Soil improvement planting method for ornamental corallodiscus corallodiscus

Abstract

The invention discloses a soil improvement and planting method for ornamental coppergrass, and relates to the technical field of garden biologication.The soil improvement and planting method comprises the following steps that S1, a site is leveled; s2, seed treatment; s3, sowing the seeds; s4, transplanting; s5, weeding; s6, fertilizing and watering; s7, disease and pest control. The method has the main advantages that by controlling the use and planting density of watering and tailings, the number of times of watering and fertilizing is reduced by planting personnel in the growth process of corallodiscus flabellatus, the effect that soil is not too fertile is achieved, then the use amount of the tailings in the soil is increased, and the yield of corallodiscus flabellatus is increased. Therefore, the natural growth environment of the coppergrass can be better simulated, and the coppergrass is rich in copper element.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of garden biotechnology, and more particularly to a soil improvement planting method for ornamental copper grass flowers. BACKGROUND

[0002] Copper grass flower, scientific name Elsholtzia splendens, is a plant of the Labiatae and Elsholtzia. It is an erect herb, 30-50 cm tall. The stem is erect, dirty yellow purple, covered with nearly 2 rows of sparse soft hairs, and the base is mostly branched, with straight and developed branches, with inflorescences at the top, and internodes elongated by 2-12 cm. The leaves are ovate-triangular, ovate-lanceolate to lanceolate or lance-shaped. The spike-like inflorescences are terminal and biased to one side, composed of many whorls of cymose inflorescences; the bracts are nearly round or broad ovate, with a tail-like tip at the top. The flowering and fruiting period is from September to November.

[0003] In the existing process of artificial planting of ornamental copper grass flowers, the geological abundance of nitrogen, phosphorus and potassium inorganic matter in the soil leads to fertile soil with low sandstone content, and the existing planting density is too large, with high canopy density and poor ventilation. The overgrown branches and leaves of copper grass flowers lead to the weakening of some unique stress resistance of copper grass flowers, which affects the overall growth state of copper grass flowers.

[0004] The existing related invention patents are as follows:

[0005] Chinese patent application number: CN201910853955.4, invention patent name: a seedling raising method for copper grass flowers. The invention selects near-mature copper grass flower spikes to harvest seeds, which can avoid seed loss caused by ejection when the spikes mature, and solves the problem of difficult seed collection. The invention uses indoor artificial environment treatment to promote the after-ripening of copper grass flower spikes, ensuring the maturity of the seeds. At the same time, a self-made germination agent is used to induce the germination of copper grass flower seeds, solving the problem of low seed germination rate under natural conditions. The average seedling rate of copper grass flowers using the method described in the invention is 99.87%, and the effect is remarkable. In the invention, neither the after-ripening treatment of copper grass flower spikes, nor the induction of seed germination, nor seedling cultivation requires special facilities, and the drugs used are conventional reagents, which are inexpensive and easy to obtain, with low cost.

[0006] The above scheme solves the problem of difficult seed collection of copper grass flowers, but the existing process has too much nitrogen, phosphorus and potassium inorganic matter in the soil, and copper grass flowers only need a certain amount of fertility during growth, so fertile soil will affect the growth of copper grass flowers. Because the root system of copper grass flower is originally adapted to the loose structure of poor soil, the penetration resistance of lateral roots increases by 30%-50% after compaction, and the water absorption efficiency decreases. SUMMARY

[0007] The application aims to solve the problems of the prior art, and provides an ornamental copper grass soil improvement planting method, which solves the problem of affecting the growth of copper grass due to artificial planting.

[0008] The application simulates the original environment of copper grass growth, reduces the watering and fertilizing times during the growth process, and increases the amount of tail sand used. The original environment simulation means providing copper grass with growth conditions similar to its natural habitat, which helps copper grass better adapt to the environment and reduces growth problems caused by artificial planting.

[0009] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0010] An ornamental copper grass soil improvement planting method, comprising the following steps:

[0011] S1, site leveling: the site of the copper grass ornamental cultivation base is cleared of garbage and weeds, the original good resources of the site are preserved, the positions of underground pipelines and other infrastructure are found and marked and protective measures are taken, the slope is leveled, the planting site is applied with organic matter and organic fertilizer, slow-release fertilizer capsules are pre-embedded in the holes of the organic fertilizer, the planting soil is mixed with tail sand, and the microtopography is completed;

[0012] S2, seed treatment: after harvesting the whole plant or picking the seed ear, it is placed on a colored cloth and dried for one to two days, then the seed ear is rubbed and the seeds are cleaned, the dried seeds are packed in cloth bags and hung in a well-ventilated dry place for storage, the seeds are coated with a biodegradable film containing gibberellin and heavy metal chelating agent to improve the germination rate;

[0013] S3, seed sowing: evenly spread the seeds into the soil, and then moisturize the seeds by fine spraying, since the copper grass seeds are small, it is easier to bloom by not laying thin soil on the surface;

[0014] S4, transplanting: the method of seedling transplanting is used for propagation, appropriate thinning is carried out, in the directly sown plot, first remove the dense or weak seedlings to adjust the density, then transplant the healthy seedlings to other areas, when the seedlings are higher than 10cm, transplant them, the plant spacing is 30-50cm, the bare root is transplanted, the planting depth is about 3cm, and the transplanting is done before the rain, and the root fixing water is poured after planting;

[0015] S5, weeding: since the soil of the copper grass ornamental cultivation base is fertile, there are more weeds in the copper grass planting area, in order to achieve better ornamental effect, artificial weeding is carried out five times during the whole growth season, and the weeds are pulled out or cut off after the rain;

[0016] S6, fertilization and watering: copper grass flower has the characteristics of poor tolerance and heavy metal resistance, and generally does not need fertilization after planting, but in order to achieve the effect of greening, thin fertilizer needs to be applied twice during the growth period of the seedling, the fertilization method is to spray compound fertilizer before rain, spray Renerj during flowering to promote flowering, and then regularly water the copper grass flower;

[0017] S7, disease and pest control: through regular pesticide spraying, the effect of disease and pest control on copper grass flower is achieved.

[0018] As a further improvement of the present application, in step S1, the mass percentage of organic matter in the organic fertilizer applied per 100 square meters of planting land is not less than 45%, the content of nitrogen, phosphorus pentoxide and potassium oxide in the organic fertilizer per bag is not less than 5%, and the volume content of tailings in the planting soil per 100 square meters is 8-10m³. Thus, the absorption efficiency of copper grass flower to soil nutrients is improved. The appropriate supply of nitrogen, phosphorus and potassium can promote the growth and development of copper grass flower and improve its yield and quality. The content of tailings per 100 square meters is 8-10m³, which means that there is enough tailings for the growth of copper grass flower in these areas, and copper grass flower can also play a role in ecological restoration.

[0019] As a further improvement of the present application, in step S4, the specific transplanting time is from late March to late June, and the seedlings can be transplanted when the height is more than 10cm, and the plant spacing is controlled between 30-50cm to ensure enough growth space between plants; the bare root transplanting method is adopted, the planting depth is about 3cm, and the transplanting is preferably carried out before rain to reduce water evaporation after transplanting, and the root water is poured after planting. Thus, appropriate plant spacing can be ensured, which is helpful for ventilation between plants and reduces the occurrence and spread of diseases and pests. Moreover, the bare root transplanting is relatively simple and easy to perform, which can save manpower, material resources and financial resources.

[0020] As a further improvement of the present application, in step S6, the compound fertilizer with a nitrogen, phosphorus and potassium content of 45% is used for spraying, and 15kg of the compound fertilizer is sprayed per mu. Thus, the needs of copper grass flower at different growth stages can be fully met.

[0021] As a further improvement of the present application, in step S6, the main component of Renerj is potassium dihydrogen phosphate, and the phosphorus element in the potassium dihydrogen phosphate is used to promote plant growth and development. Thus, the light energy is effectively converted into chemical energy to provide power for the growth of plants.

[0022] As a further improvement of the present application, in step S6, the watering cycle is once a week, but 2-3 times a week is maintained from July to September. By adjusting the watering cycle, the growth needs of copper grass flower in different seasons can be better met.

[0023] As a further improvement of the application, in step S1, a layer of subsoil is laid in the backfill area, with a thickness of 10-20 cm, and tailings are mixed with organic fertilizer for covering, with a mixing content of 18 m³ of tailings per 100 square meters of the planting soil, and the nitrogen, diphosphorus pentoxide and potassium oxide content of the organic fertilizer is not less than 5%, the mixed tailings are backfilled into 100 square meters of planting area, and a bulldozer is used for leveling. The use of mixed tailings and organic fertilizer can enhance the stress resistance of copper grass flowers.

[0024] As a further improvement of the application, the tailings are coarsely crushed by a jaw crusher, the coarsely crushed tailings are secondarily crushed by a cone crusher, the medium crushed tailings are crushed into 0-1 mm machine-made sand by a VSI sand making machine, the VSI sand making machine can ensure that the tailings are discharged in a round shape and can directly produce sand particles meeting the medium sand and fine sand standards, the crushed tailings are screened into three different sizes of tailings particles by a circular vibrating screen, the screening is sequentially performed by 0.25 mm, 0.35 mm and 0.5 mm screen meshes, the 0.25-0.35 mm particle size is small tailings, the 0.35-0.5 mm particle size is medium tailings, and the 0.5-1.0 mm particle size is large tailings, the mixing of the tailings and the organic fertilizer is a layered design of top small tailings, medium tailings, middle organic fertilizer and bottom large tailings, the layered design is refined into a gradient permeation structure, the large tailings in the gradient permeation structure account for 40%, the medium tailings and the organic fertilizer are mixed at a ratio of 3:1, 5-10% of palygorskite is mixed into the top small tailings, and a plurality of holes slightly smaller than the medium tailings are formed in the organic fertilizer. The jaw crusher, the cone crusher, the VSI sand making machine and the circular vibrating screen are used to separate and screen tailings of different sizes.

[0025] As a further improvement of the application, in step S3, the seed sowing adopts mixed sowing of copper grass flower seeds and alfalfa seeds, and the mixed sowing is performed by alternately planting the copper grass flower seeds and the alfalfa seeds. The sulfide leaching solution generated by the absorption of tailings by alfalfa is used to promote the improvement of soil structure, increase the content of soil organic matter and improve soil fertility.

[0026] Compared with the prior art, the application has the following beneficial effects:

[0027] 1. The tailings and the organic fertilizer are mixed with the planting soil, and the nutrients are gradually released into the soil with the decomposition of the organic matter, providing a stable and long-lasting nutrient supply for the copper grass flowers. This balanced nutrient release mode avoids the problem of excess or insufficient nutrients, which is beneficial to the healthy growth of the copper grass flowers. Moreover, it can reduce the nutrient loss and waste caused by multiple fertilizations, thereby improving the utilization rate of nutrients.

[0028] 2. The interplay of fine-grained tailings, organic fertilizer, and large-grained tailings increases soil aeration, facilitating root respiration and reducing root stress caused by hypoxia. The organic fertilizer in the center provides the soil with abundant nutrients, improves soil structure, increases water and fertilizer retention, and makes the soil more porous and breathable. The fine-grained tailings at the top form a protective layer on top of the soil, slowing evaporation and maintaining soil moisture. Furthermore, the fine-grained tailings prevent the soil surface from becoming compacted, keeping the soil loose and conducive to root growth and expansion.

[0029] 3. Through the interaction of fine-grained tailings, organic fertilizer, and large-grained tailings, the organic fertilizer slowly permeates the pores of the tailings, achieving a gradual release of nutrients. This avoids the potential for nutrient waste and soil pollution caused by a single, large-scale fertilization. This slow-release effect helps the roots of the copper grass flower continuously and steadily absorb nutrients, thereby improving fertilizer utilization. Furthermore, the pore structure of the tailings helps to secure water-soluble nutrients, preventing them from being washed away by rainwater, thereby reducing nutrient loss.

[0030] 4. The fine and large tailings at the bottom help reduce soil moisture, preventing root damage from prolonged immersion in water. Furthermore, the fine tailings intercept some impurities and suspended matter in the seeping water, thereby maintaining smooth soil drainage. The large tailings at the bottom provide good water permeability, the organic fertilizer in the middle improves soil structure and regulates moisture, and the fine tailings at the top slow evaporation and filter impurities. Together, these three significantly improve overall soil drainage.

[0031] 5. The holes created by the tailings and organic fertilizer, as well as the holes inside and on the surface of the organic fertilizer, increase ventilation area, thereby promoting heat dissipation. Covering the organic fertilizer with a top layer of fine-grained tailings can reduce evaporation and loss of nutrients from the organic fertilizer. Laying a layer of medium-sized tailings on top of the organic fertilizer will prevent the small tailings from completely blocking the gaps due to the irregular shape of the gaps between the medium-sized tailings. This will prevent the organic fertilizer from being blocked while reducing evaporation and loss of nutrients from the organic fertilizer.

[0032] 6. By alternating the planting of copper grass and alfalfa, both the copper contained in the tailings and the sulfide leachate produced by the tailings can be absorbed. Alternating the planting of the two can bring out their respective advantages and form a synergistic effect. The planting of alfalfa will absorb the sulfur pollution present in the tailings, thereby ensuring that the use of tailings will not pollute the overall planting environment. In addition, copper grass and alfalfa have similar colors, and copper grass usually blooms in late autumn and early winter, while the flowering period of alfalfa is concentrated in late spring and early summer. Therefore, the mixed planting of copper grass and alfalfa will keep this ornamental vegetation group ornamental at different times. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific implementations disclosed below.

[0034] A soil improvement planting method for ornamental copper grass flowers, comprising the following steps:

[0035] S1, site leveling: the site of the copper grass flower ornamental cultivation base is cleared of garbage and weeds, the original good resources of the site are preserved, the positions of underground pipelines and other infrastructure are found and good marking and protection measures are taken, the slope is leveled, organic matter and organic fertilizer are applied to the planting area, slow-release fertilizer capsules are pre-embedded in the holes of the organic fertilizer, and the planting soil is mixed with tailings, and the microtopography is completed. The slow-release fertilizer capsules are wrapped in polylactic acid shells, and the release rate matches the growth cycle of the copper grass flowers, with 30% release in the germination period and 70% release in the flowering period. The planting area is applied with organic matter with a content of not less than 45% per 100 square meters, and organic fertilizer with nitrogen, phosphorus pentoxide and potassium oxide contents of not less than 5% per 100 square meters, 30 bags of organic fertilizer are used per 100 square meters, and the planting soil is mixed with tailings and the microtopography is completed. The volume content of the tailings mixed in the planting soil per 100 square meters is 8-10 m³. A layer of bottom soil is laid in the backfill area with a thickness of 10-20 cm, the tailings and organic fertilizer are mixed and covered, the mixing content of the tailings in the planting soil per 100 square meters is set to 18 m³, and the nitrogen, phosphorus pentoxide and potassium oxide contents of the organic fertilizer are all not less than 5%, the mixed tailings are backfilled into the 100 square meter planting area, and a bulldozer is used for leveling. The tailings and organic fertilizer are mixed with the planting soil, and the nutrients will gradually be released into the soil with the decomposition of the organic matter, providing a stable and sustainable nutrient supply for the copper grass flowers. This balanced nutrient release mode avoids the problem of excess or insufficient nutrients, which is beneficial to the healthy growth of the copper grass flowers. Moreover, it can reduce the nutrient loss and waste caused by multiple fertilizations and improve the utilization rate of nutrients. Reducing the frequency of fertilization can also reduce the pressure on the root system of the copper grass flowers, allowing the copper grass flowers to grow and develop more naturally.

[0036] And in the tailings of 5%-10% of the addition of palygorskite, tailings and palygorskite through jaw crusher coarse crushing, coarse crushing tailings and palygorskite through cone crusher for medium crushing, medium crushing tailings and palygorskite through VSI sand making machine tailings and palygorskite broken into 0-1mm machine-made sand, VSI sand making machine can guarantee the tailings and palygorskite discharge grain type round can directly produce in line with the medium sand, fine sand standard sand, broken tailings and palygorskite through circular vibrating screen into three different size of tailings particles, screening through 0.25mm, 0.35mm and 0.5mm screen in turn, 0.25mm~0.35mm particle size for small tailings, 0.35mm~0.5mm particle size for medium tailings, 0.5mm~1.0mm particle size for large tailings. Tailings and palygorskite mixed its layered structure can form natural ventilation channel, palygorskite rod crystal disorder lapping formed layered capillary channel, combined with the tailings of large and small particle size grading, build a three-dimensional ventilation network, effectively avoid the root of the lack of oxygen caused by anaerobic respiration inhibition.

[0037] The mixture of tailings and organic fertilizer is a layered design of small tailings at the top, medium tailings, medium organic fertilizer, and large tailings at the bottom. The layered design is refined into a gradient permeation structure. The large tailings in the gradient permeation structure account for 40%. The medium tailings and organic fertilizer are mixed in a ratio of 3:1. 5-10% palygorskite is added to the top fine tailings. The organic fertilizer has several holes that are slightly smaller than the medium tailings. Thus, the large particle tailings at the bottom form a good drainage layer at the bottom of the soil, which can quickly drain excess water and avoid root waterlogging. The organic fertilizer slowly permeates through the pores of the large particle tailings to the roots of the copper grass. The slow permeation of the organic fertilizer in the tailings pores can achieve gradual release of nutrients, avoiding the waste of nutrients caused by one-time large-scale fertilization. The holes in the organic fertilizer and on its surface increase the ventilation area, thereby promoting the emission of heat generated by the organic fertilizer. The coverage of fine tailings and medium tailings will not block the organic fertilizer while reducing the evaporation loss of nutrients in the organic fertilizer. The tailings may also contain other trace elements beneficial to the growth of copper grass. The addition of these elements can adjust the nutrient content of the soil and provide more comprehensive nutritional support for copper grass.

[0038] Example 1 verifies the effects of different tailings content, palygorskite ratio, slow-release fertilizer capsule usage, and layered design on the drainage of copper grass planting soil, nutrient release efficiency, and plant growth. The site leveling process parameters are optimized.

[0039] The comparative data of the example and its analysis are as follows:

[0040] Table 1 Comparison of different conditions (1)

[0041]

[0042] Table 2 Comparison data table of different conditions (2)

[0043]

[0044] From the above two comparison tables, it can be seen that: the drainage efficiency of tailings content of 10 m³ / 100 m² is increased by 10-15% compared with 8 m³, but the cost is increased by 8%, the cost and performance balance of tailings content of 9 m³; The air permeability of 10% pozzolana is significantly improved, but 5% pozzolana can meet the basic demand, and the top fine tailings mixed with pozzolana can get additional improvement of surface water retention; The use of slow-release fertilizer capsules throughout the cycle makes the nutrient release highly matched with the growth stage, with a survival rate of 95% during the germination period, and an increase of 25% in the number of flower buds during the flowering period; Compared with the layered design, the gradient permeation structure realizes the balance of drainage, fertilizer retention and air permeability through 40% large tailings + 3:1 organic fertilizer, and the top fine tailings mixed with pozzolana reduces the evaporation of organic fertilizer nutrients, and improves the utilization rate by 12%.

[0045] S2, seed treatment and sowing seeds: after harvesting the whole plant or picking the seed ear, it is placed on a colored cloth for one to two days, then the seed ear is rubbed and cleaned. After the seeds are dried, they are packed in cloth bags and hung in a well-ventilated and dry place for storage. The seeds are coated with a biodegradable film containing gibberellin and heavy metal chelating agent to improve germination rate. When planting is needed, copper grass flower and alfalfa seeds are sowed into the soil in turn, and the backfilling area is evenly laid with large particle tailings, organic fertilizer, medium tailings and fine particle tailings in turn, so as to provide an ideal environment for the root growth of copper grass flower by comprehensively considering drainage, air permeability and fertility. Through the use of large particle tailings and drainage devices, the porosity of large particle tailings is relatively large at the bottom, and the bottom drainage device can make more effective use of these pores for drainage, reducing the penetration resistance of water in the tailings. Since copper grass flower has strong absorption capacity for copper elements, and alfalfa may have good absorption effect on harmful substances such as sulfides, alternating planting can take advantage of their respective advantages and form a synergistic effect to improve the overall efficiency of soil remediation.

[0046] Example 2, this experiment adjusts the seed coating technology, tailings laying method and mixed sowing ratio to verify its influence on the planting effect of copper grass flower.

[0047] The comparison data of the examples and their analysis are as follows:

[0048] Table 3 Summary and comparison table of seed treatment and sowing

[0049]

[0050] From the above comparison table: the uncoated germination rate is only 72%, while the gibberellin + chelating agent coating germination rate is increased to 92%, and the heavy metal absorption efficiency is significantly improved, thereby proving that the chelating agent can activate the passivated heavy metals in the soil and promote the absorption of copper grass flowers; and the optimization of the tailings laying method increases the copper absorption by 30%, and the coverage of fine tailings can reduce nutrient evaporation, making the sulfide degradation rate reach 85%.

[0051] S3, transplanting: the mixed sowing of copper grass flower seeds and alfalfa seeds is adopted, and the mixed sowing method is to plant copper grass flower seeds and alfalfa seeds alternately, so that the copper element in the tailings can be absorbed by the copper grass flower, and the sulfide leaching liquid generated by the tailings can be absorbed by the alfalfa, and the two are planted alternately to exert their respective advantages, form a synergistic effect, and improve the overall efficiency of soil remediation. Moreover, since copper grass and alfalfa both belong to the purple system, they have good uniformity in color. The planting of alfalfa can absorb the sulfur element pollution existing in the tailings mine, thereby ensuring that the use of the tailings mine will not pollute the overall planting environment. Moreover, the color of copper grass and alfalfa is similar, and copper grass usually blooms in late autumn and early winter, while alfalfa blooms in late spring and early summer, so the mixed planting of copper grass and alfalfa will keep the ornamental vegetation group in different periods having ornamental value.

[0052] The method of seedling transplantation is used for propagation. The specific transplanting time is from late March to late June, and the best transplanting time for seedling transplantation is from late March to mid-April, but under the condition of sufficient cultivation measures, it can be transplanted before the end of June. The later the transplanting time is, the greater the planting density must be, so as to ensure the coverage rate in the later period. The plant spacing is controlled between 30-50 cm to ensure sufficient growth space between plants; the bare root transplantation method is adopted, and the planting depth is about 3 cm. The transplantation is preferably carried out before the rain to reduce water evaporation after transplantation, and the root water is poured after planting. It is helpful to the ventilation between plants and reduces the occurrence and spread of diseases and pests. Moreover, the bare root transplantation is relatively simple and easy to carry out, which can save manpower, material resources and financial resources.

[0053] In the planting of copper grass, different variable combinations of the mixing ratio of copper grass and alfalfa, the transplanting time and the density are used to obtain the best time of copper grass and alfalfa.

[0054] The comparison data of the embodiment and its analysis are as follows:

[0055] Table 4 Comparison table of mixed sowing and transplanting conditions of copper grass and alfalfa

[0056]

[0057] From the above comparison table, it can be seen that: 1:1 ratio of landscape level is the most abundant, but the soil repair efficiency is balanced; and 2:1 ratio preferentially promotes copper element absorption, suitable for high copper contaminated soil; 1:2 ratio focuses on sulfide purification, suitable for sulfide pollution areas such as tailings. Therefore, it is concluded that the landscape needs to be transplanted in March-April, and the density is 25-30 plants / m2; and the functional repair needs to be transplanted in May-June, and the density is 35-45 plants / m2.

[0058] S4, maintenance after transplanting: because the soil of the copper flower ornamental cultivation base is fertile, and there are many weeds in the copper flower planting area, in order to achieve better ornamental effect, artificial weeding is carried out five times during the whole growth season, and the weeds are pulled out or cut off after rain; in order to achieve the effect of re-greening, thin fertilizer needs to be applied twice during the growth period of seedlings, and the application method is to apply 45% compound fertilizer before rain, and the compound fertilizer is applied at the rate of 15 kg per mu. During the flowering period, Renerjia mainly containing potassium dihydrogen phosphate is sprayed to promote flowering. Then the copper flower is regularly watered, and the watering cycle is once a week, but 2-3 times a week from July to September. By adjusting the watering cycle, the growth needs of the copper flower in different seasons can be better met.

[0059] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A soil improvement planting method for ornamental copper grass flowers, comprising the following steps: S1. Site Leveling: Remove garbage and weeds from the site of the copper grass flower ornamental cultivation base, preserve the original good resources of the site, locate the location of infrastructure such as underground pipelines, mark them and take protective measures, level the site along the slope, apply organic matter and organic fertilizer to the planting site, embed slow-release fertilizer capsules in the holes of the organic fertilizer, mix the planting soil with tailings, and prepare the micro-topography; S2. Seed treatment: After harvesting the whole plant or the seed ears, place them on colored striped cloth to sunbathe for one to two days, then rub the seed ears and clean the seeds. After the seeds are dried, put them in cloth bags and hang them in a ventilated and dry place for storage. The seeds are coated with a biodegradable film containing gibberellins and heavy metal chelators to improve the germination rate; S3. Sowing seeds: Sprinkle the seeds evenly into the soil, and then moisturize the seeds with a fine spray; S4. Transplantation: Propagation is carried out by seedling transplantation, with appropriate thinning. In plots where seeds are directly sown, first remove overcrowded or weak seedlings to adjust the density. Then transplant the healthy seedlings to other areas. Transplant when the seedlings are more than 10 cm tall, with a spacing of 30 to 50 cm between rows and plants. Transplant with bare roots at a depth of about 3 cm. Transplant before rain and water after planting to establish roots. S5. Weeding: Because the soil in the copper grass ornamental cultivation base is fertile, there are many weeds growing in the copper grass planting area. In order to achieve a better viewing effect, weeding is carried out five times throughout the growing season to pull out or cut off the weeds that emerge after rain. S6. Fertilization and Watering: Due to its resistance to barrenness and heavy metals, copper grass flowers generally require almost no fertilization after planting. However, in order to achieve a regreening effect, thin fertilizers should be applied twice during the growth period of the seedlings. The fertilization method is to spread compound fertilizer before the rain and spray Runerjia during the flowering period to promote flowering. Then, the copper grass flowers should be watered regularly. S7. Disease and pest control: Through regular pesticide spraying, the diseases and pests of copper grass flowers can be controlled.

2. The method for improving soil and planting ornamental copper grass flowers according to claim 1, characterized in that: In step S1, the mass percentage of organic matter in the organic fertilizer applied per 100 square meters of planting land is not less than 45%, the nitrogen, phosphorus pentoxide and potassium oxide contents of each bag of the organic fertilizer are not less than 5%, and the volume content of tailings in the planting soil mixture per 100 square meters is 8-10m³.

3. The soil improvement planting method for ornamental copper grass flowers according to claim 1, characterized in that: In step S4, the specific transplanting time is from late March to late June. The seedlings can be transplanted when they are more than 10 cm tall, and the spacing between rows and plants is controlled between 30 and 50 cm to ensure that there is enough growth space between the plants. The bare-root transplanting method is adopted, and the planting depth is about 3 cm. The transplanting should be carried out before the rain as much as possible to reduce water evaporation after transplantation, and water should be poured after planting to ensure that the roots are fixed.

4. The soil improvement planting method for ornamental copper grass flowers according to claim 1, characterized in that: In step S6, the compound fertilizer with a nitrogen, phosphorus and potassium content of 45% is broadcasted, and 15 kg of the compound fertilizer is broadcasted per mu.

5. The soil improvement planting method for ornamental copper grass flowers according to claim 1, characterized in that: In step S6, the main component of Runerjia is potassium dihydrogen phosphate, and the phosphorus element in the potassium dihydrogen phosphate is used to promote plant growth and development.

6. The soil improvement planting method for ornamental copper grass flowers according to claim 1, characterized in that: In step S6, the watering cycle is to water the plants once a week at irregular intervals, but water the plants once every 2-3 days from July to September.

7. The soil improvement planting method for ornamental copper grass flowers according to claim 1, characterized in that: In step S1, a layer of subsoil is laid in the backfill area with a thickness of 10-20 cm, and the tailings are mixed with organic fertilizer and covered. The mixing content of the tailings in every 100 square meters of the planting soil is set to 18 m³, and the nitrogen, phosphorus pentoxide and potassium oxide contents of the organic fertilizer are not less than 5%. The mixed tailings are backfilled into the 100 square meters planting area and leveled using a bulldozer.

8. The soil improvement planting method for ornamental copper grass flowers according to claim 8, characterized in that: The tailings are coarsely crushed by a jaw crusher, the coarsely crushed tailings are secondary crushed by a cone crusher, and the medium-crushed tailings are crushed into 0-1mm machine-made sand by a VSI sand making machine. The VSI sand making machine can ensure that the tailings are rounded and can directly produce sand particles that meet the standards of medium sand and fine sand. The crushed tailings are sieved by a circular vibrating screen into three different sizes of tailings particles: large, medium and small. The sieving is carried out in sequence through 0.25mm, 0.35mm and 0.5mm sieves. The 0.25mm~0.35mm particle size The tailings are small, the tailings with a particle size of 0.35mm to 0.5mm are medium, and the tailings with a particle size of 0.5mm to 1.0mm are large. The tailings and organic fertilizer are mixed in a layered design of small tailings at the top, medium tailings, organic fertilizer in the middle, and large tailings at the bottom. The layered design is refined into a gradient permeability structure, in which the large tailings account for 40%. The medium tailings and organic fertilizer are mixed in a ratio of 3:1, and 5-10% of palygorskite is added to the fine tailings at the top. A number of holes slightly smaller than the medium tailings are opened in the organic fertilizer.

9. The soil improvement planting method for ornamental copper grass flowers according to claim 1, characterized in that: In step S3, the sowing seeds are mixed with copper grass seeds and alfalfa seeds, and the mixed sowing method is to plant copper grass seeds and alfalfa seeds alternately.

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