Preparation method of composite organic fertilizer for improving soil water retention capacity

Abstract

The invention discloses a preparation method of composite organic fertilizer for improving soil water retention capacity. The preparation method includes steps of delivering cow dung, cottonseed meal and water in a fermenting pond and stirring evenly; sealing, fermenting and air-curing the components to obtain pre-fermented cow dung; mixing and stirring microcrystalline cellulose and N, N-dimethyl formamide evenly, adding maleic anhydride to adjust pH value of the system; raising temperature and stirring; adjusting the pH value of the system, filtering and washing the components; adding water; adding anhydrous tartaric acid and trisodium citrate; raising temperature and stirring, drying and smashing the components to obtain modified microcrystalline cellulose; mixing sodium borate and water to perform hydrothermal reaction, centrifuging and drying sodium borate and water; adding biogas residue to stir, place, centrifuge and dry; adding expanded vermiculite, composite trace elements and water to stir and perform hydrothermal reaction; centrifuging and adding modified microcrystalline cellulose, corncob powder and water to stir, dry and grind; adding the pre-fermented cow dung and sterilizing deodorant; prilling and drying the materials to obtain the composite organic fertilizer for improving soil water retention capacity.

Description

technical field [0001] The invention relates to the technical field of compound organic fertilizers, in particular to a preparation method of compound organic fertilizers for improving soil water retention capacity. Background technique [0002] With the frequent and single use of chemical fertilizers, the soil environment is adversely affected. In the absence of sufficient organic matter, the soil aggregate structure is difficult to form, and the adhesion between soil particles is weakened. Water retention capacity, in general large-scale chicken farms, due to the considerable number of chickens, the treatment of cow dung has always been a problem that needs to be solved. Because of a relatively high-quality organic fertilizer, applying cow dung as organic fertilizer to plants will have great Good effect, but the effect of cow manure fertilizer is fast, the loss of nutrients is serious, and the nutrition is relatively simple. Contents of the invention [0003] Based on t...

AI Technical Summary

Problems solved by technology

[0002] With the frequent and single use of chemical fertilizers, the soil environment is adversely affected. In the absence of sufficient organic matter, the soil aggregate structure is difficult to form, and the adhesion between soil particles is weakened. Water retention capacity, in general large-scale chicken farms, due to the considerable number of chickens, the treatment of cow dung has always been a problem that needs to be solved. Because of a relatively high-quality organic fertilizer, applying cow dung as organic fertilizer to plants will have great Good effect, but the effect of cow manure fertilizer is fast, the loss of nutrients is serious, and the nutrition is relatively simple