potassium metabisulfite; among them, the mass proportion of polyacrylic acid in the mixture is 99.9%. It is introduced into the system in the form of a superabsorbent resin aqueous solution. The preparation of the superabsorbent resin aqueous solution is as follows: Place the superabsorbent resin and water in a mixer to make an aqueous solution with a solid content of 50%.

[0308] The density of bentonite is 2.8 g / cm 3, the water absorption rate is 5 times its own weight, and the volume expansion rate is 15 times.

[0309] The solid content of the polyacrylamide aqueous solution is 10%, and the weight-average molecular weight of the polyacrylamide therein is 80,000.

[0310] 2.2 Preparation method:

[0311] K1a. Place diatomite, plant powder, vulcanized rubber particles, superabsorbent resin foam pellets, ammonium bicarbonate, and bentonite in a mixer in sequence, and mix at a speed of 40 r / min for 10 min at room temperature to obtain an initial mixture.

[0312] K1b. Add an adhesive, an aqueous solution of superabsorbent resin, and a polyacrylamide aqueous solution to the above initial mixture in sequence, mix at a speed of 60 r / min for 10 min, and then add an appropriate amount of water to make a viscous slurry with a solid content of 60%, that is, the seed stick outer shell slurry.

[0313] K2. Model preparation: Make a round tube (thick tube) with an outer diameter of 71.5 mm, a length of 800 mm, and a wall thickness of 1.5 mm from polyvinyl chloride; then make a round tube (thin tube) with an outer diameter of 10 mm, a wall thickness of 1.5 mm, and a length of 800 mm from polyvinyl chloride. Sleeve the thick tube and the thin tube together and insert them on the chassis to obtain the seed stick outer shell model.

[0314] Inject the seed stick outer shell slurry into the model. After vibrating with a mortar vibrator, air-dry it naturally until it is semi-dry and then demold it. Remove the outer shell mold and the central hole tube, and then air-dry it until the moisture content is less than 5% to obtain a seed stick outer shell blank (which is a cylindrical rod with a through hole in the center, 800 mm in length, and the aperture of the central through hole is slightly larger than 10 mm). Cut the above blank into cylinders with a length of 60 mm to obtain the seed stick outer shell.

[0315] 3. Seed package:

[0316] H1. Drill a small hole in the shell wall of the seed stick outer shell, thread a nylon cord (1.5 m in length), and then insert the seed stick into the central through hole of the seed stick outer shell, insert it tightly and firmly to obtain an initial seed package;

[0317] H2. Spray an organic solution on the surface of the initial seed package in a hanging manner, dry it to form a film to form a surface coating to obtain the seed package. The dry thickness of the surface coating is 120 μm, and the coating thickness at both ends of the seed stick is 150 μm.

[0318] Among them, the organic solution is a mixed solution of polyvinyl alcohol + glycerol + water, and the mass ratio of polyvinyl alcohol to glycerol is 75:25, and the solid content of the mixed solution is 30%.

[0319] 4. Aerial seeding bag:

[0320] The aerial seeding bag is the same as that in Example 1, and an aerial seeding bag with a single-bag bulk density of 8 kg is made.

[0321] 5. Aerial seeding bag for desert tree planting:

[0322] Tie the rope ends of the strings of several seed packets together, connect the seed packets in parallel to form a first-gradient parallel body. Then, tie another seed packet to the string of each seed packet in the first-gradient parallel body, that is, connect another seed packet in series to each seed packet to form a seed packet combination. The weight is 8 kg / seed packet combination.

[0323] Randomly load the above seed packet combination into the aerial seeding bag, use two aerial seeding bags together, and seal without excluding air to obtain an aerial seeding bag for desert tree planting.

[0324] Product Performance Test :

[0325] 1. Hygroscopicity test of seed packets in the atmosphere

[0326] Take 10 seed packets from Examples 1 to 4 each, weigh them (single-bag weight), and then place them separately on the sand surface of the experimental sand box. The water content of the sand is 30%, the atmospheric relative humidity is 20% - 40%, and the environmental temperature is 10 - 25 °C (day and night). Leave them for 30 days to test the average hygroscopic rate (hygroscopic weight gain %) of the seed packets. The results are shown in Table 1.

[0327] Table 1: Hygroscopicity test results of seed packets in the atmosphere

[0328]

[0329] The test results in Table 1 show that: in the atmosphere, in an environment with a relative humidity of 20% - 40%, the hygroscopic rate of the seed packets is 20% - 30% in 30 days, showing excellent hygroscopicity. Among them, the hygroscopicity of Example 4 is the best.

[0330] 2. Water absorption test of seed packets

[0331] Take 10 seed packets from Examples 1 to 4 each, put them into nylon mesh bags with a mesh density of 5 meshes, immerse them in a water container with a water temperature of 20 °C, take them out after the seed packets absorb water and expand and become soft to the saturated state, record the water absorption time, that is, the time required to reach saturation (min), and the test results are shown in Table 2.

[0332] Table 2: Water absorption test results of seed packets

[0333]

[0334] Table 2 The test results show that: the seed packets of the present invention have rapid water absorption and expansibility after encountering water, and can reach water absorption saturation within 15 minutes. Among them, the water absorption saturation speed of Example 2 is the fastest.

[0335] 3. Water retention performance test of the seed packet

[0336] Compare the water retention performance of the seed packet with that of clay and sand.

[0337] (1) After the seed packets of Examples 1 to 4 are saturated with water and weighed (saturated with water according to the above-mentioned test item 2), they are buried in a sandbox with a water content of 30% to a depth of 100 mm, and exposed to the sun outdoors for 30 days. The outdoor temperature is 10 - 25°C day and night, the sunlight exposure time is greater than 8 hours, the highest temperature on the sand surface is 40 - 50°C, and there is no rain. Test the evaporation water loss rate (weight percentage) of the seed packet in the sand for 30 days. The results are shown in Table 3.

[0338] (2) According to the same method and conditions as above, test the evaporation water loss rate of clay (ordinary black soil) in the sand for 30 days after being saturated with water. The results are shown in Table 3.

[0339] (3) Take 1000 g of dry sand and put it in a container, inject 1000 g of water, bury the sand and the container in the sand with a water content of 20% to a depth of 100 mm, and expose it to the sun outdoors for 20 days. Test the evaporation water loss rate of the sand for 20 days. The test conditions are the same as those of the seed packet. The results are shown in Table 3.

[0340] Table 3: Comparison of water retention performance of the seed packet, clay, and sand

[0341]

[0342] The test results in Table 3 show that: after 30 days of exposure to the sun, the water loss rate of clay (saturated with water) is 85%, and the water content in the soil is only 15% left; after 30 days of exposure to the sun, the water loss rate of sand (sand: water = 1:1) is 94%, and almost only 6% of the water remains in the sand; while the seed packet of the present invention has a water loss rate of only 35% - 50% under the same environment. It is proved that the seed packet of the present invention has excellent water storage and water retention performance, and the evaporation speed is slower in high-temperature weather. Compared with ordinary clay and sand, the water storage and water retention performance is significantly improved.

[0343] 4. Heat insulation and heat preservation performance test of the seed packet

[0344] Prepare the seed packets according to the raw materials and methods of Examples 1-4, except that the wall thickness of the outer shell of the seed rod is controlled to be 30 mm, the central hole of the outer shell of the seed rod is filled with loose granular seeds (temperature 20 °C), and then the empty sections at both ends are tightly blocked with foam. Then, spray a surface coating with a thickness of 120 μm according to the method of the example. Place it on the sandy surface outdoors at a temperature of 30-35 °C and expose it to the sun for 5 h, and measure the temperature of the sandy surface, the temperature of the seeds in the seed packet, and the temperature of the outer layer of the seed packet. Sprinkle the same seeds on the sandy surface and expose them to the sun at 30-35 °C for 5 h, and measure the temperature of the seeds. The results are shown in Table 4.

[0345] Table 4: Test results of the heat insulation performance of the seed packet

[0346]

[0347] The test results in Table 4 show that the seed packet of the present invention has excellent heat insulation function. After aerial seeding, the seed packet falls on the sandy surface. Since the seeds are wrapped in the seed packet, they will not be baked by the high temperature of the sandy surface. In case of windy weather, the seed packet is buried in the sand by the flowing sand, and it can absorb water and quickly take root and germinate, improving the survival rate of the tree species sown aerially in the desert, thereby reducing the number of aerial seeding times and the aerial seeding cost.

[0348] For the aerial seeding of desert tree planting of the present invention, it is naturally dried at normal temperature during the manufacturing process. Water is used as the solvent, and the product is non-toxic and pollution-free. There is no waste water or waste gas emission during the production process. It has no pollution to the atmosphere. It belongs to a production process with low energy consumption and low carbon emissions. The aerial seeding bag for desert tree planting of the present invention is suitable for aerial seeding of tree species in vast desert areas where artificial tree planting is impossible. It can form clusters of small tree groups under the restraint of the nylon rope of the seed packet. The nylon rope can be made of biodegradable nylon rope, which is pollution-free.

[0349] Specific examples are used in this article to elaborate on the principle and implementation method of the present invention. The description of the above examples is only used to help understand the method of the present invention and its core idea, including the best mode, and also enables any person skilled in the art to practice the present invention, including manufacturing and using any device or system, and implementing any combined method. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention. The protection scope of the present invention patent is defined by the claims and may include other embodiments that can be conceived by those skilled in the art. If these other embodiments have structural elements similar to the literal description of the claims, or if they include equivalent structural elements that have no substantial difference from the literal description of the claims, then these other embodiments should also be included within the scope of the claims.

Claims

1. A desert tree planting aerial seeding bag, characterized in that: include: An aerial seeding bag and a seed bag assembly contained in the aerial seeding bag; in, The seed bag assembly comprises a plurality of seed bags connected together; The seed package comprises: a seed stick and a seed stick shell wrapped around the seed stick; in, The raw materials for preparing the seed sticks include: seeds, organic matter and water; wherein the mass ratio of the seeds to the organic matter is 70:(4-20); The raw materials for preparing the seed stick shell include:

2. The desert tree planting aerial seeding bag according to claim 1, characterized in that: In the raw material for preparing the seed stick, the organic matter is the first organic matter or the second organic matter; in, The first organic substance is at least one of polyethylene oxide, polyacrylic acid, polyvinyl alcohol, polyacrylamide and hydroxypropyl cellulose; The second organic matter is starch dextrin; The mass ratio of the seeds to the first organic matter is 70:(4-8); The mass ratio of the seeds to the second organic matter is 70:

20.

3. The desert tree planting aerial seeding bag according to claim 1, characterized in that: The adhesive is a polyethylene oxide aqueous solution-based adhesive and / or a polyvinyl alcohol aqueous solution-based adhesive; in, The polyethylene oxide aqueous solution-based adhesive is a mixture of polyethylene oxide aqueous solution, linear phenolic resin varnish and water; The polyvinyl alcohol aqueous solution-based adhesive is a mixture of polyvinyl alcohol aqueous solution, aniline salicylate, phosphoric acid aqueous solution and water; The solid content of the adhesive is 30% to 40%; The vulcanized rubber particles are lightweight microporous vulcanized rubber, and the specifications are preferably: pore diameter 0.5-0.7 μm, density 0.07-0.2 g / cm 3 ; The super absorbent resin foam granules are open-cell rigid polyurethane foam granules and / or rigid urea-formaldehyde foam granules; the foam density of the super absorbent resin foam granules is 13-15 kg / m 3 , the water absorption rate is 85% within 1 minute; The highly water-absorbent resin is a mixture of polyacrylic acid and polyethylene glycol, or a mixture of polyacrylic acid and potassium pyrosulfite.

4. The desert tree planting aerial seeding bag according to claim 1, characterized in that: The specifications of the diatomaceous earth are: porosity>90%, water absorption rate is 3 to 4 times of its own weight; The plant powder is preferably at least one of crop straw powder, tree powder and dried fruit shell powder; The density of the bentonite is 2.4-2.8 g / cm 3 , water absorption rate is 4 to 5 times of its own weight, and volume expansion rate is 15 times; The solid content of the polyacrylamide aqueous solution is 5% to 10%, and the weight average molecular weight of the polyacrylamide is 50,000 to 100,000.

5. The desert tree planting aerial seeding bag according to claim 1, characterized in that: The seed sticks are prepared by the following preparation method: S1, mixing organic matter, water and seeds to obtain a mixture; S2, shaping the mixed material to obtain seed sticks; The seed stick shell is prepared by the following preparation method: K1, diatomaceous earth, plant powder, vulcanized rubber particles, super absorbent resin foam particles, ammonium bicarbonate, bentonite, a binder, an aqueous solution of super absorbent resin, an aqueous solution of polyacrylamide and water are mixed to obtain a slurry; K2. Molding the slurry to obtain a seed rod shell; the seed rod shell is a cylindrical rod with a through hole in the center.

6. The desert tree planting aerial seeding bag according to claim 5, characterized in that: In step S2, the molding method includes: pouring the mixture obtained in step S1 into a mold tank to form a long seed strip; demolding after drying, and then forming a cylindrical rod; Step K1 specifically includes: K1a: diatomaceous earth, plant powder, vulcanized rubber particles, super absorbent resin foam particles, ammonium bicarbonate and bentonite are mixed to obtain an initial mixture; K1b: The initial mixture is mixed with a binder, an aqueous solution of a highly absorbent resin, an aqueous solution of polyacrylamide and water to obtain a slurry.

7. The desert tree planting aerial seeding bag according to claim 1, characterized in that: The seed bag is prepared by the following method: H1. Drill a hole on the shell wall of the seed stick, thread a string, and then insert the seed stick into the central through hole of the seed stick shell to obtain an initial seed package; H2, applying an organic solution on the surface of the initial seed package, drying to form a film, forming a surface coating, and obtaining a seed package; The organic solution is a mixed solution of polyvinyl alcohol, glycerol and water.

8. The desert tree planting aerial seeding bag according to claim 1, characterized in that: In the seed package assembly, several seed packages are connected in parallel and / or in series.

9. The desert tree planting aerial seeding bag according to claim 1, characterized in that: The aerial seeding bag is a rapidly degradable polyvinyl alcohol packaging film with a thickness of 25 to 40 μm; The bulk density of each bag of the aerial seeding bag is 5 to 8 kg / bag.

10. The desert tree planting aerial seeding bag according to claim 2, characterized in that: In the first organic matter: The weight average molecular weight of the polyethylene oxide is 50,000 to 100,000; The weight average molecular weight of the polyacrylic acid is 10,000 to 30,000; The weight average molecular weight of the polyvinyl alcohol is 150,000 to 200,000, and the alcoholysis degree is 87% to 89%; The weight average molecular weight of the polyacrylamide is 50,000 to 100,000; The weight average molecular weight of the hydroxypropyl cellulose is 50,000 to 100,000, the MS is 3 to 3.5, and the DS is 2.2 to 2.8.

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