Palygorskite-based composite microbial leaf fertilizer and preparation method thereof
A technology of compound microorganisms and foliar fertilizers, applied in fertilizer mixtures, fertilizers made from biological wastes, nitrogen fertilizers, etc., can solve the problems of poor leaf surface distribution, difficult absorption of fertilizing compounds, and low adhesion.
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[0015] The invention provides a kind of preparation method of the composite microbial foliar fertilizer based on PAL material, and this preparation method comprises:
[0016] 1) Soak PAL (palygorskite) in acid solution, then filter the filter cake for ball milling to obtain PAL powder;
[0017] 2) Hydrothermal reaction of PAL powder, amino acid, cyclodextrin and water to prepare modified PAL;
[0018] 3) Naturally ferment animal and poultry manure, silkworm slough, bacillus, cottonseed hulls and soybean meal, and then add modified PAL to obtain foliar fertilizer.
[0019] In step 1) of the present invention, the amount of each material can be selected in a wide range, but in order to make the prepared foliar fertilizer have more excellent fertility and adhesion, preferably, in step 1), PAL ( The weight ratio of palygorskite) to the acid solution is 1:10-15, and the pH of the acid solution is 6-6.5.
[0020] In step 1) of the present invention, the amount of each material can...
Embodiment 1
[0030] 1) Soak PAL (palygorskite) and acid solution (hydrochloric acid solution) with a pH of 6.3 at a weight ratio of 1:13 at 25°C for 5 hours, then filter and take the filter cake for ball milling (mass of large and small balls The ratio is 2:1.5, the mass ratio of balls to materials is 10:1, the rotation speed is 1800rpm, and the ball milling time is 30min) to obtain PAL powder;
[0031] 2) PAL powder, amino acid (aspartic acid), cyclodextrin and water were hydrothermally reacted at 90°C for 9 hours at a weight ratio of 1:0.4:0.6:18 to prepare modified PAL;
[0032] 3) Naturally ferment animal manure, silkworm slough, Bacillus, cottonseed hulls and soybean meal at 70°C for 13 days, and then add modified PAL to prepare foliar fertilizer A1 (animal manure, silkworm slough, Bacillus, The weight ratio of cottonseed hulls, soybean meal, and modified PAL is 1:0.4:0.2:0.23:1.3:1.2).
Embodiment 2
[0034] 1) Soak PAL (palygorskite) and acid solution (sulfuric acid solution) with a pH of 6 at a weight ratio of 1:10-15 at 15°C for 4 hours, then filter and take the filter cake for ball milling (big balls and small balls The mass ratio of the ball to the material is 2:1.3, the mass ratio of the ball to the material is 10:0.8, the rotation speed is 1500rpm, and the ball milling time is 25min) to obtain PAL powder;
[0035] 2) PAL powder, amino acid (valine), cyclodextrin and water were hydrothermally reacted at 80°C for 8 hours at a weight ratio of 1:0.3:0.5:15 to prepare modified PAL;
[0036] 3) Animal manure, silkworm slough, Bacillus, cottonseed hulls, and soybean meal were naturally fermented at 60°C for 10 days, and then modified PAL was added to obtain foliar fertilizer A2 (animal manure, silkworm slough, Bacillus, The weight ratio of cottonseed hulls, soybean meal, and modified PAL is 1:0.2:0.1:0.2:1:1).
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