Biochar-based microbial soil conditioner and preparation method thereof

Abstract

The invention discloses a charcoal-based microbial soil conditioner. The charcoal-based microbial soil conditioner comprises, by weight, 80-85 parts of charcoal, 10-13 parts of a composite microbial flora and 1-2 parts of an oxidized starch adhesive, and the composite microbial flora comprises photosynthetic bacteria, actinomyces, lactic acid bacteria, microzyme, Bacillus subtilis and Bacillus thuringiensis. The invention also discloses a preparation method of the charcoal-based microbial soil conditioner. The combined effect of charcoal and microbes alleviates soil acidification, reduces the unit weight of soil and increases the permeability and the water content of soil; soil organic matter formation is promoted to improve the validity of mineral elements; and the abundance of microbes at the rhizosphere of crops is cultivated to improve the rhizospheric environment of plants in order to make pathogen microbes difficultly grow and breed, so the insect diseases of crops is reduced, and soil heavy metal pollution is alleviated and restored.

Description

technical field [0001] The invention relates to agricultural fertilizers, in particular to a biochar-based microbial soil improver, and also relates to a preparation method of the biochar-based microbial soil improver. Background technique [0002] According to the results of the 2014 "China Cultivated Land Quality Grade Survey and Assessment", the areas of superior land, high-grade land, medium land and low-grade land in my country accounted for 2.9%, 26.5%, 52.9% and 17.7% of the total national cultivated land assessment area respectively. Among them, the area of ​​middle and low-grade cultivated land accounts for 70.6% of the assessed cultivated land area, indicating that the quality of cultivated land in my country is generally low. The comprehensive research results also show that the overall level of China's cultivated land quality tends to decline. Zhao Qiguo believes that the soil quality of China's cultivated land is declining: the average organic matter content of...

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Problems solved by technology

Yu Zhenguo pointed out that the main reasons for the decline in the quality of cultivated land in China are: first, non-agricultural construction occupies good land, and the compensation for reclamation is inferior quality, resulting in a decline in the overall quality of cultivated land; Third, the aggravated degradation of arable land has caused the quality of arable land to continue to decline; fourth, the system of arable land property rights is not perfect, management is not in place, and there is no long-term and good profit expectation for operating arable land, which leads to predatory use or random abandonment, which aggravates the decline in arable land quality

At the same time, large quantities of industrial waste water, waste residues, waste gas, and unreasonable use of agricultural mechanization, pesticides, fertilizers, and agricultural films have led to soil pollution, soil compaction, serious pesticide residues, and the expansion of agricultural non-point source pollution. These problems have further aggravated the soil decline in quality

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