Biofertilizer for improving saline and alkaline lands and preparation method and application of biofertilizer

Abstract

The invention relates to biofertilizer for improving saline and alkaline lands. The biofertilizer comprises the following components in parts by weight: 200 to 250 parts of fermented mushroom residue, 150 to 200 parts of ammonium sulfate, 50 to 100 parts of superphosphate, 50 to 100 parts of complex improver, 15 to 21 parts of EDTA (ethylene diamine tetraacetic acid)-metallo-chelate, 0.5 to 1 parts of ammonium molybdate and 5 to 10 parts of borax, and also comprises 20 to 30 parts of compound micro-organism, so that the living bacteria count of the biofertilizer is not less than 5.0 * 108CFU (colony-forming unit) per gram. The invention also relates to a preparation method for the biofertilizer and the application of the biofertilizer in crop planting. The biofertilizer for improving the saline and alkaline lands, disclosed by the invention, has important functions of improving the soil conditions of the saline and alkaline lands, improving the soil fertility, increasing crop yield and preventing the soil from secondary salinization.

Description

technical field

[0001] The invention relates to a biological fertilizer for improving saline-alkali soil, especially for soil improvement in saline-alkali land, increasing crop yield and preventing secondary salinization of soil. Background technique

[0002] The main factors affecting crop yield are heredity, ecology (climate, season, soil, etc.), cultivation management and other factors. What is easier to adjust in the production process is soil, fertilizer and water management, which can improve the physical and chemical conditions of the soil through rational fertilization and irrigation, improve the growth environment of crops, and improve the yield and quality of crops.

[0003] Saline-alkali land has low soil nutrient content, and adding fermented mushroom dregs and other organic fertilizers can improve soil composition and structure, enhance soil permeability, and accelerate salt leaching. Apply bacterial fertilizer to increase soil fertility, improve soil structure...

Examples

Embodiment 1-3

[0035] Embodiment 1-3 provides a kind of biological fertilizer for improving saline-alkali land respectively, and its formula is specifically shown in Table 1:

[0036] Biological fertilizer formula described in table 1 embodiment 1-3

[0037]

[0038] EDTA-Mg

[0039] The weight ratio of each component in the composite improver of the above embodiment is humic acid: zeolite: furfural slag: gypsum = 25:15:20:8. The compound microbial agent ensures that the number of effective viable bacteria per gram of biological fertilizer is not less than 5.0×10 8 cfu (preferably 5.5×10 8 cfu), wherein each gram of biological fertilizer contains actinomycetes ≥ 1.5×10 8 cfu, Bacillus megaterium ≥2.5×10 8 cfu, Bacillus subtilis ≥1.0×10 8 cfu.

Embodiment 4

[0041] This embodiment provides the preparation method of the biological fertilizer for improving saline-alkali land described in any one of Embodiments 1 to 3, see figure 1 , including the following steps:

[0042] 1) Weigh the fermented mushroom slag, superphosphate, and ammonium sulfate in proportion, pulverize them to 0.5 mm respectively, and mix them evenly to obtain mixed raw materials;

[0043] 2) Mix actinomycetes, Bacillus megaterium and Bacillus subtilis according to the proportion, and the number of effective viable bacteria per gram of biological fertilizer is not less than 5.0×10 8 cfu;

[0044] 3) Weigh humic acid, zeolite, furfural slag, and gypsum in proportion, grind them to 0.5 mm respectively, and mix them evenly to obtain a composite modifier;

[0045] 4) Add the mixed compound microbial bacterial agent and compound improver to the mixed raw materials, and stir evenly;

[0046] 5) Add EDTA-metal chelate, ammonium molybdate and borax in the mixture, mix w...

Embodiment 5

[0049] Compared with Example 4, the only difference is that the homogeneous mixing in step 5) of this embodiment refers to: stirring once every 40 minutes, once for 15-20 minutes, stirring 3 times in total; the pH value of the fertilizer is controlled to be 5.0- 7.0.

technical field

[0001] The invention relates to a biological fertilizer for improving saline-alkali soil, especially for soil improvement in saline-alkali land, increasing crop yield and preventing secondary salinization of soil. Background technique

[0002] The main factors affecting crop yield are heredity, ecology (climate, season, soil, etc.), cultivation management and other factors. What is easier to adjust in the production process is soil, fertilizer and water management, which can improve the physical and chemical conditions of the soil through rational fertilization and irrigation, improve the growth environment of crops, and improve the yield and quality of crops.

[0003] Saline-alkali land has low soil nutrient content, and adding fermented mushroom dregs and other organic fertilizers can improve soil composition and structure, enhance soil permeability, and accelerate salt leaching. Apply bacterial fertilizer to increase soil fertility, improve soil structure...

Examples

Embodiment 1-3

[0035] Embodiment 1-3 provides a kind of biological fertilizer for improving saline-alkali land respectively, and its formula is specifically shown in Table 1:

[0036] Biological fertilizer formula described in table 1 embodiment 1-3

[0037]

[0038] EDTA-Mg

[0039] The weight ratio of each component in the composite improver of the above embodiment is humic acid: zeolite: furfural slag: gypsum = 25:15:20:8. The compound microbial agent ensures that the number of effective viable bacteria per gram of biological fertilizer is not less than 5.0×10 8 cfu (preferably 5.5×10 8 cfu), wherein each gram of biological fertilizer contains actinomycetes ≥ 1.5×10 8 cfu, Bacillus megaterium ≥2.5×10 8 cfu, Bacillus subtilis ≥1.0×10 8 cfu.

Embodiment 4

[0041] This embodiment provides the preparation method of the biological fertilizer for improving saline-alkali land described in any one of Embodiments 1 to 3, see figure 1 , including the following steps:

[0042] 1) Weigh the fermented mushroom slag, superphosphate, and ammonium sulfate in proportion, pulverize them to 0.5 mm respectively, and mix them evenly to obtain mixed raw materials;

[0043] 2) Mix actinomycetes, Bacillus megaterium and Bacillus subtilis according to the proportion, and the number of effective viable bacteria per gram of biological fertilizer is not less than 5.0×10 8 cfu;

[0044] 3) Weigh humic acid, zeolite, furfural slag, and gypsum in proportion, grind them to 0.5 mm respectively, and mix them evenly to obtain a composite modifier;

[0045] 4) Add the mixed compound microbial bacterial agent and compound improver to the mixed raw materials, and stir evenly;

[0046] 5) Add EDTA-metal chelate, ammonium molybdate and borax in the mixture, mix w...

Embodiment 5

[0049] Compared with Example 4, the only difference is that the homogeneous mixing in step 5) of this embodiment refers to: stirring once every 40 minutes, once for 15-20 minutes, stirring 3 times in total; the pH value of the fertilizer is controlled to be 5.0- 7.0.

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