Apocynum venetum pelletized seed coating structure and application thereof

Abstract

The invention discloses an apocynum venetum pelletized seed coating structure and application thereof, belongs to the field of apocynum venetum breeding, and aims to solve the problem that mechanical seeding operation of pelletized apocynum venetum seeds is difficult to realize due to limitation of geographical conditions in high mountain areas such as Xinjiang. The invention relates to an apocynum venetum seed pellet which comprises a paper coated shell, hollow plant straw and a plurality of pelletized apocynum venetum seeds, the paper coated shell is spherical, the pelletized apocynum venetum seeds are located at the inner bottom of the paper coated shell, and the remaining space in the paper coated shell is filled with the hollow plant straw. By adopting the application, a planter can carry out loading in the form of a backpack, and the apocynum venetum pelletized seed coating structure can be put into a to-be-repaired region through the slingshot in the to-be-repaired mountainous area, which cannot be realized by the existing pure pelletized apocynum venetum seeds. In addition, a plurality of apocynum venetum pelletized seed coating structures are manually put into a to-be-repaired region, so that the formation of block-connected apocynum venetum populations is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of apocynum venetum breeding, in particular the field of apocynum venetum seed pelleting breeding, and specifically to an apocynum venetum pelleted seed coating structure and application thereof. More specifically, the present application provides an apocynum venetum pelleted seed coating structure and application thereof, which is particularly suitable for use in mountainous, arid, and extreme climate conditions, and is conducive to solving the problem of apocynum venetum breeding difficulties in mountainous conditions and the like, and has extremely important significance for the establishment of apocynum venetum seed population in small and micro environments. BACKGROUND

[0002] Seed pelleting is a special form of seed coating, which refers to the use of various pelleting materials by a pelleting machine to make light-weight or irregularly shaped seeds have certain strength, shape, and weight. The seeds that have completed pelleting are usually spherical in shape and can no longer be distinguished from the original shape of the seeds. Seed pelleting not only increases the flowability of the seeds to facilitate mechanized seeding, but also protects the seeds and improves their stress resistance. At the same time, by adding various agents such as fungicides, insecticides, herbicides, and bird repellents into the pelleting raw materials, the pelleted seeds are endowed with functions such as sterilization, insect killing, weed control, and bird repelling, thereby enhancing the resistance of the seeds to adverse environments. The insecticides in the pelleting agent can prevent the seeds from being eaten by underground pests, and the outer warning color can significantly reduce the probability of the seeds being eaten by birds; the nutrient elements in the pelleting agent can promote the growth of seedlings, and the growth-regulating substances can improve the survival rate of seedlings under stress. For example, in alpine regions, early seeding may cause the seeds to experience the reverse spring cold and fail to establish, and delayed seeding can avoid freezing damage but will shorten the growth period. By pelleting with special seed coatings, the seed germination time can be shortened, the negative effects of delayed seeding can be compensated, and the problem of seeding in alpine regions can be effectively solved (Reference: MADSEN M D, DAVIES K W, BOYD C S, et al. Emerging seed enhancement technologies for overcoming barriers to restoration[J]. Restoration Ecology, 2016, 24(S2): S77−S84).

[0003] Seed pelleting technology originated in the United States and was later introduced to the United Kingdom, Japan and other countries. In the 1940s, the United States applied pelleting and coating technology to vegetable and flower seeds to improve their sowing performance. With the gradual increase in the demand for precision sowing, the demand for single-pelleted and high-quality seeds expanded the application market for pelleting. In the 1990s, the pelleting rate of Dutch flower seeds reached 100% (Reference: Li Zhenhua. China's small-pelleted seed road [J]. Life World, 2022(5): 6−9). At present, Germains Seed Technology and Incotec are the main leaders in the seed coating field, focusing on the research and development of biodegradable materials to produce seed coating products without microplastics.

[0004] Pelleting technology was introduced to China in 1980 to address the problem of difficult soil entry for pasture reseeding. In the late 1980s, the Jiangsu Tobacco Research Institute, in collaboration with the Nanjing Tobacco Science Institute and other relevant research institutions, began research on tobacco (Nicotiana tabacum L.) seed pelleting. After years of development, tobacco seed pelleting research made a breakthrough, and after several generations of updates, the quality indicators of pelleted seeds, such as single-seed rate, seed rate, and cracking degree, have reached the advanced level of foreign countries, and a complete set of pelleted seed seedling technology has been formed. At the same time, medicinal plant and woody plant seeds for wind and sand prevention have also gradually adopted pelleting technology, including Codonopsis pilosula (Franch.) Nannf, Platycodon grandiflorus (Jacq.) A. DC., Saposhnikovia divaricata (Turz.) Schischlk, Astragalus henryi Oliv., Hedgsarum scoparium Fish. Et Mey, and Caragana spp. On March 22, 2025, the Economic Daily reported that a standardized processing workshop for medicinal seed has been built in Longxi County, Gansu Province. The workshop uses pelleted seed processing technology to achieve the goal of taking seeds with fertilizer to the field; by adding insecticides, fungicides and trace element nutrients during the pelleting process, it can reduce pests and diseases and promote strong seedlings. Fan Wenyang et al. used a self-developed composite pelleting agent to pelletize Saposhnikovia divaricata seeds, and the results showed that the vigor, catalase and peroxidase activities of pelleted seeds were significantly improved, and the germination concentration was 1.39 times that of naked seeds (Reference: Fan Wenyang, Ma Jian, Chen Jin, et al. Effect of composite pelleting agent on Saposhnikovia divaricata seed germination [J]. Journal of Heilongjiang Bayi Agricultural and Reclamation University, 2010, 22(4): 1−3, 7).

[0005] Apocynum venetum L. is a perennial herb of Apocynaceae, also known as Hongma, Hongliuzi, etc. In the production of Apocynum venetum L., Apocynum venetum L. with small leaves is widely called Hongma, and Apocynum venetum L. with large leaves is widely called Baima. Apocynum venetum L. has the characteristics of drought tolerance, low temperature tolerance, high temperature tolerance, salt and alkali tolerance, and poor soil tolerance. The different organs of Apocynum venetum L. can be used as medicine, and the fiber of Apocynum venetum L. is also an ideal natural fiber for textile.

[0006] China is one of the countries with the largest area of Apocynum venetum L. distribution in the world. Xinjiang, Qinghai, Gansu, Inner Mongolia, Liaoning and Jilin are the main areas for planting Apocynum venetum L. Apocynum venetum L. in China is mainly distributed between 35°~45° north latitude. Due to the rich and diverse ecological regions of Apocynum venetum L. in China, there are certain differences in its morphology and ecological adaptability. There are three distribution areas of Apocynum venetum L. in China, namely, the northern Hongma semi-arid distribution area, the coastal and inland Hongma semi-humid and humid distribution area, and the northwest inland Baima and Hongma arid distribution area. The northwest inland Baima and Hongma arid distribution area can be further divided into three sub-distribution areas, namely, the typical arid distribution area of Tarim Basin and Hexi Corridor, the quasi-arid distribution area of Junggar Basin and Yili Valley in northern Xinjiang, and the alpine arid distribution area of Qaidam Basin.

[0007] In Xinjiang, the distribution of Apocynum venetum L. is closely related to the local climate. The main distribution areas of Apocynum venetum L. in Xinjiang include Shaya County Baima production area, Weili County Baima production area, Xingdi Hongma base, Tuobuquan Hongma base, Bachu County Baima production area, Hami Hongma sporadic distribution area, Ebinur Lake Hongma base, Yili Hongma sporadic distribution area and Aletai Hongma base. In order to study and protect the wild Apocynum venetum L. in Xinjiang, Suqian studied the wild Apocynum venetum L. population distributed in Xinjiang. The results showed that the genetic differentiation coefficient (Gst) of Apocynum venetum L. among the seven different sample sites ranged from 0.1045 to 0.7336, with an average Gst of 0.3603. The analysis of the correlation between the genetic diversity of Apocynum venetum L. in Xinjiang and environmental factors showed that the genetic diversity of Apocynum venetum L. had less correlation with annual accumulated temperature and annual mean temperature, but had significant negative correlation with precipitation and altitude. At the same longitude, the genetic diversity of Apocynum venetum L. in high latitude area was higher than that in low latitude area.

[0008] Apocynum venetum L. seeds are small in size, light in weight and easy to be blown away by the wind. The marginal land generally has the problems of lack of water and heat resources, high salinity, poor nutrients and other obstacles, which leads to the difficulty of Apocynum venetum L. seed germination. The seed pelleting technology can provide the necessary nutrients for the germination of Apocynum venetum L. seeds, which is beneficial to solve the problem of Apocynum venetum L. seed germination.

[0009] In the plain area, the Apocynum venetum seed is treated by pelletization, which is beneficial to the mechanized seeding operation, and makes the Apocynum venetum direct seeding easier. However, in the high altitude and mountainous area, the Apocynum venetum seed is easily scattered by the wind due to the influence of the mountain slope and the strong wind, and it is difficult to form the blocky plant community, which is not conducive to the repair of the Apocynum venetum on the slope environment; at the same time, this is also the reason for the low genetic diversity of the Apocynum venetum in the high latitude area. This has become a technical problem that the technical personnel urgently need to solve. SUMMARY

[0010] For the pelletization treatment of the Apocynum venetum seed, the problem that the Apocynum venetum seed is small in particle size and easy to be scattered by the wind is effectively solved, which is beneficial to the mechanized operation in the plain area. At the same time, the pelletized Apocynum venetum seed usually contains nutrients, medicaments and the like, which is beneficial to the germination and growth of the Apocynum venetum seed.

[0011] However, in the high mountainous area of Xinjiang and the like, due to the limitation of geographical conditions, it is difficult to realize the mechanized seeding operation of the pelletized Apocynum venetum seed. Unlike the lush high mountain environment in the inland, the high mountains in Xinjiang and the like are mostly composed of hard rocks, and some mountain bodies lack plants, fallen leaves and the like, which to some extent aggravates the rapid change of the temperature of the plant growth environment, resulting in the lack of suitable temperature and humidity for the plant growth, and the poor plant growth environment.

[0012] The application aims to provide an Apocynum venetum pelletized seed coating structure and application thereof for solving the problems of difficult seeding of the Apocynum venetum and difficult formation of the blocky plant community in some high mountainous areas of Xinjiang and the like.

[0013] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: The application provides an Apocynum venetum pelletized seed coating structure, which comprises a paper coating shell, a hollow plant straw and a plurality of pelletized Apocynum venetum seeds.

[0014] The paper coating shell is made of degradable fiber material. The degradable fiber material can be regenerated paper.

[0015] The hollow plant straw is a degradable plant straw.

[0016] The hollow plant straw is one or more of a corn stem core, an Apocynum venetum stem and a cotton straw.

[0017] The pelletized Apocynum venetum seed comprises Apocynum venetum seeds and nutrients.

[0018] The paper covering shell has an outer diameter of 1-10 cm. Preferably, the paper covering shell has an outer diameter of 2-5 cm.

[0019] The apophyllous seed pellet coating structure is prepared by a method comprising the following steps: S1, laying the apophyllous seed pellets on a first shell, and placing a hollow plant stalk on the apophyllous seed pellets; S2, after step S1 is completed, wrapping the first shell into a spherical shape, and fixing the first shell by adhesive bonding; In step S1, the first shell is composed of several sheets of paper.

[0020] Application of the apophyllous seed pellet coating structure.

[0021] The apophyllous seed pellet coating structure is used for apophyllous planting in mountainous conditions.

[0022] The method comprises the following steps: delivering the apophyllous seed pellet coating structure to the region to be repaired by a launching tool.

[0023] The launching tool is one of a slingshot and a catapult.

[0024] The planter places the apophyllous seed pellet coating structure in a backpack, and when the planter reaches the vicinity of the region to be repaired, the apophyllous seed pellet coating structure can be launched to the region to be repaired by the launching tool. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be described by way of example and with reference to the accompanying drawings, in which: Figure 1 FIG. 1 is a structural schematic diagram of the apophyllous seed pellet coating structure in the present application.

[0026] In the figure, the markings are as follows: 1, paper covering shell; 2, hollow plant stalk; and 3, apophyllous seed pellet. DETAILED DESCRIPTION

[0027] All features disclosed in this specification, or all steps of any method or process disclosed in this specification, may be combined in any combination, except combinations where at least some of the features and / or steps are mutually exclusive.

[0028] Any feature disclosed in this specification, unless stated otherwise, can be replaced by any equivalent or similar feature.

[0029] Example 1 (I) Apophyllous seed collection In September to October of the year before sowing, mature Apocynum venetum L. seed pods were collected from healthy and robust mother plants. The collected seed pods were placed in breathable woven bags and stored in a dry and ventilated place for 10 to 15 days. After the seed pods were naturally dried, the seed coats and pappi were removed, and impurities were removed using a 2 mm mesh sieve in a well-ventilated environment. The collected Apocynum venetum L. seeds were nearly jujube kernel-shaped, about 2.5 mm to 3.0 mm long, and the thousand seed weight was about 0.33 to 0.36 g. The collected Apocynum venetum L. seeds were stored in a dry and airtight container.

[0030] (II) Apocynum venetum L. seed pelleting treatment Currently, there are mature seed pelleting treatment factories on the market, such as the standardized processing workshop for traditional Chinese medicine seeds in Longxi County. Therefore, pelleted Apocynum venetum L. seeds can be obtained through outsourcing. Pelleted seeds usually contain trace elements, nutrients, pesticides, fungicides, water retention agents, pigments, etc. There are mature solutions on the market, such as the Lianong + Xuesheng solution of Syngenta Crop Protection AG (Switzerland) (wherein Lianong is a seed treatment suspension concentrate (a fungicide that can prevent and control root rot, damping-off, sudden collapse, etc.), and the pesticide ingredient is fluazinam + fludioxonil + metalaxyl-M; Xuesheng is a seed treatment dispersible powder (a pesticide that can prevent and control cotton aphids, corn planthoppers, cotton seedling aphids, rape yellow striped flea beetles, ginseng needle beetles, and potato aphids), and the pesticide ingredient is thiamethoxam).

[0031] Due to the relatively small amount of pelleted Apocynum venetum L. seeds required for the test, in order to shorten the test time, the pelleted Apocynum venetum L. seeds in the examples were prepared by the Desert and Oasis Ecology State Key Laboratory of the Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences. Test results show that the particle size of the pelleted Apocynum venetum L. seeds used is between 1.5 and 2.2 mm, the seed rate is 100%, the single seed rate is 99%, the empty seed rate is 0%, the uniformity is 99%, (III) Sample preparation Take 2.0 kg of pelleted Apocynum venetum L. seeds and divide them into four equal parts, each weighing 0.5 kg. These are the reference group, the test group, the heat preservation group, and the control group, respectively.

[0032] Take 0.5 kg of pelleted Apocynum venetum L. seeds from the test group and coat them. The coating process is as follows.

[0033] (1) Place the pelleted Apocynum venetum L. seeds on three layers of degradable paper (the paper used for coating is 80 g / m2, cut to an appropriate size), and then place corn stalk cores or cotton stalks on top of the pelleted Apocynum venetum L. seeds.

[0034] (2) After step (1) is completed, the innermost degradable paper is bonded with paste to form a spherical shape; then the outer layer of degradable paper is bonded to increase the strength of the shell; after bonding, it is ventilated and dried, and naturally shaped to obtain the Apocynum venetum pelletized seed coating structure.

[0035] (Four) Test test 1. The reference group adopts the way of greenhouse seedling to provide reference.

[0036] A certain sunlight greenhouse in Yuli County, Bayinguoleng Mongol Autonomous Prefecture, Xinjiang Uygur Autonomous Region is selected as the reference group seedling place. The seedling time is early February when the sky warms up without significant temperature drop. The daytime temperature in the sunlight greenhouse is maintained at 20-30℃, and the nighttime temperature is maintained at 10-15℃.

[0037] The planting substrate is prepared by mixing nutrient soil, river sand and vermiculite in a weight ratio of 3:1:1.

[0038] Fill the planting substrate into the 50-hole deepening tray and flatten it. Press the bottom of the 50-hole deepening tray filled with planting substrate against the surface of another 50-hole deepening tray filled with substrate with a depth of more than 2 cm. To make the Apocynum venetum root system full of holes and facilitate seedling, first use a wheat seeder to sow 2-3 wheat seeds per hole, then cover 1 cm thick planting substrate, then sow 1-2 Apocynum venetum seeds per hole, and then cover the 50-hole deepening tray with 0.5-1.0 cm thick planting substrate to fill it and flatten it.

[0039] After sowing, use a 6000-fold solution of carbendazim to spray the first water in a micro-sprinkling manner to make the 50-hole deepening tray reach more than 80%, then cover it with plastic film. The daytime temperature in the sunlight greenhouse is maintained at 20-30℃, and the nighttime temperature is maintained at more than 15℃. Wheat germination occurs 7-10 days after sowing, and Apocynum venetum germination occurs 10-12 days after sowing. After Apocynum venetum emerges, the greenhouse temperature is maintained at 20-28℃ during the day and at more than 13℃ at night.

[0040] Greenhouse seedling, 5-7 days after sowing, 10-12 days after sowing, 20-25 days after sowing, 45 days after sowing, the height of the plant can reach 10-15 cm, and the true leaf is 4-5 pairs. After Apocynum venetum emerges, the number of seedlings is determined.

[0041] 2. Select a certain piece of barren mountain in Yuli County as the test group, the insulation group and the control group as the test site. Select three adjacent mountains with basically the same or similar light, temperature, slope and orientation.

[0042] At the end of January, the coated structure of the trial group of Apocynum venetum pelletized seeds and the pelletized Apocynum venetum seeds of the control group were evenly sown in the corresponding test plots, and no other treatment was performed. Among them, at the end of January, the pelletized Apocynum venetum seeds of the heat preservation group were evenly sown in the corresponding test plots, and straw was covered on the surface of the pelletized Apocynum venetum seeds to provide heat preservation.

[0043] After sowing, the germination and seedling growth were checked every 5 days or so. Note: When sowing at the end of January, the outdoor temperature in Yuli County was below 0℃, the average temperature was between -15℃ and 0℃, the daytime temperature of the test barren mountain was about -8℃ to 0℃, and the nighttime temperature was about -15℃ to -10℃.

[0044] 3. Test results.

[0045] 3.1 In Yuli County, the outdoor temperature rose above 0℃ in mid-to-late March, and the outdoor Apocynum venetum seeds usually began to germinate. After inspection, compared with the germination time of the control group in mid-March, the average seed germination time of the test group and the heat preservation group was about 10 days earlier, and the heat preservation group was the earliest.

[0046] After the control group germinated basically, the germination numbers of the test group, the heat preservation group, and the control group were determined. Based on the reference group, the germination rates of the test group, the heat preservation group, and the control group were 67.7%, 59.8%, and 19.1%, respectively. The calculation formula of the germination rate of the test group is as follows: Germination rate = Test group germination number ÷ Control group germination number; the calculation formula of the germination rate of the heat preservation group and the control group is the same.

[0047] After analysis, the inventors believe: (1) Because the test mountainous area in Yuli County has a harsh environment, the Apocynum venetum seeds are easily affected by severe cold weather and prone to freezing injury, which makes the natural germination rate of Apocynum venetum about 15%; the application of pelletization technology to Apocynum venetum seeds (i.e., using the control group's scheme) has improved the germination rate of Apocynum venetum seeds to some extent; (2) By comparison, it can be found that the germination rates of the test group and the heat preservation group have been greatly improved compared with the control group; the heat preservation group uses a large area of straw covering to provide suitable temperature and humidity conditions for the pelletized Apocynum venetum seeds, which promotes the germination time of the seeds and improves the germination rate; The germination rate of the test group is relatively close to that of the heat preservation group, which indicates that the coating structure of the test group has a similar heat preservation effect to the straw of the heat preservation group, which is surprising to the inventors.

[0048] Regarding the effect of the coating structure of the test group on improving the germination rate of Apocynum venetum seeds, the inventors speculate that there may be several factors: (1) The coating structure is prepared from degradable paper; during sowing, the paper coating shell itself is a poor conductor, and the heat inside the paper coating shell is slowly dissipated through it, so that a thin spherical ice layer is easily formed on the outer surface of the paper coating shell, and the spherical ice layer can effectively insulate the cold outside the paper coating shell, forming a local climate microenvironment with relatively constant temperature inside the paper coating shell; (2) The existence of the local climate microenvironment reduces the damage of the outside temperature changes to the apocynum venetum seeds, thereby improving the germination rate of the apocynum venetum seeds; (3) The seeds have respiration under natural conditions, and the respiration of the seeds requires suitable temperature, humidity and oxygen; since the temperature inside the apocynum venetum pelletized seed coating structure is relatively high, it is beneficial to improve the humidity, thereby providing a suitable dormant environment for the apocynum venetum seeds, ensuring the normal respiration of the apocynum venetum seeds, and reducing the influence of dehydration on the germination rate of the apocynum venetum seeds; (4) When the ambient temperature rises, the paper coating shell melts due to the influence of snowmelt, rainfall and the like, exposing the pelletized apocynum venetum seeds and the hollow plant stalks; when the airflow passes through the hollow plant stalks, the Bernoulli effect generated by the hollow structure in the hollow plant stalks can reduce the impact of wind pressure, effectively reducing heat loss; (5) At the same time, the gas flow in the hollow structure of the hollow plant stalks helps to regulate the stem temperature, providing favorable growth conditions for the germination of the apocynum venetum seeds; research shows that under strong light irradiation at noon, the surface temperature of the hollow plant stalks is 3℃~5℃ lower than that of the solid stem, which can effectively prevent the damage to the apocynum venetum seeds caused by high temperature, which is particularly important for the growth and development of plants in arid and high mountain areas in Xinjiang (different from the lush high mountain environment in the inland, the high mountains in Weili County present two extreme conditions of lush and barren mountains, and for the barren mountains, the surface is mainly composed of rocks, which have small specific heat capacity, and the temperature of the rocks will quickly rise under strong light irradiation at noon, thereby affecting the germination of the apocynum venetum seeds); (5) When the ambient temperature rises, the hollow structure in the hollow plant stalks can play the role of capillary, based on the capillary phenomenon, the residence time of water in the hollow structure is increased, which is beneficial to the absorption of plant water, thereby providing suitable humidity for the apocynum venetum seeds and promoting the germination of the apocynum venetum seeds.

[0049] 3.2 In order to further observe the growth of apocynum venetum seedlings, the growth and height of apocynum venetum seedlings were measured on the 50th-52nd day after the basic germination of the control group. The test results show that: (1) the average height of the test group, the heat preservation group and the control group is 18.4 cm, 10.9 cm and 12.1 cm respectively; (2) the germination rate of the control group is low, but the overall growth trend is good; the germination rate of the heat preservation group is high, but the overall growth trend is affected; the germination rate of the test group is high, and the overall growth trend is good.

[0050] After comparison and analysis, the inventors believe that the overall growth trend of the heat preservation group is affected, which may be due to the rice straw; in order to avoid the influence of freezing environment on pelletized apocynum venetum seeds, the rice straw needs to have a certain thickness; when the rice straw is thick, it will block the sunlight, so that the apocynum venetum seedlings lack the necessary light conditions, thereby affecting their growth trend; at the same time, the apocynum venetum seedlings have small top-up capacity, when the rice straw is thick, it will affect the outward growth speed of the apocynum venetum seedlings, and finally affect their growth trend. In order to solve this problem of the heat preservation group, the rice straw attachment can be removed in time after the basic germination of pelletized apocynum venetum seeds and the temperature rises to 5-12℃.

[0051] 3.3 The best scheme for discussing the germination rate of pelletized apocynum venetum seeds is greenhouse seedling raising (i.e. reference group) + transplanting scheme, which has the highest germination rate and the best growth trend of apocynum venetum seedlings; but its seedling raising cost is higher, and it is more difficult to transplant seedlings to high mountain areas.

[0052] The control group adopts the natural germination method, which has the lowest germination rate, but the growth trend of the seedlings is good; the heat preservation group adopts the heat preservation germination method, which provides a suitable growth environment for the early germination of apocynum venetum seeds, but the covered heat preservation layer hinders the subsequent growth of apocynum venetum seedlings, which needs to be removed by artificial means to ensure the growth trend of apocynum venetum seedlings.

[0053] The test group of the present application adopts the structure of coating and hollow plant straw, which solves the problem of heat preservation of apocynum venetum seed germination period and improves the germination rate of apocynum venetum seeds; at the same time, due to the cooperation of the coating structure and the hollow plant straw, the influence on the top-up capacity of apocynum venetum seedlings is small, so as to ensure the overall growth trend of apocynum venetum seedlings.

[0054] Further, after the pelletized apocynum venetum seeds are sown, the seed coating layer on them will melt slowly, and has a certain temperature and humidity regulation and adaptation ability. At the same time, the melted seed coating can provide relatively balanced nutrients for apocynum venetum seeds, improve the germination rate and seedling raising effect. The biological pesticide ingredients such as insecticides and fungicides in the coating directly act on the soil around the seeds, which can reduce the disease and insect pests of apocynum venetum seedlings.

[0055] Further, the simple pelleting of apocynum seed is only suitable for field mechanized operation, and cannot be used in mountainous areas. However, by using the apocynum pelleted seed coating structure of the application, the grower can load it in the form of a backpack, and in the mountainous area to be repaired, the apocynum pelleted seed coating structure can be thrown into the area to be repaired by a bow, which cannot be realized by the simple pelleting of apocynum seed. In addition, by artificially throwing multiple apocynum pelleted seed coating structures into the area to be repaired, it is beneficial to form a block of apocynum seed population, and lay a foundation for the subsequent recovery and growth of the apocynum seed population.

[0056] The present application is not limited to the foregoing specific embodiments. The present application extends to any novel one, or any new combination, of the characteristics disclosed in this specification, as well as to any novel method or process disclosed in any new combination of the steps of the disclosed methods or processes.

Claims

1. A flax pelletized seed coating structure, characterized by, The paper covering shell is spherical, and the pelletized apocynum venetum seeds are located at the bottom of the paper covering shell.

2. The flax pelletized seed coating structure according to claim 1, wherein, The hollow plant stalk is a degradable plant stalk.

3. The flax pelletized seed coating structure according to claim 1 or 2, wherein, The hollow plant stalk is one or more of a corn stalk core, an apocynum venetum stalk, and a cotton stalk.

4. The flax pelletizing seed coating structure according to any one of claims 1 to 3, wherein, The paper covering shell has an outer diameter of 1-10 cm.

5. The flax pelletized seed coating structure according to any one of claims 1 to 4, wherein, The apocynum venetum pelletized seed covering structure is prepared by a method comprising the following steps: S1, laying the pelletized apocynum venetum seeds on a first shell, and placing the hollow plant stalk on the pelletized apocynum venetum seeds; S2, after step S1 is completed, wrapping the first shell into a spherical shape, and fixing the first shell by adhesive bonding; In step S1, the first shell is composed of several sheets of paper.

6. The application of the apocynum venetum pelletized seed covering structure according to any one of the preceding claims 1-5.

7. The nutritional of claim 6, wherein, The apocynum venetum pelletized seed covering structure is used for apocynum venetum planting under mountain conditions.

8. The flax pelletized seed coating structure according to claim 7, wherein, The method comprises the following steps: delivering the apocynum venetum pelletized seed covering structure to the region to be repaired by a launching tool.

9. The flax pelletized seed coating structure according to claim 8, wherein, The launching tool is one of a slingshot and a catapult.

10. The flax pelletized seed coating structure according to claim 8 or 9, wherein, The apocynum venetum pelletized seed covering structure is placed in a backpack by the planter, and when the planter reaches the vicinity of the region to be repaired, the apocynum venetum pelletized seed covering structure can be launched to the region to be repaired by the launching tool.

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