High-yield corn cultivation method

Abstract

The invention relates to the technical field of plant growth regulators, in particular to a high-yield corn cultivation method. The invention provides a high-yield corn cultivation method which comprises the following steps: (1) mixing corn with a coating agent for coating treatment, and then planting; (2) spraying a plant growth regulator in an elongation stage, a large bell mouth stage and a tasseling and spinning stage; (3) harvesting the corn in a full ripening stage. The high-yield cultivation method for the corn can effectively promote growth of the corn and remarkably improve the yield of the corn, and has the excellent technical effect of preventing and treating corn diseases and insect pests.

Description

Technical Field

[0001] The invention relates to the technical field of plant growth regulators, and in particular to a high-yield corn cultivation method. Background Art

[0002] Corn is an excellent food crop, an important source of feed for animal husbandry, breeding, aquaculture, etc., and one of the indispensable raw materials for food, medical and health care, light industry, chemical industry, etc. In addition, corn also has many biological activities, such as anti-oxidation, anti-tumor, hypoglycemic, immunity enhancement, antibacterial and bactericidal, etc., and has broad development and application prospects.

[0003] The selection of land, varieties and sowing methods is extremely important in the corn planting process. However, the time from sowing to row closure is too long in corn cultivation technology, which makes corn plants prone to premature aging in the middle and late stages of growth, and is not conducive to cultivation in high temperature areas, resulting in poor yield and quality. Most of the existing corn yield-increasing technologies use the method of increasing fertilizers. Although it can increase soil fertility and increase crop yields in the short term, excessive or unreasonable fertilizer application reduces fertilizer utilization, resulting in poor corn yield-increasing effects, environmental pollution, and potential harm to human and animal health.

[0004] Therefore, how to provide a high-yield corn cultivation method to solve the technical problems of unreasonable fertilizer application and low fertilizer efficiency in the prior art is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The purpose of the present invention is to provide a high-yield corn cultivation method.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: The present invention provides a high-yield corn cultivation method, comprising the following steps: (1) Mix corn with a coating agent for coating and then plant it; The coating agent comprises the following components in parts by weight: 6-10 parts of composite bacterial agent, 2-3 parts of sodium alginate, 5-7 parts of polyvinyl alcohol, 0.4-0.8 parts of gelatin, 0.2-0.4 parts of alkaline scarlet, and 0.6-0.9 parts of sodium benzoate; (2) Spray plant growth regulators once during the jointing stage, trumpet stage, and tasseling and silking stage; The plant growth regulator comprises the following components in parts by weight: 1-3 parts of ethephon, 3-5 parts of uniconazole, 3-5 parts of melatonin, 7-11 parts of polyaspartic acid, 6-10 parts of gamma-polyglutamic acid, 3-7 parts of sodium nitrophenolate, and 20-30 parts of a traditional Chinese medicine extract; (3) Harvest corn when it is fully mature.

[0007] Preferably, the composite bacterial agent in step (1) comprises: Bacillus velez, Streptomyces gardneri, Pyrrosporium lilacinum, Bacillus thuringiensis and Metarhizium anisopliae.

[0008] Preferably, the mass ratio of Bacillus velez, Streptomyces gardneri, Pyrrosporium lilacinum, Bacillus thuringiensis and Metarhizium anisopliae is 12-16:8-12:7-11:6-10:3-7.

[0009] Preferably, the bacterial content of Bacillus Velezii, Streptomyces gardneri, Pyrrosporium lilacinum, Bacillus thuringiensis and Metarhizium anisopliae is 500 million to 700 million per gram.

[0010] Preferably, the preparation method of the coating agent in step (1) is: sodium alginate, polyvinyl alcohol and gelatin are added into 80-90°C water and mixed, and after cooling to 40-45°C, alkaline scarlet and sodium benzoate are added, and then the composite bacterial agent is added to obtain the coating agent.

[0011] Preferably, in step (1), the mass ratio of corn to coating agent is 1:8-12.

[0012] Preferably, the Chinese medicine extract in step (2) comprises the following components in parts by weight: 22-26 parts of polygonatum, 20-24 parts of sophora flavescens, 17-21 parts of astragalus, 15-19 parts of perilla leaves, 14-18 parts of scutellaria baicalensis, 12-16 parts of purslane, 10-14 parts of phellodendron amurense, 10-14 parts of ginkgo leaves, and 7-11 parts of asarum.

[0013] Preferably, the preparation method of the Chinese medicine extract in step (2) is: mixing polygonatum, sophora flavescens, astragalus, perilla leaf, scutellaria baicalensis, purslane, phellodendron amurense, ginkgo leaf, and asarum to obtain material 1; mixing material 1 with water in a mass ratio of 1:3-5 and boiling for 2.5-3.5 hours, and filtering to obtain a filtrate, which is the Chinese medicine extract.

[0014] Preferably, the preparation method of the plant growth regulator in step (2) is: mixing ethephon, uniconazole, melatonin, polyaspartic acid, γ-polyglutamic acid, sodium nitrophenolate and a traditional Chinese medicine extract to obtain material 2; and mixing material 2 with water in a mass ratio of 1:20-25 to obtain the plant growth regulator.

[0015] Preferably, the spraying amount of the plant growth regulator in step (2) is 20-30 kg / mu.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides supplementary nutrient elements for corn growth and enhances the stress resistance of corn plants by means of adding plant growth regulators at different growth stages of corn. At the same time, the plant growth regulators also have the effect of preventing and controlling diseases and insect pests.

[0017] The seed coating agent used in the present invention is a microbial preparation. Bacillus Velezii has antagonism to pathogenic bacteria, and has the characteristics of fast reproduction speed and large spore production. Therefore, it has excellent prevention and control effects on corn soil-borne diseases, and also has a promoting effect on the growth of corn seeds. Metarhizium anisopliae can induce insects to produce green muscardine disease, and form repeated infection in the population, so as to achieve the purpose of pest control. Pseudomonas lilacinus mainly kills pests by producing bacteriocins, can control a variety of pests, and is harmless to the environment and human body. Bacillus thuringiensis mainly acts through the digestive system of pests. Although it takes a long time to take effect, the insect-proof effect lasts for a long time. Streptomyces gardneri has an excellent promoting effect on the growth of corn seeds.

[0018] Among the plant growth regulators used in the present invention, Perilla leaf contains luteolin, Ginkgo leaf contains proanthocyanidins, which have a good effect of enhancing stress resistance for corn, and Sophora flavescens contains matrine, which can not only be used as an insecticide to resist various pests, but also can be used as an antibacterial agent to prevent and treat various diseases. Matrine can promote plant growth, improve the disease and insect resistance of crops, enhance the stress resistance of crops, and cope with adverse environments. Astragalus contains rich nutrients to supply corn plants. Polygonatum, Scutellaria baicalensis, Portulaca oleracea, Phellodendron chinense, Ginkgo leaf and Asarum contain bactericidal ingredients, which have the effect of preventing and treating corn diseases and insect pests.

[0019] The polyaspartic acid added in the present invention belongs to a fertilizer synergist. It has a chelating effect on metal ions. Polyaspartic acid can enrich nitrogen, phosphorus, potassium and trace elements to supply plants, so that crops can use fertilizers more effectively and increase the yield of crops. γ-Polyglutamic acid can effectively improve the dissolution, storage, transportation and absorption of fertilizers, prevent sulfate, phosphate, oxalate and metal elements from producing precipitation, so that crops can more effectively absorb phosphorus, magnesium and trace elements in the soil, and promote the development of crop roots. Sodium nitrophenolate is a powerful cell activator. After contacting with plants, it can quickly penetrate into the plant body, promote the protoplasm flow of cells, and improve cell vitality.

[0020] The high-yield corn cultivation method provided by the present invention can effectively promote the growth of corn, significantly increase the yield of corn, and has excellent technical effects of preventing and controlling corn diseases and insect pests. DETAILED DESCRIPTION

[0021] The present invention provides a high-yield corn cultivation method, comprising the following steps: (1) Mix corn with a coating agent for coating and then plant it; The coating agent comprises the following components in parts by mass: 6-10 parts of composite bacteria agent, 2-3 parts of sodium alginate, 5-7 parts of polyvinyl alcohol, 0.4-0.8 parts of gelatin, 0.2-0.4 parts of basic scarlet, and 0.6-0.9 parts of sodium benzoate; preferably, 7-9 parts of composite bacteria agent, 3 parts of sodium alginate, 6 parts of polyvinyl alcohol, 0.5-0.7 parts of gelatin, 0.3 parts of basic scarlet, and 0.7-0.8 parts of sodium benzoate; further preferably, 8 parts of composite bacteria agent, 3 parts of sodium alginate, 6 parts of polyvinyl alcohol, 0.6 parts of gelatin, 0.3 parts of basic scarlet, and 0.8 parts of sodium benzoate.

[0022] (2) Spray plant growth regulators during the jointing stage, trumpet stage, and tasseling and silking stage; The plant growth regulator comprises the following components in parts by weight: 1-3 parts of ethephon, 3-5 parts of uniconazole, 3-5 parts of melatonin, 7-11 parts of polyaspartic acid, 6-10 parts of γ-polyglutamic acid, 3-7 parts of sodium nitrophenolate, and 20-30 parts of a traditional Chinese medicine extract; preferably, 2 parts of ethephon, 4 parts of uniconazole, 4 parts of melatonin, 8-10 parts of polyaspartic acid, 7-9 parts of γ-polyglutamic acid, 4-6 parts of sodium nitrophenolate, and 22-28 parts of a traditional Chinese medicine extract; further preferably, 2 parts of ethephon, 4 parts of uniconazole, 4 parts of melatonin, 9 parts of polyaspartic acid, 8 parts of γ-polyglutamic acid, 5 parts of sodium nitrophenolate, and 24-26 parts of a traditional Chinese medicine extract; more preferably, 2 parts of ethephon, 4 parts of uniconazole, 4 parts of melatonin, 9 parts of polyaspartic acid, 8 parts of γ-polyglutamic acid, 5 parts of sodium nitrophenolate, and 25 parts of a traditional Chinese medicine extract.

[0023] (3) Harvest corn when it is fully mature.

[0024] In the present invention, the composite bacterial agent in step (1) comprises: Bacillus velezensis, Streptomyces gardneri, Porphyromonas lilacinus, Bacillus thuringiensis and Metarhizium anisopliae.

[0025] In the present invention, the mass ratio of Bacillus velez, Streptomyces gardnera, Porphyromonas lilacinus, Bacillus thuringiensis and Metarhizium anisopliae is 12-16:8-12:7-11:6-10:3-7; preferably 13-15:9-11:8-10:7-9:4-6; further preferably 14:10:9:8:5.

[0026] In the present invention, the bacterial content of Bacillus Velezii, Streptomyces gardneri, Porphyromonas lilacinus, Bacillus thuringiensis and Metarhizium anisopliae is 500 million to 700 million / g, preferably 600 million / g.

[0027] In the present invention, the preparation method of the coating agent in step (1) is: sodium alginate, polyvinyl alcohol and gelatin are added to 80-90°C water and mixed, and after cooling to 40-45°C, alkaline scarlet and sodium benzoate are added, and the composite bacterial agent is added to obtain the coating agent; preferably, the water temperature is 82-88°C; more preferably, 84-86°C; and more preferably, 85°C.

[0028] In the present invention, it is preferred to add basic scarlet and sodium benzoate after cooling to 41-44°C; more preferably 43°C.

[0029] In the present invention, the mass ratio of the corn to the coating agent in step (1) is 1:8-12; preferably 1:9-11; and more preferably 1:10.

[0030] In the present invention, the Chinese medicine extract in step (2) comprises the following components in parts by weight: 22-26 parts of polygonatum, 20-24 parts of sophora flavescens, 17-21 parts of astragalus, 15-19 parts of perilla leaves, 14-18 parts of scutellaria, 12-16 parts of purslane, 10-14 parts of phellodendron, 10-14 parts of ginkgo leaves, and 7-11 parts of asarum; preferably 23-25 ​​parts of polygonatum, 21-25 parts of sophora flavescens .... 23 parts, 18-20 parts of astragalus, 16-18 parts of perilla leaves, 15-17 parts of scutellaria, 13-15 parts of purslane, 11-13 parts of phellodendron, 11-13 parts of ginkgo leaves, and 8-10 parts of asarum; more preferably 24 parts of polygonatum, 22 parts of sophora flavescens, 19 parts of astragalus, 17 parts of perilla leaves, 16 parts of scutellaria, 14 parts of purslane, 12 parts of phellodendron, 12 parts of ginkgo leaves, and 9 parts of asarum.

[0031] In the present invention, the preparation method of the Chinese medicine extract in step (2) is: mix polygonatum, sophora flavescens, astragalus, perilla leaf, scutellaria baicalensis, purslane, phellodendron amurense, ginkgo leaf and asarum to obtain material 1; mix the material 1 with water in a mass ratio of 1:3-5 and boil for 2.5-3.5 hours, and filter to obtain a filtrate, which is the Chinese medicine extract; preferably, mix the material 1 with water in a mass ratio of 1:4 and boil for 3 hours.

[0032] In the present invention, the preparation method of the plant growth regulator in step (2) is: ethephon, uniconazole, melatonin, polyaspartic acid, γ-polyglutamic acid, sodium nitrophenolate and a traditional Chinese medicine extract are mixed to obtain material 2; the material 2 is mixed with water in a mass ratio of 1:20-25 to obtain the plant growth regulator; preferably 1:21-24; more preferably 1:22-23; more preferably 1:23.

[0033] In the present invention, the spraying amount of the plant growth regulator in step (2) is 20-30 kg / mu; preferably 22-28 kg / mu; more preferably 24-26 kg / mu; and more preferably 25 kg / mu.

[0034] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention. Example 1

[0035] A high-yield corn cultivation method, the steps are as follows: (1) Mix corn and coating agent in a mass ratio of 1:12 for coating treatment, and then plant; The coating agent includes the following components in parts by mass: 10 parts of composite bacterial agent, 3 parts of sodium alginate, 7 parts of polyvinyl alcohol, 0.8 parts of gelatin, 0.4 parts of alkaline scarlet, and 0.9 parts of sodium benzoate; the composite bacterial agent includes: Bacillus velezensis, Streptomyces gardneri, Pyrrosia lilacinus, Bacillus thuringiensis and Metarhizium anisopliae, with a mass ratio of 16:12:11:10:7; the bacterial content is 700 million / g.

[0036] The preparation method of the coating agent is as follows: sodium alginate, polyvinyl alcohol and gelatin are added into 90°C water and mixed, and after cooling to 45°C, alkaline scarlet and sodium benzoate are added, and then a composite bacterial agent is added to obtain the coating agent.

[0037] (2) Spray plant growth regulators at 30 kg / mu during the jointing stage, trumpet stage and tasseling and silking stage; The plant growth regulator comprises the following components in parts by weight: 3 parts of ethephon, 5 parts of uniconazole, 5 parts of melatonin, 11 parts of polyaspartic acid, 10 parts of γ-polyglutamic acid, 7 parts of sodium nitrophenolate, and 30 parts of traditional Chinese medicine extract; The preparation method of the traditional Chinese medicine extract is as follows: 26 parts of polygonatum, 24 parts of sophora flavescens, 21 parts of rhizoma scutellariae, 19 parts of perilla leaves, 18 parts of scutellaria baicalensis, 16 parts of purslane, 14 parts of phellodendron amurense, 14 parts of ginkgo leaves, and 11 parts of asarum are mixed to obtain material 1; the material 1 is mixed with water at a mass ratio of 1:5 and boiled for 3.5 hours, and the filtrate is filtered to obtain the traditional Chinese medicine extract.

[0038] The preparation method of the plant growth regulator comprises the following steps: mixing ethephon, uniconazole, melatonin, polyaspartic acid, gamma-polyglutamic acid, sodium nitrophenolate and a traditional Chinese medicine extractant to obtain material 2; and mixing material 2 with water at a mass ratio of 1:25 to obtain the plant growth regulator.

[0039] (3) Harvest corn when it is fully mature. Example 2

[0040] A high-yield corn cultivation method, the steps are as follows: (1) Mix corn and coating agent in a mass ratio of 1:8 for coating treatment, and then plant; The coating agent includes the following components in parts by mass: 6 parts of composite bacterial agent, 2 parts of sodium alginate, 5 parts of polyvinyl alcohol, 0.4 parts of gelatin, 0.2 parts of alkaline scarlet, and 0.6 parts of sodium benzoate; the composite bacterial agent includes: Bacillus velezensis, Streptomyces gardneri, Pyrrosia lilacinus, Bacillus thuringiensis and Metarhizium anisopliae, with a mass ratio of 12:8:7:6:3; the bacterial content is 500 million / g.

[0041] The preparation method of the coating agent is as follows: sodium alginate, polyvinyl alcohol and gelatin are added into 80°C water and mixed, and after cooling to 40°C, alkaline scarlet and sodium benzoate are added, and then a composite bacterial agent is added to obtain the coating agent.

[0042] (2) Spray plant growth regulators at 20 kg / mu during the jointing stage, trumpet stage and tasseling and silking stage; The plant growth regulator comprises the following components in parts by weight: 1 part of ethephon, 3 parts of uniconazole, 3 parts of melatonin, 7 parts of polyaspartic acid, 6 parts of gamma-polyglutamic acid, 3 parts of sodium nitrophenolate, and 20 parts of traditional Chinese medicine extract; The preparation method of the traditional Chinese medicine extract is as follows: 26 parts of polygonatum, 24 parts of sophora flavescens, 21 parts of astragalus, 15 parts of perilla leaves, 18 parts of scutellaria, 16 parts of purslane, 14 parts of phellodendron, 14 parts of ginkgo leaves, and 11 parts of asarum are mixed to obtain material 1; the material 1 is mixed with water at a mass ratio of 1:5 and boiled for 3.5 hours, and the filtrate is filtered to obtain the traditional Chinese medicine extract.

[0043] The preparation method of the plant growth regulator comprises the following steps: mixing ethephon, uniconazole, melatonin, polyaspartic acid, gamma-polyglutamic acid, sodium nitrophenolate and a traditional Chinese medicine extractant to obtain material 2; and mixing material 2 with water at a mass ratio of 1:25 to obtain the plant growth regulator.

[0044] (3) Harvest corn when it is fully mature. Example 3

[0045] A high-yield corn cultivation method, the steps are as follows: (1) Mix corn and coating agent in a mass ratio of 1:10 for coating treatment, and then plant; The coating agent includes the following components in parts by mass: 8 parts of composite bacterial agent, 3 parts of sodium alginate, 6 parts of polyvinyl alcohol, 0.6 parts of gelatin, 0.3 parts of alkaline scarlet, and 0.8 parts of sodium benzoate; the composite bacterial agent includes: Bacillus velez, Streptomyces gardneri, Pyrrosia lilacinus, Bacillus thuringiensis and Metarhizium anisopliae, with a mass ratio of 14:10:9:8:5; the bacterial content is 600 million / g.

[0046] The preparation method of the coating agent is as follows: sodium alginate, polyvinyl alcohol and gelatin are added into 85°C water and mixed, and after cooling to 43°C, alkaline scarlet and sodium benzoate are added, and then a composite bacterial agent is added to obtain the coating agent.

[0047] (2) Spray plant growth regulators at 25 kg / mu during the jointing stage, trumpet stage and tasseling and silking stage; The plant growth regulator comprises the following components in parts by weight: 2 parts of ethephon, 4 parts of uniconazole, 4 parts of melatonin, 9 parts of polyaspartic acid, 8 parts of gamma-polyglutamic acid, 5 parts of sodium nitrophenolate, and 25 parts of a traditional Chinese medicine extract; The preparation method of the traditional Chinese medicine extract is as follows: 24 parts of polygonatum, 22 parts of sophora flavescens, 19 parts of astragalus, 17 parts of perilla leaves, 16 parts of scutellaria, 14 parts of purslane, 12 parts of phellodendron, 12 parts of ginkgo leaves, and 9 parts of asarum are mixed to obtain material 1; the material 1 is mixed with water in a mass ratio of 1:4 and boiled for 3 hours, and the filtrate is filtered to obtain the traditional Chinese medicine extract.

[0048] The preparation method of the plant growth regulator comprises the following steps: mixing ethephon, uniconazole, melatonin, polyaspartic acid, gamma-polyglutamic acid, sodium nitrophenolate and a traditional Chinese medicine extractant to obtain material 2; and mixing material 2 with water at a mass ratio of 1:23 to obtain the plant growth regulator.

[0049] (3) Harvest corn when it is fully mature. Example 4

[0050] An experimental plot was selected to plant corn. The corn variety selected was Denghai 605. The experimental plots were divided and three plots were randomly treated in each experimental group.

[0051] Among them, the cultivation method of Example 3 was used as the experimental group; Control group 1, other methods are the same as Example 3, the only difference is that the coating agent in the prior art (Changde Dingcheng District Xingxiang Plant Protection Co., Ltd., the use method is in accordance with the instructions) is selected to replace the coating agent prepared in Example 3.

[0052] Control group 2: other methods are the same as those in Example 3, except that the composite bacterial agent in the coating agent is replaced with an equal amount of distilled water.

[0053] Control group 3, other methods are the same as Example 3, the only difference is that the plant growth regulator is replaced by a prior art product (Lantian Agricultural Amine Fresh Ethephon, Zibo Meishou Agricultural Technology Co., Ltd., used according to the instructions) Control group 4: other methods were the same as those in Example 3, except that polyaspartic acid, γ-polyglutamic acid, and sodium nitrophenolate were replaced by an equal amount of distilled water; Control group 5: other methods are the same as those in Example 3, except that the polygonatum sibiricum, sophora flavescens and scutellaria baicalensis are replaced with an equal amount of distilled water.

[0054] Except for the different use of corn coating agents or plant growth regulators in each test group, other growth management methods were the same. During the corn growth management period, the prevention efficiency of corn sheath blight and the incidence of cutworms were investigated, and the results were averaged, as shown in Table 1.

[0055] After the corn was harvested, the corn yield was counted and the results were averaged, as shown in Table 2.

[0056] Table 1 Questionnaire on the effect of corn disease control

[0057] As shown in Table 1, the cultivation method provided by the present invention has excellent control effects on both sheath blight and cutworms. From the data of the control group, it can be seen that the use of the coating agent should be appropriate, otherwise the incidence of cutworms will increase significantly, and only by using the complete coating agent formula of the present invention can the technical effect of effectively preventing and controlling cutworms be achieved. Plant growth regulators have excellent control effects on sheath blight, and if some of the components are discarded, the control effects of plant growth regulators on sheath blight will be significantly affected.

[0058] Table 2 Corn yield

[0059] From the contents recorded in Table 2, it can be seen that the method of the present invention can significantly increase the yield of corn, especially whether the plant growth regulator is used has the greatest impact on the yield of corn. Therefore, the plant growth regulator provided by the present invention has an excellent growth-promoting effect, and it also has the effect of preventing and treating plant diseases. One dose has multiple uses, and can significantly increase the income of farmers.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-yield corn cultivation method, characterized in that: The steps include: (1) Mix corn with a coating agent for coating and then plant it; The coating agent comprises the following components in parts by weight: 6-10 parts of composite bacterial agent, 2-3 parts of sodium alginate, 5-7 parts of polyvinyl alcohol, 0.4-0.8 parts of gelatin, 0.2-0.4 parts of alkaline scarlet, and 0.6-0.9 parts of sodium benzoate; (2) Spray plant growth regulators during the jointing stage, trumpet stage, and tasseling and silking stage; The plant growth regulator comprises the following components in parts by weight: 1-3 parts of ethephon, 3-5 parts of uniconazole, 3-5 parts of melatonin, 7-11 parts of polyaspartic acid, 6-10 parts of gamma-polyglutamic acid, 3-7 parts of sodium nitrophenolate, and 20-30 parts of a traditional Chinese medicine extract; (3) Harvest corn when it is fully mature.

2. A high-yield corn cultivation method according to claim 1, characterized in that: The composite bacterial agent in step (1) comprises: Bacillus velez, Streptomyces gardneri, Pyrrosporium lilacinum, Bacillus thuringiensis and Metarhizium anisopliae.

3. A high-yield corn cultivation method according to claim 2, characterized in that: The mass ratio of the Bacillus velez, Streptomyces gardneri, Porphyromonas lilacinus, Bacillus thuringiensis and Metarhizium anisopliae is 12-16:8-12:7-11:6-10:3-7.

4. A high-yield corn cultivation method according to claim 2 or 3, characterized in that: The bacterial contents of the Bacillus Velez, Streptomyces gardneri, Pyrrosporium lilacinum, Bacillus thuringiensis and Metarhizium anisopliae are all 500 million to 700 million per gram.

5. The high-yield corn cultivation method according to claim 1, characterized in that: The preparation method of the coating agent in step (1) is as follows: sodium alginate, polyvinyl alcohol and gelatin are added into 80-90°C water and mixed, and after cooling to 40-45°C, alkaline scarlet and sodium benzoate are added, and then a composite bacterial agent is added to obtain the coating agent.

6. A high-yield corn cultivation method according to claim 1 or 5, characterized in that: The mass ratio of the corn to the coating agent in step (1) is 1:8-12.

7. The high-yield corn cultivation method according to claim 1, characterized in that: The Chinese medicine extract in step (2) comprises the following components in parts by weight: 22-26 parts of polygonatum, 20-24 parts of sophora flavescens, 17-21 parts of astragalus, 15-19 parts of perilla leaves, 14-18 parts of scutellaria, 12-16 parts of purslane, 10-14 parts of phellodendron, 10-14 parts of ginkgo leaves, and 7-11 parts of asarum.

8. A high-yield corn cultivation method according to claim 7, characterized in that: The preparation method of the Chinese medicine extract in step (2) is as follows: polygonatum, sophora flavescens, astragalus, perilla leaf, scutellaria baicalensis, purslane, phellodendron amurense, ginkgo leaf and asarum are mixed to obtain material 1; the material 1 is mixed with water in a mass ratio of 1:3-5 and boiled for 2.5-3.5 hours, and the filtrate is filtered to obtain the Chinese medicine extract.

9. A high-yield corn cultivation method according to claim 1 or 7, characterized in that: The preparation method of the plant growth regulator in step (2) is as follows: ethephon, uniconazole, melatonin, polyaspartic acid, γ-polyglutamic acid, sodium nitrophenolate and a traditional Chinese medicine extract are mixed to obtain material 2; and material 2 is mixed with water in a mass ratio of 1:20-25 to obtain the plant growth regulator.

10. The high-yield corn cultivation method according to claim 1, characterized in that: The spraying amount of the plant growth regulator in step (2) is 20-30 kg / mu.

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