Stress-resistant cultivation method for promoting banana root growth

Abstract

The invention discloses a stress-resistant cultivation method for promoting banana root growth, which comprises the following steps: preparing a first mixed solution from fludioxonil and metalaxyl-M in proportion, and mixing bacillus amyloliquefaciens, a stabilizer, a fluopyram nematicide and the first mixed solution in proportion to prepare a second mixed solution; mixing bacillus amyloliquefaciens and the first mixed solution in proportion to prepare a third mixed solution; 3-7 days after banana plants are transplanted or in the seedling stage of bananas, the second mixed solution is used for first-time root irrigation or drip irrigation; 25-30 days after the first-time root irrigation or drip irrigation is completed, second-time root irrigation or drip irrigation is conducted through second mixed liquid; in the flower bud differentiation period, third mixed liquid is used for third-time root irrigation or drip irrigation; wherein the stabilizer is a substance capable of protecting the activity of bacillus amyloliquefaciens. According to the method, the growth of banana root systems is promoted while the soil is improved, and meanwhile, the invasion of nematodes can be effectively prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of banana planting, and particularly relates to a stress-resistant cultivation method for promoting the growth of banana root systems. Background Art

[0002] The banana root system not only absorbs water and nutrients, but also stabilizes the banana plant to prevent it from falling over. A healthy root system can ensure that the banana plant remains stable during its growth and avoids damage from external factors such as wind and rain. The health of the banana root system directly affects the stress resistance of the banana plant. When the root system is damaged or its function declines, the banana plant's ability to absorb water and nutrients will also decrease, resulting in poor plant growth and greater susceptibility to drought, disease and other adversities. On the contrary, a healthy root system can enhance the stress resistance of the banana plant and enable it to better adapt to various environmental conditions.

[0003] Soil conditions have a huge impact on the growth and development of banana roots. Problems such as soil compaction, insufficient fertility, and pests and diseases can cause root growth and development to stagnate or necrotize. Therefore, regular root maintenance and improved soil conditions are essential for the healthy growth of bananas. In order to promote better growth of banana roots, the existing banana cultivation and management methods are mostly to spray different agents or bacterial agents on the plants in a specific period after mixing them in a specific ratio. However, due to some physical or chemical changes after mixing multiple agents or bacterial agents, the active ingredients in the agents or bacterial agents are decomposed, which ultimately leads to poor maintenance effects on the plant roots after spraying.

[0004] Therefore, it is urgent to develop a stress-resistant cultivation method that can effectively promote the growth of banana root system. Summary of the invention

[0005] An object of the present invention is to solve at least the above-mentioned drawbacks and to provide advantages which will be described hereinafter.

[0006] Another object of the present invention is to provide a stress-resistant cultivation method that can reduce the incidence of banana diseases and promote the growth of banana root systems.

[0007] Another object of the present invention is to provide a stress-resistant cultivation method that can effectively increase the banana budding rate and promote the growth of banana root system.

[0008] In order to achieve these purposes and other advantages of the present invention, a stress-resistant cultivation method for promoting the growth of banana root system is provided, comprising: Equal volumes of 25 g / L fludioxonil and 10 g / L metalaxyl-M were taken and mixed according to volume to obtain a first mixed solution.

[0009] 700 parts of Bacillus amyloliquefaciens QST713 bacterial agent, 8-9 parts of stabilizer, 25 parts of 41.7% fluopyram nematicide and 150 parts of the first mixed solution were mixed according to volume to obtain a second mixed solution.

[0010] 700 parts of the Bacillus amyloliquefaciens QST713 bacterial agent and 150 parts of the first mixed solution were mixed according to volume to obtain a third mixed solution.

[0011] 3 to 7 days after the banana plants are transplanted or in the banana seedling stage, use the second mixed solution at a rate of 875 ml / mu for the first root irrigation or drip irrigation.

[0012] 25 to 30 days after the first root irrigation or drip irrigation is completed, use the second mixed solution at a rate of 875 ml / mu for the second root irrigation or drip irrigation.

[0013] During the flower bud differentiation period, use the third mixed solution at a rate of 850 ml / mu for the third root irrigation or drip irrigation.

[0014] The stabilizer is a substance that can protect the activity of the Bacillus amyloliquefaciens QST713 bacterial agent.

[0015] In the above scheme, by preparing the second mixed solution and applying it after banana transplanting or in the seedling stage, the soil is improved and the growth of banana root system is promoted, and the damage of nematodes can be effectively prevented. And the second application 25 to 30 days after the first application further consolidates the root system and disease resistance of banana plants, laying a solid foundation for subsequent growth and development.

[0016] Secondly, by preparing the third mixed solution and applying it during the flower bud differentiation period, the health and growth vitality of the root system can be maintained while promoting the differentiation of flower buds.

[0017] In addition, the addition of the stabilizer effectively protects the activity of the Bacillus amyloliquefaciens QST713 bacterial agent, thereby better ensuring that the active ingredients in the second mixed solution can stably act on improving the soil, creating a good environment for the growth of banana roots, and enhancing the ability of banana roots to grow stably in adverse environments.

[0018] Preferably, when the volume V of the second mixed solution is ≤ 5 liters: trehalose is selected as the stabilizer, and the added amount m1 thereof is in the range of 50 g ≤ m1 ≤ 100 g; or mannitol is selected as the stabilizer, and the added amount m2 thereof is in the range of 60 g ≤ m2 ≤ 125 g.

[0019] When 5L<V≤10L: select trehalose, and the added amount m1 ranges from 100g<m1≤200g; or select mannitol, and the added amount m2 ranges from 120g<m2≤250g.

[0020] When 10L<V≤20L: the range of trehalose addition amount m1 is 200g<m1≤400g; the range of mannitol addition amount m2 is 240g<m2≤500g.

[0021] When V>20L: the amount of trehalose added m1 can be increased by 20g of trehalose for every 1L of mixed solution added; the amount of mannitol added m2 can be increased by 25g of mannitol for every 1L of mixed solution added.

[0022] In the above scheme, according to the different volumes of the mixed solution, accurately selecting trehalose or mannitol as a stabilizer and determining the appropriate amount of addition can effectively protect the activity of Bacillus amyloliquefaciens QST713 bacterial agent and improve the stability of the bacteria in the mixed solution. The stable activity of the bacterial agent helps to better play its role in improving the soil microecology and enhancing the disease resistance of the plant, thereby creating a good environment for the growth of banana roots, ensuring that the banana plants absorb the active ingredients in different mixed solutions under adverse conditions, and promoting better growth of rubber plants.

[0023] Preferably, the fluopyram nematicide comprises treating fluopyram with cyclodextrin inclusion, specifically comprising the following steps: β-cyclodextrin was selected as the inclusion host.

[0024] Fluopyram and β-cyclodextrin are mixed in a molar ratio of 1:1 to 1:3.

[0025] In an aqueous solution environment at a temperature of 40° C. to 60° C. and a pH value of 6.5 to 7.5, the stirring reaction is continued for 2 to 4 hours at a stirring speed of 150 to 250 revolutions per minute to allow fluopyram to fully react with β-cyclodextrin to form an inclusion complex.

[0026] The included fluopyram-β-cyclodextrin inclusion complex is added into the first mixed solution.

[0027] In the above scheme, the inclusion treatment of fluopyram with β-cyclodextrin can improve its stability and reduce the influence of environmental factors on its efficacy. The appropriate molar ratio and reaction conditions can ensure a good inclusion effect. The inclusion fluopyram can exist more stably in the mixed solution, prolong its control time for nematodes, enhance the control effect for nematodes, better protect the banana root system from nematode damage, and promote the healthy growth of the banana root system.

[0028] Preferably, the stress-resistant cultivation method for promoting the growth of banana root system further comprises laying a mulch film around the banana plants, and the time for laying the mulch film is from November to May of the following year.

[0029] In the above scheme, specifically, the ground film adopts a polyethylene ground film with a thickness of 0.008-0.012 mm, a light transmittance of not less than 80%, and a heat preservation rate of not less than 70%. When laying, the ground film fits tightly to the ground, and the edge of the ground film is compacted with soil to form a soil pressing belt with a width of 8-12 cm; the laying time of the ground film is completed 1-2 days before the first root irrigation or drip irrigation; the ground film is laid flat to avoid wrinkles. When the second root irrigation or drip irrigation is carried out 25-30 days after the first root irrigation or drip irrigation, the fit of the ground film is checked. If the ground film is found to be partially loose, it is adjusted and repaired in time. By laying the ground film to protect bananas from November to May of the following year, the heat loss of the soil and the evaporation of water are effectively reduced, and the growth of weeds and the invasion of pests can be prevented, providing a more suitable environment for the growth of bananas, and at the same time, the harm of pests and diseases to banana plants can be reduced. Appropriate ground film thickness, light transmittance and heat preservation rate can ensure that the ground film has a good heat preservation and moisture retention effect. The tightly fitting laying method and regular inspection and repair can ensure that the mulch continues to create a suitable temperature and humidity environment for the banana roots, promote root growth, and enhance the plant's resistance to adverse environments such as low temperatures.

[0030] Preferably, the stress-resistant cultivation method for promoting the growth of banana root system further comprises laying a sky film above the banana plants, and the time for laying the sky film is from December to March of the following year.

[0031] In the above scheme, specifically, a polyethylene film with a thickness of 0.03~0.05 mm and a light transmittance of 70%~80% is selected as the sky film. A support structure is built above the banana planting area. Bamboo poles or steel pipes can be used to build a frame. The frame height is determined according to the height of the banana plant, generally 50~80 cm higher than the top of the banana plant, to ensure that there is enough space for the banana plant to grow without affecting the sky film covering effect. Unfold the sky film and cover it on the built frame. The edge of the sky film should exceed the edge of the frame by 30~50 cm for fixing. Use ropes or clips to fix the edge of the sky film to the frame to ensure that the sky film is firmly fixed and will not be blown up by the wind. During the sky film covering process, ensure that the sky film is flat and not damaged. If damage is found, use tape to repair it in time. By laying sky film on bananas from December to March of the following year, the growth environment temperature of banana plants can be effectively increased and the risk of frost damage to banana plants can be reduced. At the same time, the reflection and scattering of sunlight by the sky film can increase the light intensity of banana leaves, promote photosynthesis, and increase the accumulation of organic matter.

[0032] Preferably, the stress-resistant cultivation method for promoting the growth of banana root system further comprises laying a sky film above the banana plants from December to March of the following year; and laying a ground film around the banana plants from November to May of the following year.

[0033] In the above scheme, by laying sky film and ground film to protect bananas from December to March of the following year, a more suitable environment is created for banana plants, providing favorable conditions for the winter growth of banana plants.

[0034] Preferably, the stress-resistant cultivation method for promoting banana root growth further comprises: 80 g / L of N solution, 80 g / L of P2O5 aqueous solution and 40 g / L of K2O aqueous solution were taken and mixed in equal volumes to obtain a fourth mixed solution.

[0035] A humic acid aqueous solution with a concentration of not less than 30 g / L, a fourth mixed solution with a concentration of not less than 200 g / L, and an organic matter aqueous solution with a concentration of 150 g / L are respectively taken and mixed to obtain a fifth mixed solution.

[0036] From November to March of the following year, use the fifth mixed solution to irrigate the roots of banana plants once every 25 to 50 days.

[0037] In the above scheme, the fifth mixed solution is prepared and used to irrigate the roots of banana plants from September to January, thereby providing the rubber with nutrients such as nitrogen, phosphorus and potassium required for growth, providing sufficient nutrition for the banana plants, improving the stress resistance of bananas, and reducing the impact of diseases and insect pests on bananas in cold weather.

[0038] Preferably, the pH of the fifth mixed solution is 5.0, and the concentration of insoluble matter in the solution is not less than 50 g / L.

[0039] The invention discloses an adversity-resistant cultivation method for promoting the growth of banana root system and its application in preventing banana wilt disease.

[0040] Advantages of the present invention: Firstly, the stress-resistant cultivation method for promoting banana root growth of the present invention prepares the second mixed solution and applies it after banana transplanting or in the seedling stage, thereby improving the soil and promoting the growth of banana root system, and can also effectively prevent the damage of nematodes. The second mixed solution is applied again 25 to 30 days after the first application, further consolidating the root system and disease resistance of the banana plant, and laying a solid foundation for subsequent growth and development.

[0041] Secondly, the stress-resistant cultivation method for promoting banana root growth of the present invention further prepares the third mixed solution and applies it during the flower bud differentiation period, thereby maintaining the health and growth vitality of the root system and promoting the flower bud differentiation.

[0042] In addition, the stress-resistant cultivation method for promoting banana root growth of the present invention effectively protects the activity of the Bacillus amyloliquefaciens QST713 bacterial agent by adding a stabilizer, thereby better ensuring that the effective ingredients in the second mixed solution and the third mixed solution can stably act on improving the soil, creating a good environment for the growth of banana roots, and enhancing the ability of banana roots to grow stably in adverse environments.

[0043] In addition, the stress-resistant cultivation method for promoting banana root growth of the present invention accurately selects trehalose or mannitol as a stabilizer and determines the appropriate amount of addition according to the different volumes of the mixed solution, which can effectively protect the activity of the Bacillus amyloliquefaciens QST713 bacterial agent and improve the stability of the bacteria in the mixed solution. The stable bacterial agent activity helps to better play its role in improving soil microecology and enhancing plant disease resistance, thereby creating a good environment for banana root growth, ensuring that banana plants absorb active ingredients in different mixed solutions under adverse conditions, and promoting better growth of rubber plants.

[0044] In addition, the stress-resistant cultivation method for promoting banana root growth of the present invention adopts beta-cyclodextrin to carry out inclusion treatment on fluopyram, which can improve its stability and reduce the influence of environmental factors on its efficacy. Suitable molar ratio and reaction conditions can ensure good inclusion effect. Fluopyram after inclusion can exist more stably in the mixed solution, prolong its control time for nematodes, enhance the control effect for nematodes, better protect banana roots from nematode damage, and promote the healthy growth of banana roots.

[0045] In addition, the stress-resistant cultivation method for promoting root growth of bananas of the present invention effectively reduces the heat loss of soil and the evaporation of water by laying mulch film for protection of bananas from November to May of the following year, and can also prevent the growth of weeds and the invasion of pests, thereby providing a more suitable environment for the growth of bananas and reducing the harm of diseases and pests to banana plants.

[0046] In addition, the stress-resistant cultivation method for promoting banana root growth of the present invention effectively improves the growth environment temperature of banana plants and reduces the risk of frost damage to banana plants by laying a sky film for protection from December to March of the following year. At the same time, the reflection and scattering effect of the sky film on sunlight increases the light intensity of banana leaves, promotes photosynthesis, and increases the accumulation of organic matter.

[0047] In addition, the stress-resistant cultivation method for promoting root growth of bananas of the present invention prepares the fifth mixed solution and performs root irrigation treatment on banana plants from November to March of the following year, thereby providing the rubber with nutrient elements such as nitrogen, phosphorus and potassium required for growth, providing the banana plants with sufficient nutrition, improving the stress resistance of bananas, and reducing the impact of diseases and insect pests on bananas in cold weather. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below in conjunction with embodiments so that those skilled in the art can implement the invention with reference to the description.

[0052] Example 1 Stress-resistant cultivation methods to promote banana root growth include: Step 1: Take equal volumes of 25 g / L fludioxonil and 10 g / L metalaxyl-M respectively by volume and mix them to obtain a first mixed solution.

[0053] Step 2: 7 liters of Bacillus amyloliquefaciens QST713 agent, 100 g of trehalose, 0.25 liters of 41.7% fluopyram nematicide and 1.5 liters of the first mixed solution were mixed according to volume to obtain a second mixed solution.

[0054] Step 3: 3 to 7 days after the banana plants are transplanted or in the banana seedling stage, use the second mixed solution at a rate of 875 ml / mu for the first root irrigation or drip irrigation.

[0055] Step 4: 25 to 30 days after the first root irrigation or drip irrigation is completed, use the second mixed solution at a rate of 875 ml / mu for the second root irrigation or drip irrigation.

[0056] Step 5: Mix 7 liters of Bacillus amyloliquefaciens QST713 inoculant and 1.5 liters of the first mixed solution according to volume to obtain a third mixed solution.

[0057] Step 6. During the flower bud differentiation period, use the third mixed solution at a rate of 850 ml / mu for the third root irrigation or drip irrigation.

[0058] Example 2 Based on Example 1, step 2 is replaced by: Step 2: 41.7% fluopyram nematicide and β-cyclodextrin are mixed in a molar ratio of 1:1 to 1:3, and the mixture is stirred at a stirring speed of 150 to 250 revolutions per minute for 2 to 4 hours in an aqueous solution environment at a temperature of 40°C to 60°C and a pH value of 6.5 to 7.5, so that the fluopyram nematicide and β-cyclodextrin are fully reacted to form an inclusion complex; 7 liters of Bacillus amyloliquefaciens QST713 agent, 100 grams of trehalose, 0.25 liters of the inclusion complex of fluopyram nematicide and β-cyclodextrin, and 1.5 liters of the first mixed solution are mixed according to volume to obtain a second mixed solution.

[0059] Example 3 On the basis of Example 1, it also includes: Step 7: From November to May of the following year, lay ground film around the banana plants.

[0060] Among them, the ground film adopts polyethylene ground film with a thickness of 0.008~0.012 mm, a light transmittance of not less than 80%, and a thermal insulation rate of not less than 70%. When laying, the ground film fits tightly to the ground, and the edge of the ground film is compacted with soil to form a soil pressing belt with a width of 8~12 cm; the laying time of the ground film is 1~2 days before the first root irrigation or drip irrigation; the ground film is laid flat to avoid wrinkles. When the second root irrigation or drip irrigation is carried out 25~30 days after the first root irrigation or drip irrigation is completed, check the fit of the ground film. If the ground film is found to be partially loose, adjust and repair it in time.

[0061] Example 4 On the basis of Example 1, it also includes: Step 7: From December to March of the following year, lay a roof film on top of the banana plants.

[0062] Among them, polyethylene film with a thickness of 0.03~0.05 mm and a light transmittance of 70%~80% is selected as the sky film. A support structure is built above the banana planting area. Bamboo poles or steel pipes can be used to build a frame. The frame height is determined according to the height of the banana plant, generally 50~80 cm higher than the top of the banana plant, to ensure that there is enough space for the banana plant to grow without affecting the sky film covering effect. Unfold the sky film and cover it on the built frame. The edge of the sky film should exceed the edge of the frame by 30~50 cm for fixing. Use ropes or clips to fix the edge of the sky film to the frame to ensure that the sky film is firmly fixed and will not be blown up by the wind. During the sky film covering process, ensure that the sky film is flat and not damaged. If any damage is found, use tape to repair it in time.

[0063] Example 5 On the basis of Example 1, it also includes: Step 7: From December to March of the following year, lay the sky film above the banana plants; from November to May of the following year, lay the ground film around the banana plants.

[0064] Among them, the setting of the ground film is the same as that of Example 3, and the setting of the roof film is the same as that of Example 4.

[0065] Example 6 On the basis of Example 1, it also includes: Step 7: Take 80 g / L of N solution, 80 g / L of P2O5 aqueous solution and 40 g / L of K2O aqueous solution and mix them in equal volumes to obtain a fourth mixed solution.

[0066] Step eight, respectively take a humic acid aqueous solution with a concentration of not less than 30 g / L, a fourth mixed solution with a concentration of not less than 200 g / L, and an organic matter aqueous solution with a concentration of 150 g / L, and mix them to obtain a fifth mixed solution.

[0067] Step 9. During November to March of the following year, use the fifth mixed solution to irrigate the roots of banana plants once every 25 days.

[0068] Example 7 On the basis of Example 6, the invention further comprises: Step 10: From December to March of the following year, lay the sky film above the banana plants; from November to May of the following year, lay the ground film around the banana plants.

[0069] Among them, the setting of the ground film is the same as that of Example 3, and the setting of the roof film is the same as that of Example 4.

[0070] Example 8 Based on Example 7, step nine is replaced by: Step 9. During November to March of the following year, use the fifth mixed solution to irrigate the roots of banana plants once every 45 days.

[0071] Comparative Example 1 Banana cultivation methods include: Step 1: Take 80 g / L of N solution, 80 g / L of P2O5 aqueous solution and 40 g / L of K2O aqueous solution and mix them in equal volumes to obtain a fourth mixed solution.

[0072] Step eight, respectively take a humic acid aqueous solution with a concentration of not less than 30 g / L, a fourth mixed solution with a concentration of not less than 200 g / L, and an organic matter aqueous solution with a concentration of 150 g / L, and mix them to obtain a fifth mixed solution.

[0073] Step 9. During November to March of the following year, use the fifth mixed solution to irrigate the roots of banana plants once every 45 days.

[0074] Comparative Example 2 Banana cultivation methods include: Step 1: 3 to 7 days after the banana plants are transplanted or in the banana seedling stage, take 75 ml of 25 g / L fludioxonil, 75 ml of 10 g / L metalaxyl, 700 ml of Bacillus amyloliquefaciens QST713 and 25 ml of 41.7% fluopyram nematicide per acre of banana for the first root irrigation or drip irrigation.

[0075] Step 2: 25 to 30 days after the first root irrigation or drip irrigation, take 75 ml of 25 g / L fludioxonil, 75 ml of 10 g / L metalaxyl, 700 ml of Bacillus amyloliquefaciens QST713 and 25 ml of 41.7% fluopyram nematicide per acre of banana for the second root irrigation or drip irrigation.

[0076] Step 3: During the flower bud differentiation period, take 75 ml of 25 g / L fludioxonil, 75 ml of 10 g / L metalaxyl, and 700 ml of Bacillus amyloliquefaciens QST713 per acre of banana for the third root irrigation or drip irrigation.

[0077] Test and analysis Test 1 Experimental time: October 2022~November 2024; Experimental material: autumn-planted "Guijiao No. 9"; Experimental location: an agricultural banana base in Guangxi.

[0078] The test area was randomly divided into 11 test groups, each covering an area of ​​about 1 mu; test groups 1 to 8 were cultivated using the methods of Examples 1 to 8, test groups 9 to 10 were cultivated using the methods of Comparative Examples 1 to 2, and test group 11 was not treated. The number of buds, number of cases, fruit index and single plant yield of each group were recorded, and the bud rate and disease rate were calculated. The results are shown in Table 1; wherein, bud rate = number of buds / total number of pearls; disease rate = number of cases / total number of pearls.

[0079] Thirty healthy plants were randomly selected from experimental groups 4, 6, 7 and 9, respectively, and the plant height and pseudostem diameter were measured and the average values ​​were taken. The results are shown in Table 2.

[0080] In test group 4, test group 6, test group 7 and test group 9, 5 bananas from 20 healthy plants were randomly selected to measure the vitamin C content, total sugar content, soluble sugar content, sucrose content, starch content and soluble solids content, and the average values ​​were taken. The results are shown in Table 3.

[0081] After the experiment was completed, one healthy plant was randomly selected from each of the experimental groups 1 and 9 to compare the root status. The results are shown in Tables 1 and 2.

[0082] Table 1: Bananas in each group According to the data in Table 1, the method of the present invention can be used to cultivate and manage bananas, which can effectively increase the budding rate and promote the reproductive growth of bananas; at the same time, it can also reduce the incidence of bananas and improve the disease resistance of banana plants; and increase the fruit index and single plant yield.

[0083] According to the results of Tables 1 and 2, the method of Example 1 of the present invention can be used to cultivate and manage bananas, which can effectively increase the number of lateral roots of the plants.

[0084] Table 2: According to the data in Table 2, test groups 4, 6, and 7 are superior to test group 9 in terms of plant height and pseudostem diameter, indicating that the cultivation methods of embodiments 4, 6, and 7 of the present invention can promote the vegetative growth of banana plants, making the plants taller and the pseudostems thicker, and improving the growth indicators of banana plants to a certain extent.

[0085] Table 3: According to the data in Table 3, compared with experimental group 9, experimental groups 4, 6, and 7 can increase the accumulation of vitamin C, the total sugar content and the soluble solid content and reduce the starch content, making the fruit taste better.

[0086] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. They can be applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized.

Claims

1. A stress-resistant cultivation method for promoting the growth of banana root system, characterized in that: include: Take 25 g / L fludioxonil and 10 g / L metalaxyl-M in equal volumes and mix them to obtain a first mixed solution; 700 parts of Bacillus amyloliquefaciens QST713 agent, 8-9 parts of stabilizer, 25 parts of 41.7% fluopyram nematicide and 150 parts of the first mixed solution were mixed according to volume to obtain a second mixed solution; 700 parts of the Bacillus amyloliquefaciens QST713 inoculant and 150 parts of the first mixed solution were mixed according to volume to obtain a third mixed solution; 3-7 days after the banana plants are transplanted or during the banana seedling stage, the second mixed solution is used for the first root irrigation or drip irrigation at a rate of 875 ml / mu; 25-30 days after the first root irrigation or drip irrigation, use the second mixed solution at a rate of 875 ml / mu for the second root irrigation or drip irrigation; During the flower bud differentiation period, use the third mixed solution at a rate of 850 ml / mu for the third root irrigation or drip irrigation; The stabilizer is a substance that can protect the activity of the Bacillus amyloliquefaciens QST713 bacterial agent.

2. The stress-resistant cultivation method for promoting banana root growth as claimed in claim 1, characterized in that: When the volume of the second mixed liquid V ≤ 5 liters: Trehalose is selected as a stabilizer, and the addition amount m1 ranges from 50 g ≤ m1 ≤ 100 g; Alternatively, mannitol is selected as a stabilizer, and the addition amount m2 ranges from 60 g ≤ m2 ≤ 125 g; When 5L<V≤10L: Trehalose is selected, and the addition amount m1 ranges from 100 g < m1 ≤ 200 g; Or use mannitol, the addition amount m2 range is 120g<m2≤250g; When 10L<V≤20L: The range of trehalose addition amount m1 is 200 g<m1≤400 g; The range of mannitol addition amount m2 is 240 g < m2 ≤ 500 g; When V>20L: The amount of trehalose added m1 can be increased in proportion to adding 20 grams of trehalose for every 1 liter of mixed solution; The amount of mannitol added m2 can be increased by adding 25 grams of mannitol for every 1 liter of mixed solution.

3. The stress-resistant cultivation method for promoting banana root growth as claimed in claim 1, characterized in that: The fluopyram nematicide comprises a cyclodextrin inclusion treatment, which specifically comprises the following steps: β-cyclodextrin is selected as the inclusion host; Mixing 41.7% fluopyram nematicide and β-cyclodextrin in a molar ratio of 1:1 to 1:3; In an aqueous solution environment at a temperature of 40° C. to 60° C. and a pH value of 6.5 to 7.5, the reaction is continued with stirring at a stirring speed of 150 to 250 revolutions per minute for 2 to 4 hours to allow the fluopyram nematicide to fully react with the β-cyclodextrin to form an inclusion complex.

4. The stress-resistant cultivation method for promoting banana root growth as claimed in claim 1, characterized in that: It also includes laying mulch around the banana plants from November to May of the following year.

5. The stress-resistant cultivation method for promoting banana root growth as claimed in claim 1, characterized in that: It also includes laying a roof film above the banana plants, which is laid from December to March of the following year.

6. The stress-resistant cultivation method for promoting banana root growth as claimed in claim 1, characterized in that: It also includes laying sky film above the banana plants from December to March of the following year, and laying ground film around the banana plants from November to May of the following year.

7. The stress-resistant cultivation method for promoting banana root growth as claimed in claim 1, characterized in that: Also includes: 80 g / L of N solution, 80 g / L of P2O5 aqueous solution and 40 g / L of K2O aqueous solution were respectively mixed in equal volumes to obtain a fourth mixed solution; A humic acid aqueous solution with a concentration of not less than 30 g / L, a fourth mixed solution with a concentration of not less than 200 g / L, and an organic matter aqueous solution with a concentration of 150 g / L are respectively taken and mixed to obtain a fifth mixed solution; From November to March of the following year, use the fifth mixed solution to irrigate the roots of banana plants once every 25 to 50 days.

8. The stress-resistant cultivation method for promoting banana root growth as claimed in claim 7, characterized in that: The pH of the fifth mixed solution is 5.0, and the concentration of insoluble matter in the solution is not less than 50 g / L.

9. Use of the stress-resistant cultivation method for promoting banana root growth as claimed in claim 1 in preventing banana wilt.

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