Sandy soil conditioner and preparation method thereof
The technology of soil conditioner and compound microbial inoculant is applied in the field of sandy soil conditioner, which can solve the problems of unbalanced nutrient content of straw, reduce product cost, long composting cycle, etc., so as to improve water absorption and storage capacity, avoid pollution, Long lasting effect
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[0027] The preparation method of sandy soil improver of the present invention comprises the following steps:
[0028] a, stalk pretreatment: according to the weight ratio, mix the crop stalks with a particle size≤1.2cm after crushing: 5~15wt% dilute sulfuric acid=1:1~3, mix them in a 0.1~0.3MPa autoclave for 120~ Heating at a constant temperature of 125°C for 1.5-2.5h, washing and sterilizing the stalks with water until the stalks become neutral, drying, and ready to use; wherein, drying is preferably at 60°C;
[0029] b. Preparation of single-strain seed liquid: prepare liquid culture medium for Bacillus subtilis, Candida, white-rot fungus, and Aspergillus niger respectively, take a ring of bacterial lawn from the solid slope of each strain at different times, and then insert them respectively Liquid culture medium, at 25-28°C, shake culture at a rate of 120r / min, to ensure that the logarithmic growth phase of the four bacteria is at the same time, that is, to obtain the seed...
Embodiment 1
[0057] 1) Preparation of straw raw materials
[0058] Crush the crop straw, mix it with 10% dilute sulfuric acid at a mass ratio of 1:2, heat it in an autoclave at a constant temperature of 121°C for 2 hours, then wash the straw with water until neutral, filter it, and dry the straw at 60°C for use.
[0059] 2) Solid-state fermentation of compound microbial agents
[0060] ① Preparation of single-strain seed solution
[0061] Prepare liquid medium for Bacillus subtilis, Candida, white rot fungus, and Aspergillus niger, take a ring of lawn from the solid slope of each fungus at different times, and insert them into the liquid medium respectively, at 25-28°C, 120r / m Shake culture for 1 min, so that Aspergillus niger and white rot fungus were cultured for 40 hours, Candida was cultured for 15 hours, and Bacillus subtilis was cultured for 11 hours to reach the same time, and the seed liquid of each bacterial species in the late logarithmic growth period was obtained.
[0062] ②P...
Embodiment 2
[0071] 1) Preparation of straw raw materials
[0072] Crush the crop straw, mix it with 10% dilute sulfuric acid at a mass ratio of 1:2, heat it in an autoclave at a constant temperature of 121°C for 2 hours, then wash the straw with water until neutral, filter it, and dry the straw at 60°C for use.
[0073] 2) Solid-state fermentation of compound microbial agents
[0074] ① Preparation of single-strain seed solution
[0075] Prepare liquid medium for Bacillus subtilis, Candida, white rot fungus, and Aspergillus niger, take a ring of lawn from the solid slope of each fungus at different times, and insert them into the liquid medium respectively, at 25-28°C, 120r / m Shake culture for 1 min, so that Aspergillus niger and white rot fungus were cultured for 40 hours, Candida was cultured for 15 hours, and Bacillus subtilis was cultured for 11 hours to reach the same time, and the seed liquid of each bacterial species in the late logarithmic growth period was obtained.
[0076] ②P...
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