A method for promoting sugarcane cultivation that simultaneously increases tolerance to aluminum acid and nitrogen fixation.

Abstract

This invention discloses a planting method for promoting sugarcane to simultaneously tolerate aluminum and fix nitrogen, comprising the following steps: (1) planting site treatment; (2) pretreatment of sugarcane seed stalks; (3) planting; (4) seedling and tillering stage management; (5) elongation and maturity stage management; and (6) harvesting. The method of this invention involves applying wood ash and quicklime, which can partially alleviate soil aluminum toxicity; calcium magnesium phosphate fertilizer, charcoal powder, and rice husks are also added, effectively alleviating the toxicity of aluminum stress on sugarcane seedling roots and promoting nitrogen fixation by rhizobia; spraying nitrogen-fixing fertilizer on the roots of sugarcane seedlings and applying nitrogen-fixing fertilizer and aluminum-tolerant root fertilizer during the tillering stage can effectively alleviate the adverse effects of soil aluminum toxicity on sugarcane roots; further applying aluminum-tolerant root fertilizer at the early elongation stage, peak elongation stage, and maturity stage can not only effectively alleviate the adverse effects of soil aluminum toxicity on sugarcane roots but also effectively increase the nodulation rate of sugarcane roots.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting technology, specifically to a planting method that promotes sugarcane to be resistant to both aluminum acid and nitrogen fixation. Background Technology

[0002] Sugarcane, also known as sweet sugarcane, stalk sugarcane, sugar stalk, dried sugarcane, stalk sugarcane, bamboo sugarcane, and intestinal herb, belongs to the Poaceae family, Sorghum tribe, and Canesmus genus. It is a tall, vigorous, monocotyledonous annual or perennial herbaceous plant native to tropical and subtropical regions. The sugarcane stalk is solid, growing regularly like bamboo, with nodes, each node containing a bud. Sugarcane grows in dense clumps, with beautiful, sword-shaped leaves similar to corn leaves. The leaf sheaths wrap around the stalk, protecting the buds. The stalks of sugarcane are rich in sweet juice, which is the raw material for making sugar and can also be used to extract ethanol as an energy substitute.

[0003] Acidic soil poses certain obstacles to plant growth and development, affecting not only plant yield and quality but also all life activities of plants. Its main manifestations are: (1) H + High concentration produces H + (1) High concentration of active aluminum leads to aluminum toxicity; (2) High concentration of active manganese leads to manganese toxicity, thus limiting plant growth; (3) Low cation availability leads to magnesium, calcium, and potassium deficiency; (4) Inhibited cation absorption leads to magnesium, calcium, and potassium deficiency; (5) Reduced solubility of phosphorus and molybdenum leads to phosphorus and molybdenum deficiency; (6) Inhibited root growth; (7) Increased leaching leads to nutrient loss. These obstacles seriously affect plant growth and development. Research on aluminum toxicity in plants has always been a hot topic.

[0004] Under aluminum stress, sugarcane growth is inhibited, necessitating the removal of soil aluminum toxicity. Furthermore, due to the effects of soil aluminum toxicity, sugarcane's nitrogen-fixing capacity is significantly reduced. To address this, inoculation with nitrogen-fixing bacteria is commonly used to promote nitrogen fixation in sugarcane. However, due to the adverse effects of soil aluminum toxicity, the inoculation effect is not ideal. In addition, the complex soil texture of aluminum-toxic soils presents challenges in selecting suitable nitrogen-fixing bacteria. Therefore, there is an urgent need to research planting methods that can promote sugarcane tolerance to both aluminum and nitrogen fixation. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a simple method for promoting the simultaneous tolerance of sugarcane to aluminum and nitrogen fixation, which can effectively improve the sugarcane's resistance to aluminum and nitrogen fixation.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A method for promoting sugarcane cultivation that simultaneously tolerates aluminum acid and fixes nitrogen, comprising the following steps:

[0007] (1) Planting site treatment: Weed the planting site, spread 150-180 kg / mu of wood ash and 50-60 kg / mu of quicklime on the planting site; cultivate the soil, prepare the land, and make ridges to obtain the planting site to be sown;

[0008] (2) Sugarcane seed stalk pretreatment: Disinfect sugarcane seed stalks with 2wt% lime water to obtain disinfected sugarcane seed stalks;

[0009] (3) Planting: In the sugarcane planting furrow in the planting area described in step (1), place base fertilizer, calcium magnesium phosphate fertilizer, charcoal powder and rice husks, then place sterilized sugarcane seed stalks in the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation; the amount of calcium magnesium phosphate fertilizer is 8-10 kg / mu; the amount of charcoal powder is 40-50 kg / mu; the amount of rice husks is 70-80 kg / mu;

[0010] (4) Management during the seedling and tillering stages:

[0011] 4.1) Seedling stage management: First, spray the whole plant with a high-nitrogen water-soluble fertilizer. 5-7 days later, spray the roots of the sugarcane seedlings with a nitrogen-fixing fertilizer. The nitrogen-fixing fertilizer includes the following components by weight: 1000 parts water, 0.5-0.8 parts sodium nitrophenolate, 30-35 parts calcium dophenate, 16-18 parts manganese sulfate, 13-15 parts borax, and 7-9 parts zinc chloride.

[0012] 4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer on the sugarcane roots; 15-17 days later, apply the root fertilizer for promoting acid tolerance to aluminum. The root fertilizer for promoting acid tolerance to aluminum includes the following components by weight: 35-40 parts charcoal powder, 30-35 parts rice husk, 20-25 parts calcium magnesium phosphate fertilizer, 35-40 parts wood ash, and 14-18 parts seaweed powder.

[0013] (5) Management during the elongation and maturity stages:

[0014] 5.1) Apply root fertilizer to promote acid tolerance to aluminum twice, once at the initial stage of elongation and once at the peak of elongation;

[0015] 5.2) Apply the aforementioned root fertilizer to promote acid tolerance to aluminum during the sugarcane ripening period;

[0016] (6) Harvesting: Harvest sugarcane at the appropriate time.

[0017] Further, in step (1), weeding is carried out on the planting area, and 160-180 kg / mu of wood ash and 55-60 kg / mu of quicklime are spread on the ground of the planting area; the soil is cultivated to a depth of 18-22 cm, the land is prepared, and ridges are made to obtain the planting area to be sown.

[0018] Further, in step (3), base fertilizer, calcium magnesium phosphate fertilizer, charcoal powder, and rice husks are placed in the sugarcane planting ditch in the planting area to be planted in step (1), and then sterilized sugarcane seed stalks are placed in the planting ditch, covered with soil, and covered with film to complete the film-covered cultivation; the amount of calcium magnesium phosphate fertilizer is 9-10 kg / mu; the amount of charcoal powder is 45-50 kg / mu; and the amount of rice husks is 75-80 kg / mu.

[0019] Furthermore, the base fertilizer in step (3) is well-rotted poultry and livestock manure, and the amount of base fertilizer used is 600-800 kg / mu.

[0020] Further, the nitrogen-fixing fertilizer mentioned in step 4.1) comprises the following components in parts by weight: 1000 parts water, 0.6-0.8 parts sodium nitrophenolate, 32-35 parts calcium dophenate, 17-18 parts manganese sulfate, 14-15 parts borax, and 8-9 parts zinc chloride.

[0021] Furthermore, the high-nitrogen water-soluble fertilizer in step 4.1) is a high-nitrogen macro-element water-soluble fertilizer 30-10-10+TE, and the dosage of the high-nitrogen water-soluble fertilizer is 10-15 kg / mu; the spraying method of the high-nitrogen water-soluble fertilizer is: dilute the high-nitrogen water-soluble fertilizer 800-1000 times and then spray it on the whole plant, spraying evenly on both sides of the leaves.

[0022] Furthermore, in step 4.1), after spraying nitrogen-fixing fertilizer at the roots of sugarcane seedlings, earthworms are inoculated in the sugarcane planting area at a rate of 50-60 kg / mu.

[0023] Further, the acid-tolerant aluminum root fertilizer mentioned in step 4.2) comprises the following components in parts by weight: 36-40 parts charcoal powder, 32-35 parts rice husk, 22-25 parts calcium magnesium phosphate fertilizer, 37-40 parts wood ash, and 15-18 parts seaweed powder.

[0024] Furthermore, the acid-tolerant aluminum root fertilizer in step 4.2) also includes 2 to 4 parts by weight of nitrocarbon enzyme fertilizer.

[0025] Furthermore, in step 5.1), 5-7 days after applying acid-tolerant aluminum root fertilizer during the peak elongation period, a yield-increasing agent is sprayed at a dosage of 150-180 kg / mu to promote balanced growth of sugarcane roots, stems, and leaves, prevent excessive vegetative growth, and increase sugarcane yield. The yield-increasing agent comprises the following components by weight: 1000 parts biogas slurry and 7-9 parts amino acid potassium water-soluble fertilizer.

[0026] The beneficial effects of this invention are as follows: This invention provides a planting method for promoting sugarcane's simultaneous tolerance to aluminum acid and nitrogen fixation. First, alkaline wood ash and quicklime are applied, followed by soil cultivation, which partially alleviates aluminum acid toxicity in the soil. During planting, calcium magnesium phosphate fertilizer, charcoal powder, and rice husks are added to the planting furrow along with base fertilizer. The calcium, magnesium, and phosphorus elements supplemented by the calcium magnesium phosphate fertilizer effectively alleviate the toxicity of aluminum acid stress on the roots of sugarcane seedlings. The added charcoal powder and rice husks increase soil porosity, delay the loss of nutrients such as calcium magnesium phosphate fertilizer, and are beneficial for the formation of good soil conditions. A favorable root environment facilitates contact between rhizobia and the host sugarcane, promoting a good parasitic relationship and encouraging nitrogen fixation through nodule formation. Spraying the entire seedling with a high-nitrogen water-soluble fertilizer during the seedling stage meets the sugarcane's nitrogen requirements and promotes seedling growth. Spraying the roots with a nitrogen-fixing fertilizer containing sodium nitrophenolate, calcium dopamine, manganese sulfate, borax, and zinc chloride further stimulates the sugarcane roots to absorb calcium, manganese, and zinc from the fertilizer. Under aluminum stress, this stimulates the sugarcane roots to absorb nitrogen-fixing nutrients. The calcium, manganese, and zinc elements in the fertilizer can effectively increase the nodulation rate of sugarcane roots. During the tillering stage, applying nitrogen-fixing fertilizer and aluminum-tolerant root fertilizer is crucial. Nitrogen-fixing fertilizer effectively increases the nodulation rate, while the charcoal powder and rice husks in the aluminum-tolerant root fertilizer increase soil porosity, slow the loss of calcium, magnesium, and phosphate fertilizers, and promote a favorable root environment. This facilitates contact between rhizobia and the host sugarcane, fostering a good parasitic relationship and promoting nodulation and nitrogen fixation. The calcium, magnesium, and phosphorus supplemented by the calcium, magnesium, and phosphate fertilizer effectively alleviates aluminum acid tolerance. The toxic effects of stress on sugarcane seedling roots can be partially mitigated by alkaline wood ash, which contains polysaccharides, mannitol, amino acids, vitamins, and trace elements such as potassium, iron, calcium, phosphorus, iodine, selenium, and cobalt, all of which are beneficial to sugarcane root growth. This effectively alleviates the adverse effects of soil aluminum toxicity on sugarcane roots. Furthermore, applying aluminum-tolerant root fertilizers at the early elongation stage, peak elongation stage, and maturity stage can not only effectively alleviate the adverse effects of soil aluminum toxicity on sugarcane roots but also effectively increase the nodulation rate of sugarcane roots.

[0027] This invention discloses a planting method for promoting sugarcane tolerance to both aluminum and nitrogen fixation. After spraying nitrogen-fixing fertilizer onto the roots of sugarcane seedlings, earthworms are inoculated into the sugarcane planting area. Earthworm inoculation results in a high survival rate, and earthworms efficiently decompose organic matter, improving soil quality and effectively mitigating aluminum toxicity in the soil. Simultaneously, it effectively increases the root nodule formation rate of sugarcane. The aluminum-tolerant root fertilizer also includes nitrocarbonase fertilizer, rich in carbonase raw powder. The carbonase-enzyme reaction rapidly activates the activity of biological enzymes within the sugarcane, promoting the sugarcane's absorption of various nutrients, leading to well-developed, thicker, and higher yields and sugar content, increasing sugarcane yield by more than 5% and sugar content by more than 3%. During the peak elongation period, after applying the aluminum-tolerant root fertilizer, a yield-promoting liquid is sprayed. Under the dual action of biogas slurry and amino acid potassium water-soluble fertilizer, sugarcane growth and development are stimulated, ensuring balanced growth of roots, stems, and leaves, preventing excessive vegetative growth, and increasing sugarcane yield. Detailed Implementation

[0028] The following embodiments can help those skilled in the art to more fully understand the present invention, but should not be construed as limiting the present invention in any way.

[0029] Example 1

[0030] A planting method to promote simultaneous tolerance to aluminum acid and nitrogen fixation in sugarcane was proposed. The sugarcane variety used in the experiment was Gui Re No. 2. The experimental site was Wuming District, Nanning, Guangxi Province. The soil type was loam, the soil pH was 4.0-4.5, the soil organic aluminum content was about 1300 μg / g, the Al(OH)3 content was about 2400 μg / g, and the total aluminum content was 4300-4500 μg / g. The method included the following steps:

[0031] (1) Planting site treatment: Weed the planting site with a weeding machine. The planting area is 5 mu. Spread 150 kg / mu of wood ash and 50 kg / mu of quicklime on the planting site. Cultivate the soil to a depth of 18 cm, prepare the land, and make ridges to obtain the planting site to be sown.

[0032] (2) Sugarcane seed stem pretreatment: Disinfect sugarcane seed stems with 2wt% lime water for 12 hours to obtain disinfected sugarcane seed stems;

[0033] (3) Planting: In step (1), put well-rotted poultry and livestock manure, calcium magnesium phosphate fertilizer, charcoal powder and rice husks into the sugarcane planting furrow in the planting area to be planted. Then put the sterilized sugarcane seed stalks into the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation. The amount of calcium magnesium phosphate fertilizer is 8 kg / mu; the amount of charcoal powder is 40 kg / mu; the amount of rice husks is 70 kg / mu; and the amount of well-rotted poultry and livestock manure is 600 kg / mu.

[0034] (4) Management during the seedling and tillering stages:

[0035] 4.1) Seedling management: First, spray the entire plant with a high-nitrogen water-soluble fertilizer 30-10-10+TE at a rate of 10 kg / mu. The spraying method is as follows: dilute the high-nitrogen water-soluble fertilizer 800 times and then spray the entire plant, spraying evenly on both sides of the leaves. Five days later, spray nitrogen-fixing fertilizer at a rate of 240 kg / mu at the base of the sugarcane seedlings. After spraying the nitrogen-fixing fertilizer at the base of the sugarcane seedlings, inoculate earthworms in the sugarcane planting area at a rate of 50 kg / mu. The nitrogen-fixing fertilizer consists of the following components by weight: 1000 parts water, 0.5 parts sodium nitrophenolate, 30 parts calcium dophenateol, 16 parts manganese sulfate, 13 parts borax, and 7 parts zinc chloride.

[0036] 4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer at 300 kg / mu on the sugarcane roots; 15 days later, apply 60 kg / mu of acid-tolerant aluminum root fertilizer to the roots at a depth of 20 cm; the acid-tolerant aluminum root fertilizer includes the following components by weight: 35 parts charcoal powder, 30 parts rice husk, 20 parts calcium magnesium phosphate fertilizer, 35 parts wood ash, 14 parts seaweed powder, and 2 parts nitrocarbon enzyme fertilizer;

[0037] (5) Management during the elongation and maturity stages:

[0038] 5.1) Apply root fertilizer to promote acid tolerance twice, once at the initial stage and once at the peak of elongation. The amount of root fertilizer to promote acid tolerance should be controlled at 50 kg / mu, and the application depth should be 8 cm. Five days after applying root fertilizer to promote acid tolerance during the peak of elongation, spray a yield-increasing liquid at a rate of 150 kg / mu. The yield-increasing liquid includes the following components by weight: 1000 parts biogas slurry and 7 parts amino acid potassium water-soluble fertilizer.

[0039] 5.2) Apply 40 kg / mu of root fertilizer to promote acid tolerance to aluminum during the sugarcane maturity period, at a depth of 12 cm;

[0040] (6) Harvesting: Harvest sugarcane at the appropriate time.

[0041] Example 2

[0042] A planting method to promote simultaneous tolerance to aluminum acid and nitrogen fixation in sugarcane was proposed. The sugarcane variety used in the experiment was Guitang 11. The experimental site was Wuming District, Nanning, Guangxi Province. The soil type was loam, the soil pH was 4.0-4.5, the soil organic aluminum content was about 1300 μg / g, the Al(OH)3 content was about 2400 μg / g, and the total aluminum content was 4300-4500 μg / g. The method included the following steps:

[0043] (1) Planting site treatment: Weed the planting site with a weeding machine. The planting area is 5 mu. Spread 180 kg / mu of wood ash and 60 kg / mu of quicklime on the planting site. Cultivate the soil to a depth of 22 cm, prepare the land, and make ridges to obtain the planting site to be sown.

[0044] (2) Sugarcane seed stem pretreatment: Disinfect sugarcane seed stems with 2wt% lime water for 12 hours to obtain disinfected sugarcane seed stems;

[0045] (3) Planting: In step (1), put well-rotted poultry and livestock manure, calcium magnesium phosphate fertilizer, charcoal powder and rice husks into the sugarcane planting furrow in the planting area to be planted. Then put the sterilized sugarcane seed stalks into the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation. The amount of calcium magnesium phosphate fertilizer is 10 kg / mu; the amount of charcoal powder is 50 kg / mu; the amount of rice husks is 80 kg / mu; and the amount of well-rotted poultry and livestock manure is 800 kg / mu.

[0046] (4) Management during the seedling and tillering stages:

[0047] 4.1) Seedling management: First, spray the entire plant with a high-nitrogen water-soluble fertilizer 30-10-10+TE at a rate of 15 kg / mu. The spraying method is as follows: dilute the high-nitrogen water-soluble fertilizer 1000 times and then spray the entire plant, spraying evenly on both sides of the leaves. Seven days later, spray nitrogen-fixing fertilizer at a rate of 260 kg / mu at the roots of the sugarcane seedlings. After spraying the nitrogen-fixing fertilizer at the roots of the sugarcane seedlings, inoculate earthworms in the sugarcane planting area at a rate of 60 kg / mu. The nitrogen-fixing fertilizer includes the following components by weight: 1000 parts water, 0.8 parts sodium nitrophenolate, 35 parts calcium dophenateol, 18 parts manganese sulfate, 15 parts borax, and 9 parts zinc chloride.

[0048] 4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer at 350 kg / mu on the sugarcane roots; 17 days later, apply 80 kg / mu of acid-tolerant aluminum root fertilizer to the roots at a depth of 20 cm; the acid-tolerant aluminum root fertilizer includes the following components by weight: 40 parts charcoal powder, 35 parts rice husk, 25 parts calcium magnesium phosphate fertilizer, 40 parts wood ash, 18 parts seaweed powder, and 4 parts nitrocarbon enzyme fertilizer;

[0049] (5) Management during the elongation and maturity stages:

[0050] 5.1) Apply root fertilizer to promote acid tolerance twice, once at the initial stage and once at the peak of elongation. The amount of root fertilizer to promote acid tolerance should be controlled at 70 kg / mu, and the application depth should be 8 cm. Seven days after applying root fertilizer to promote acid tolerance during the peak of elongation, spray a yield-increasing liquid at a rate of 180 kg / mu. The yield-increasing liquid includes the following components by weight: 1000 parts biogas slurry and 9 parts amino acid potassium water-soluble fertilizer.

[0051] 5.2) Apply 50 kg / mu of root fertilizer to promote acid tolerance to aluminum during the sugarcane maturity period, at a depth of 12 cm;

[0052] (6) Harvesting: Harvest sugarcane at the appropriate time.

[0053] Example 3

[0054] A planting method to promote simultaneous tolerance to aluminum acid and nitrogen fixation in sugarcane was proposed. The sugarcane variety used in the experiment was Xintai Sugar 22. The experimental site was Wuming District, Nanning, Guangxi Province. The soil type was loam, the soil pH was 4.0-4.5, the soil organic aluminum content was about 1300 μg / g, the Al(OH)3 content was about 2400 μg / g, and the total aluminum content was 4300-4500 μg / g. The method included the following steps:

[0055] (1) Planting site treatment: Weed the planting site with a weeding machine. The planting area is 5 mu. Spread 160 kg / mu of wood ash and 55 kg / mu of quicklime on the planting site. Cultivate the soil to a depth of 20 cm, prepare the land, and make ridges to obtain the planting site to be sown.

[0056] (2) Sugarcane seed stem pretreatment: Disinfect sugarcane seed stems with 2wt% lime water for 12 hours to obtain disinfected sugarcane seed stems;

[0057] (3) Planting: In step (1), put well-rotted poultry and livestock manure, calcium magnesium phosphate fertilizer, charcoal powder and rice husks into the sugarcane planting furrow in the planting area to be planted. Then put the sterilized sugarcane seed stalks into the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation. The amount of calcium magnesium phosphate fertilizer is 9 kg / mu; the amount of charcoal powder is 45 kg / mu; the amount of rice husks is 75 kg / mu; and the amount of well-rotted poultry and livestock manure is 700 kg / mu.

[0058] (4) Management during the seedling and tillering stages:

[0059] 4.1) Seedling management: First, spray the entire plant with a high-nitrogen water-soluble fertilizer 30-10-10+TE at a rate of 12 kg / mu. The spraying method is as follows: dilute the high-nitrogen water-soluble fertilizer 900 times and then spray the entire plant, spraying evenly on both sides of the leaves. Six days later, spray nitrogen-fixing fertilizer at a rate of 250 kg / mu at the roots of the sugarcane seedlings. After spraying the nitrogen-fixing fertilizer at the roots of the sugarcane seedlings, inoculate earthworms in the sugarcane planting area at a rate of 55 kg / mu. The nitrogen-fixing fertilizer includes the following components by weight: 1000 parts water, 0.6 parts sodium nitrophenolate, 32 parts calcium dophenateol, 17 parts manganese sulfate, 14 parts borax, and 8 parts zinc chloride.

[0060] 4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer at 320 kg / mu on the sugarcane roots; 16 days later, apply 70 kg / mu of acid-tolerant aluminum root fertilizer to the roots at a depth of 20 cm; the acid-tolerant aluminum root fertilizer includes the following components by weight: 36 parts charcoal powder, 32 parts rice husk, 22 parts calcium magnesium phosphate fertilizer, 37 parts wood ash, 15 parts seaweed powder, and 3 parts nitrocarbon enzyme fertilizer;

[0061] (5) Management during the elongation and maturity stages:

[0062] 5.1) Apply root fertilizer to promote acid tolerance twice, once at the initial stage and once at the peak of elongation. The amount of root fertilizer to promote acid tolerance should be controlled at 60 kg / mu, and the application depth should be 8 cm. Six days after applying root fertilizer to promote acid tolerance during the peak of elongation, spray a yield-increasing liquid at a rate of 160 kg / mu. The yield-increasing liquid includes the following components by weight: 1000 parts biogas slurry and 8 parts amino acid potassium water-soluble fertilizer.

[0063] 5.2) Apply 45 kg / mu of root fertilizer to promote acid tolerance to aluminum during the sugarcane maturity period, at a depth of 12 cm;

[0064] (6) Harvesting: Harvest sugarcane at the appropriate time.

[0065] Example 4

[0066] A planting method to promote simultaneous tolerance to aluminum acid and nitrogen fixation in sugarcane was proposed. The sugarcane variety used in the experiment was Xintai Sugar 22. The experimental site was Wuming District, Nanning, Guangxi Province. The soil type was loam, the soil pH was 4.0-4.5, the soil organic aluminum content was about 1300 μg / g, the Al(OH)3 content was about 2400 μg / g, and the total aluminum content was 4300-4500 μg / g. The method included the following steps:

[0067] (1) Planting site treatment: Weed the planting site with a weeding machine. The planting area is 5 mu. Spread 160 kg / mu of wood ash and 55 kg / mu of quicklime on the planting site. Cultivate the soil to a depth of 20 cm, prepare the land, and make ridges to obtain the planting site to be sown.

[0068] (2) Sugarcane seed stem pretreatment: Disinfect sugarcane seed stems with 2wt% lime water for 12 hours to obtain disinfected sugarcane seed stems;

[0069] (3) Planting: In step (1), put well-rotted poultry and livestock manure, calcium magnesium phosphate fertilizer, charcoal powder and rice husks into the sugarcane planting furrow in the planting area to be planted. Then put the sterilized sugarcane seed stalks into the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation. The amount of calcium magnesium phosphate fertilizer is 9 kg / mu; the amount of charcoal powder is 45 kg / mu; the amount of rice husks is 75 kg / mu; and the amount of well-rotted poultry and livestock manure is 700 kg / mu.

[0070] (4) Management during the seedling and tillering stages:

[0071] 4.1) Seedling management: First, spray the entire plant with a high-nitrogen water-soluble fertilizer 30-10-10+TE at a rate of 12 kg / mu. The spraying method is as follows: dilute the high-nitrogen water-soluble fertilizer 900 times and then spray the entire plant, spraying evenly on both sides of the leaves. Six days later, spray nitrogen-fixing fertilizer at the roots of the sugarcane seedlings at a rate of 250 kg / mu. The nitrogen-fixing fertilizer includes the following components by weight: 1000 parts water, 0.6 parts sodium nitrophenolate, 32 parts calcium dophenateol, 17 parts manganese sulfate, 14 parts borax, and 8 parts zinc chloride.

[0072] 4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer at 320 kg / mu on the sugarcane roots; 16 days later, apply 70 kg / mu of acid-tolerant aluminum root fertilizer to the roots at a depth of 20 cm; the acid-tolerant aluminum root fertilizer includes the following components by weight: 36 parts charcoal powder, 32 parts rice husk, 22 parts calcium magnesium phosphate fertilizer, 37 parts wood ash, 15 parts seaweed powder, and 3 parts nitrocarbon enzyme fertilizer;

[0073] (5) Management during the elongation and maturity stages:

[0074] 5.1) Apply root fertilizer to promote acid tolerance twice, once at the initial stage and once at the peak of elongation. The amount of root fertilizer to promote acid tolerance should be controlled at 60 kg / mu, and the application depth should be 8 cm. Six days after applying root fertilizer to promote acid tolerance during the peak of elongation, spray a yield-increasing liquid at a rate of 160 kg / mu. The yield-increasing liquid includes the following components by weight: 1000 parts biogas slurry and 8 parts amino acid potassium water-soluble fertilizer.

[0075] 5.2) Apply 45 kg / mu of root fertilizer to promote acid tolerance to aluminum during the sugarcane maturity period, at a depth of 12 cm;

[0076] (6) Harvesting: Harvest sugarcane at the appropriate time.

[0077] Example 5

[0078] A planting method to promote simultaneous tolerance to aluminum acid and nitrogen fixation in sugarcane was proposed. The sugarcane variety used in the experiment was Xintai Sugar 22. The experimental site was Wuming District, Nanning, Guangxi Province. The soil type was loam, the soil pH was 4.0-4.5, the soil organic aluminum content was about 1300 μg / g, the Al(OH)3 content was about 2400 μg / g, and the total aluminum content was 4300-4500 μg / g. The method included the following steps:

[0079] (1) Planting site treatment: Weed the planting site with a weeding machine. The planting area is 5 mu. Spread 160 kg / mu of wood ash and 55 kg / mu of quicklime on the planting site. Cultivate the soil to a depth of 20 cm, prepare the land, and make ridges to obtain the planting site to be sown.

[0080] (2) Sugarcane seed stem pretreatment: Disinfect sugarcane seed stems with 2wt% lime water for 12 hours to obtain disinfected sugarcane seed stems;

[0081] (3) Planting: In step (1), put well-rotted poultry and livestock manure, calcium magnesium phosphate fertilizer, charcoal powder and rice husks into the sugarcane planting furrow in the planting area to be planted. Then put the sterilized sugarcane seed stalks into the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation. The amount of calcium magnesium phosphate fertilizer is 9 kg / mu; the amount of charcoal powder is 45 kg / mu; the amount of rice husks is 75 kg / mu; and the amount of well-rotted poultry and livestock manure is 700 kg / mu.

[0082] (4) Management during the seedling and tillering stages:

[0083] 4.1) Seedling management: First, spray the entire plant with a high-nitrogen water-soluble fertilizer 30-10-10+TE at a rate of 12 kg / mu. The spraying method is as follows: dilute the high-nitrogen water-soluble fertilizer 900 times and then spray the entire plant, spraying evenly on both sides of the leaves. Six days later, spray nitrogen-fixing fertilizer at a rate of 250 kg / mu at the roots of the sugarcane seedlings. After spraying the nitrogen-fixing fertilizer at the roots of the sugarcane seedlings, inoculate earthworms in the sugarcane planting area at a rate of 55 kg / mu. The nitrogen-fixing fertilizer includes the following components by weight: 1000 parts water, 0.6 parts sodium nitrophenolate, 32 parts calcium dophenateol, 17 parts manganese sulfate, 14 parts borax, and 8 parts zinc chloride.

[0084] 4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer at 320 kg / mu on the sugarcane roots; 16 days later, apply 70 kg / mu of acid-tolerant aluminum root fertilizer to the roots at a depth of 20 cm; the acid-tolerant aluminum root fertilizer includes the following components by weight: 36 parts charcoal powder, 32 parts rice husk, 22 parts calcium magnesium phosphate fertilizer, 37 parts wood ash, and 15 parts seaweed powder;

[0085] (5) Management during the elongation and maturity stages:

[0086] 5.1) Apply root fertilizer to promote acid tolerance twice, once at the initial stage and once at the peak of elongation. The amount of root fertilizer to promote acid tolerance should be controlled at 60 kg / mu, and the application depth should be 8 cm. Six days after applying root fertilizer to promote acid tolerance during the peak of elongation, spray a yield-increasing liquid at a rate of 160 kg / mu. The yield-increasing liquid includes the following components by weight: 1000 parts biogas slurry and 8 parts amino acid potassium water-soluble fertilizer.

[0087] 5.2) Apply 45 kg / mu of root fertilizer to promote acid tolerance to aluminum during the sugarcane maturity period, at a depth of 12 cm;

[0088] (6) Harvesting: Harvest sugarcane at the appropriate time.

[0089] Example 6

[0090] A planting method to promote simultaneous tolerance to aluminum acid and nitrogen fixation in sugarcane was proposed. The sugarcane variety used in the experiment was Xintai Sugar 22. The experimental site was Wuming District, Nanning, Guangxi Province. The soil type was loam, the soil pH was 4.0-4.5, the soil organic aluminum content was about 1300 μg / g, the Al(OH)3 content was about 2400 μg / g, and the total aluminum content was 4300-4500 μg / g. The method included the following steps:

[0091] (1) Planting site treatment: Weed the planting site with a weeding machine. The planting area is 5 mu. Spread 160 kg / mu of wood ash and 55 kg / mu of quicklime on the planting site. Cultivate the soil to a depth of 20 cm, prepare the land, and make ridges to obtain the planting site to be sown.

[0092] (2) Sugarcane seed stem pretreatment: Disinfect sugarcane seed stems with 2wt% lime water for 12 hours to obtain disinfected sugarcane seed stems;

[0093] (3) Planting: In step (1), put well-rotted poultry and livestock manure, calcium magnesium phosphate fertilizer, charcoal powder and rice husks into the sugarcane planting furrow in the planting area to be planted. Then put the sterilized sugarcane seed stalks into the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation. The amount of calcium magnesium phosphate fertilizer is 9 kg / mu; the amount of charcoal powder is 45 kg / mu; the amount of rice husks is 75 kg / mu; and the amount of well-rotted poultry and livestock manure is 700 kg / mu.

[0094] (4) Management during the seedling and tillering stages:

[0095] 4.1) Seedling management: First, spray the entire plant with a high-nitrogen water-soluble fertilizer 30-10-10+TE at a rate of 12 kg / mu. The spraying method is as follows: dilute the high-nitrogen water-soluble fertilizer 900 times and then spray the entire plant, spraying evenly on both sides of the leaves. Six days later, spray nitrogen-fixing fertilizer at a rate of 250 kg / mu at the roots of the sugarcane seedlings. After spraying the nitrogen-fixing fertilizer at the roots of the sugarcane seedlings, inoculate earthworms in the sugarcane planting area at a rate of 55 kg / mu. The nitrogen-fixing fertilizer includes the following components by weight: 1000 parts water, 0.6 parts sodium nitrophenolate, 32 parts calcium dophenateol, 17 parts manganese sulfate, 14 parts borax, and 8 parts zinc chloride.

[0096] 4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer at 320 kg / mu on the sugarcane roots; 16 days later, apply 70 kg / mu of acid-tolerant aluminum root fertilizer to the roots at a depth of 20 cm; the acid-tolerant aluminum root fertilizer includes the following components by weight: 36 parts charcoal powder, 32 parts rice husk, 22 parts calcium magnesium phosphate fertilizer, 37 parts wood ash, 15 parts seaweed powder, and 3 parts nitrocarbon enzyme fertilizer;

[0097] (5) Management during the elongation and maturity stages:

[0098] 5.1) Apply root fertilizer to promote acid tolerance twice, once at the early stage of elongation and once at the peak of elongation. The amount of root fertilizer to promote acid tolerance should be controlled at 60 kg / mu and the application depth should be 8 cm.

[0099] 5.2) Apply 45 kg / mu of root fertilizer to promote acid tolerance to aluminum during the sugarcane maturity period, at a depth of 12 cm;

[0100] (6) Harvesting: Harvest sugarcane at the appropriate time.

[0101] Comparative Example 1

[0102] A planting method to promote simultaneous tolerance to aluminum acid and nitrogen fixation in sugarcane was proposed. The sugarcane variety used in the experiment was Xintai Sugar 22. The experimental site was Wuming District, Nanning, Guangxi Province. The soil type was loam, the soil pH was 4.0-4.5, the soil organic aluminum content was about 1300 μg / g, the Al(OH)3 content was about 2400 μg / g, and the total aluminum content was 4300-4500 μg / g. The method included the following steps:

[0103] (1) Planting site treatment: Weed the planting site with a weeding machine. The planting area is 5 mu. Spread 160 kg / mu of wood ash and 55 kg / mu of quicklime on the planting site. Cultivate the soil to a depth of 20 cm, prepare the land, and make ridges to obtain the planting site to be sown.

[0104] (2) Sugarcane seed stem pretreatment: Disinfect sugarcane seed stems with 2wt% lime water for 12 hours to obtain disinfected sugarcane seed stems;

[0105] (3) Planting: In step (1), put well-rotted poultry and livestock manure and calcium magnesium phosphate fertilizer into the sugarcane planting furrow in the planting area to be planted, then put disinfected sugarcane seed stalks into the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation; the amount of calcium magnesium phosphate fertilizer is 9 kg / mu; the amount of well-rotted poultry and livestock manure is 700 kg / mu.

[0106] (4) Management during the seedling and tillering stages:

[0107] 4.1) Seedling management: First, spray the entire plant with a high-nitrogen water-soluble fertilizer 30-10-10+TE at a rate of 12 kg / mu. The spraying method is as follows: dilute the high-nitrogen water-soluble fertilizer 900 times and then spray the entire plant, spraying evenly on both sides of the leaves. Six days later, spray nitrogen-fixing fertilizer at a rate of 250 kg / mu at the roots of the sugarcane seedlings. After spraying the nitrogen-fixing fertilizer at the roots of the sugarcane seedlings, inoculate earthworms in the sugarcane planting area at a rate of 55 kg / mu. The nitrogen-fixing fertilizer includes the following components by weight: 1000 parts water, 0.6 parts sodium nitrophenolate, 32 parts calcium dophenateol, 17 parts manganese sulfate, 14 parts borax, and 8 parts zinc chloride.

[0108] 4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer at 320 kg / mu on the sugarcane roots; 16 days later, apply 70 kg / mu of acid-tolerant aluminum root fertilizer to the roots at a depth of 20 cm; the acid-tolerant aluminum root fertilizer includes the following components by weight: 22 parts calcium magnesium phosphate fertilizer, 37 parts wood ash, 15 parts seaweed powder, and 3 parts nitrocarbon enzyme fertilizer;

[0109] (5) Management during the elongation and maturity stages:

[0110] 5.1) Apply root fertilizer to promote acid tolerance twice, once at the initial stage and once at the peak of elongation. The amount of root fertilizer to promote acid tolerance should be controlled at 60 kg / mu, and the application depth should be 8 cm. Six days after applying root fertilizer to promote acid tolerance during the peak of elongation, spray a yield-increasing liquid at a rate of 160 kg / mu. The yield-increasing liquid includes the following components by weight: 1000 parts biogas slurry and 8 parts amino acid potassium water-soluble fertilizer.

[0111] 5.2) Apply 45 kg / mu of root fertilizer to promote acid tolerance to aluminum during the sugarcane maturity period, at a depth of 12 cm;

[0112] (6) Harvesting: Harvest sugarcane at the appropriate time.

[0113] Comparative Example 2

[0114] A planting method to promote simultaneous tolerance to aluminum acid and nitrogen fixation in sugarcane was proposed. The sugarcane variety used in the experiment was Xintai Sugar 22. The experimental site was Wuming District, Nanning, Guangxi Province. The soil type was loam, the soil pH was 4.0-4.5, the soil organic aluminum content was about 1300 μg / g, the Al(OH)3 content was about 2400 μg / g, and the total aluminum content was 4300-4500 μg / g. The method included the following steps:

[0115] (1) Planting site treatment: Weed the planting site with a weeding machine. The planting area is 5 mu. Spread 160 kg / mu of wood ash and 55 kg / mu of quicklime on the planting site. Cultivate the soil to a depth of 20 cm, prepare the land, and make ridges to obtain the planting site to be sown.

[0116] (2) Sugarcane seed stem pretreatment: Disinfect sugarcane seed stems with 2wt% lime water for 12 hours to obtain disinfected sugarcane seed stems; then mix the seeds with rhizobium agent, using 0.3 kg of rhizobium agent per mu of sugarcane seed stems, with more than 2.5 billion live bacteria per gram of rhizobium agent.

[0117] (3) Planting: In step (1), put well-rotted poultry and livestock manure and calcium magnesium phosphate fertilizer into the sugarcane planting furrow in the planting area to be planted. Then put the disinfected and inoculated sugarcane seed stalks with rhizobium agent into the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation. The amount of calcium magnesium phosphate fertilizer used is 9 kg / mu; the amount of well-rotted poultry and livestock manure used is 700 kg / mu.

[0118] (4) Fertilizer management: Apply nitrogen, phosphorus and potassium fertilizers in a timely manner;

[0119] (5) Harvesting: Harvest sugarcane at the appropriate time.

[0120] The sugarcane growth and quality in Examples 1-6 and Comparative Examples 1-2 were statistically analyzed, and the results are shown in Table 1 below:

[0121] Table 1

[0122]

[0123]

[0124] The nitrogen fixation activity was determined by the acetylene reduction method (Lin Li et al., 2008). The statistical results above indicate that the planting method of this invention, which promotes sugarcane's simultaneous tolerance to aluminum acid and nitrogen fixation, involves first applying slightly alkaline wood ash and quicklime, followed by soil cultivation, which can partially alleviate the toxicity of aluminum acid in the soil. During planting, calcium magnesium phosphate fertilizer, charcoal powder, and rice husks are added to the planting furrow along with the base fertilizer. The calcium, magnesium, and phosphorus elements supplemented by the calcium magnesium phosphate fertilizer effectively alleviate the toxicity of aluminum acid stress on the roots of sugarcane seedlings. The added charcoal powder and rice husks increase soil porosity, delay the loss of nutrients such as calcium magnesium phosphate fertilizer, and simultaneously contribute to the formation of a favorable root environment. This facilitates contact between rhizobia and the host sugarcane, promoting a good parasitic relationship and nitrogen fixation by rhizobia. Spraying the entire seedling with a high-nitrogen water-soluble fertilizer during the seedling stage can meet the sugarcane's nitrogen requirements and promote seedling growth. Spraying nitrogen-fixing fertilizer at the roots of sugarcane seedlings, containing sodium nitrophenolate, calcium dofenitol, manganese sulfate, borax, and zinc chloride, is also beneficial. Sodium nitrophenolate primarily stimulates the sugarcane roots to absorb calcium, manganese, and zinc from the nitrogen-fixing fertilizer. Under aluminum stress, stimulating the sugarcane roots to absorb calcium, manganese, and zinc from the nitrogen-fixing fertilizer can effectively increase the nodulation rate of sugarcane roots. During the tillering stage, management involves applying nitrogen-fixing fertilizer and aluminum-tolerant root fertilizer. The nitrogen-fixing fertilizer effectively increases the nodulation rate of sugarcane roots, while the charcoal powder and rice husks in the aluminum-tolerant root fertilizer increase soil porosity, delay the loss of nutrients such as calcium, magnesium, and phosphate fertilizers, and also contribute to the formation of a favorable root environment, which is conducive to the interaction between rhizobia and the host sugarcane. Contact facilitates the establishment of a favorable parasitic relationship between rhizobia and the host sugarcane, promoting nodulation and nitrogen fixation by rhizobia. The calcium, magnesium, and phosphorus elements supplemented by calcium-magnesium-phosphate fertilizer effectively alleviate the toxic effects of aluminum stress on sugarcane seedling roots. Alkaline wood ash can partially alleviate soil aluminum toxicity. The seaweed polysaccharides, mannitol, amino acids, vitamins, and trace elements such as potassium, iron, calcium, phosphorus, iodine, selenium, and cobalt in seaweed powder are beneficial to sugarcane root growth, thus effectively mitigating the adverse effects of soil aluminum toxicity on sugarcane roots. Applying aluminum-tolerant root fertilizer at the early elongation stage, peak elongation stage, and maturity stage not only effectively alleviates the adverse effects of soil aluminum toxicity on sugarcane roots but also effectively increases the nodulation rate of sugarcane roots. After spraying nitrogen-fixing fertilizer on the roots of sugarcane seedlings, further application of fertilizer to the sugarcane... Earthworm inoculation in the planting area results in a high survival rate, and earthworms efficiently decompose organic matter, improving soil quality and effectively alleviating aluminum toxicity in the soil. It also significantly increases the nodulation rate of sugarcane roots. The aluminum-tolerant root fertilizer also includes nitrocarbonase fertilizer, rich in carbonase powder. The carbonase-enzyme reaction rapidly activates the activity of biological enzymes within the sugarcane, promoting the absorption of various nutrients, leading to well-developed, thicker, and more abundant sugarcane roots, increasing yield by over 5% and sugar content by over 3%. During the peak elongation period, after applying the aluminum-tolerant root fertilizer, spraying a yield-promoting solution, combined with the effects of biogas slurry and amino acid potassium water-soluble fertilizer, stimulates sugarcane growth and development, ensuring balanced growth of roots, stems, and leaves, preventing excessive vegetative growth, and ultimately increasing sugarcane yield.

[0125] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A method for promoting sugarcane cultivation that simultaneously enhances tolerance to aluminum acid and nitrogen fixation, characterized in that, The following steps are involved: (1) Planting site treatment: Weed the planting site, and spread 150-180 kg / mu of wood ash and 50-60 kg / mu of quicklime on the ground; cultivate the soil, prepare the land, and make ridges to obtain the planting site to be sown; (2) Sugarcane seed stalk pretreatment: Disinfect sugarcane seed stalks with 2wt% lime water to obtain disinfected sugarcane seed stalks; (3) Planting: In the sugarcane planting furrow in the planting area described in step (1), place base fertilizer, calcium magnesium phosphate fertilizer, charcoal powder and rice husks, then place sterilized sugarcane seed stalks in the planting furrow, cover with soil, cover with film, and complete the film-covered cultivation; the amount of calcium magnesium phosphate fertilizer is 8-10 kg / mu; the amount of charcoal powder is 40-50 kg / mu; the amount of rice husks is 70-80 kg / mu. (4) Management during the seedling and tillering stages: (4.1) Seedling management: First, spray the whole plant with high-nitrogen water-soluble fertilizer. 5-7 days later, spray nitrogen-fixing fertilizer at the roots of the sugarcane seedlings. The nitrogen-fixing fertilizer includes the following components by weight: 1000 parts water, 0.5-0.8 parts sodium nitrophenolate, 30-35 parts calcium dophenate, 16-18 parts manganese sulfate, 13-15 parts borax, and 7-9 parts zinc chloride. After spraying nitrogen-fixing fertilizer at the roots of sugarcane seedlings, earthworms are inoculated in the sugarcane planting area at a rate of 50-60 kg / mu. (4.2) Tillering stage management: Spray the nitrogen-fixing fertilizer on the sugarcane roots; 15-17 days later, apply the acid-tolerant aluminum root fertilizer to the roots. The acid-tolerant aluminum root fertilizer includes the following components in parts by weight: 35-40 parts charcoal powder, 30-35 parts rice husk, 20-25 parts calcium magnesium phosphate fertilizer, 35-40 parts wood ash, and 14-18 parts seaweed powder. The acid-tolerant aluminum root fertilizer also includes 2-4 parts by weight of nitrocarbon enzyme fertilizer; (5) Management during the elongation and maturity stages: (5.1) Apply aluminum-tolerant root fertilizer twice, once at the initial stage of elongation and once at the peak of elongation; Five to seven days after applying acid-tolerant aluminum root fertilizer during the peak elongation period, spray a yield-increasing agent at a rate of 150 to 180 kg / mu to promote balanced growth of sugarcane roots, stems, and leaves, prevent excessive vegetative growth, and increase sugarcane yield. The yield-increasing agent includes the following components by weight: 1000 parts biogas slurry and 7 to 9 parts amino acid potassium water-soluble fertilizer. (5.2) Apply the aforementioned root fertilizer to promote acid tolerance to aluminum during the sugarcane ripening period; (6) Harvesting: Harvest sugarcane at the appropriate time.

2. The method for promoting sugarcane cultivation that simultaneously enhances tolerance to aluminum acid and nitrogen fixation according to claim 1, characterized in that, In step (1), weeding is carried out on the planting area, and 160-180 kg / mu of wood ash and 55-60 kg / mu of quicklime are spread on the ground. The soil is cultivated to a depth of 18-22 cm, the land is prepared, and ridges are formed to obtain the planting area to be sown.

3. The method for promoting sugarcane cultivation that simultaneously enhances tolerance to aluminum acid and nitrogen fixation according to claim 1, characterized in that, In step (3), base fertilizer, calcium magnesium phosphate fertilizer, charcoal powder, and rice husks are placed in the sugarcane planting ditch in the planting area to be planted in step (1). Then, sterilized sugarcane seed stalks are placed in the planting ditch, covered with soil, and covered with film to complete the film-covered cultivation. The amount of calcium magnesium phosphate fertilizer used is 9-10 kg / mu; the amount of charcoal powder used is 45-50 kg / mu; and the amount of rice husks used is 75-80 kg / mu.

4. The method for promoting sugarcane cultivation that simultaneously enhances tolerance to aluminum acid and nitrogen fixation according to claim 1, characterized in that, The base fertilizer in step (3) is well-rotted poultry and livestock manure, and the amount of base fertilizer used is 600-800 kg / mu.

5. The method for promoting sugarcane cultivation that simultaneously enhances tolerance to aluminum acid and nitrogen fixation according to claim 1, characterized in that, The nitrogen-fixing fertilizer mentioned in step 4.1) comprises the following components in parts by weight: 1000 parts water, 0.6-0.8 parts sodium nitrophenolate, 32-35 parts calcium dophenate, 17-18 parts manganese sulfate, 14-15 parts borax, and 8-9 parts zinc chloride.

6. The method for promoting sugarcane cultivation that simultaneously enhances tolerance to aluminum acid and nitrogen fixation according to claim 1, characterized in that, The high-nitrogen water-soluble fertilizer in step 4.1) is high-nitrogen macro-element water-soluble fertilizer 30-10-10+TE, and the dosage of high-nitrogen water-soluble fertilizer is 10-15 kg / mu. The spraying method of high-nitrogen water-soluble fertilizer is to dilute the high-nitrogen water-soluble fertilizer 800-1000 times and then spray it on the whole plant, spraying evenly on both sides of the leaves.

7. The method for promoting sugarcane cultivation that simultaneously enhances tolerance to aluminum acid and nitrogen fixation according to claim 1, characterized in that, The acid-tolerant aluminum root fertilizer mentioned in step 4.2) comprises the following components by weight: 36-40 parts charcoal powder, 32-35 parts rice husk, 22-25 parts calcium magnesium phosphate fertilizer, 37-40 parts wood ash, and 15-18 parts seaweed powder.

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