Humic acid-compound microbial agent liquid fertilizer conditioner and preparation method thereof

Abstract

The invention relates to a humic acid-compound microbial agent liquid fertilizer conditioner and a preparation method thereof. The humic acid-compound microbial agent liquid fertilizer conditioner comprises the following substances: 93.5 g / L to 163.6 g / L of nitrogen, 80.6 g / L to 85.0 g / L of phosphorus, 84.2 g / L to 100.7 g / L of potassium, 43.1 g / L to 45.4 g / L of humic acid, 108 cfu / kg to 110 cfu / kg of a compound microbial agent and 100 g / L to 150 g / L of a chelating agent. The humic acid-compound microbial agent liquid fertilizer conditioner is used for reducing the content of heavy metals in crops, improving the fertility of soil, improving the physicochemical properties and microbial community structure of the soil, gradually reducing the use of chemical fertilizers, conditioning the nutrient element composition of the soil, promoting the yield increase of the crops, and effectively solving the problems of environmental pollution, nutrition imbalance, soil hardening, secondary salinization and the like caused by long-term excessive application of chemical fertilizer.

Description

technical field [0001] The invention relates to the technical field of treatment and restoration of heavy metal polluted soil, in particular to a humic acid-composite microbial agent liquid fertilizer conditioner and a preparation method thereof. Background technique [0002] The main source of heavy metal content in crops is the absorption and enrichment of plants from the soil. Rice is a special bulk crop that absorbs heavy metals and has strong seed accumulation. The total area of ​​cultivated land in my country is nearly 100 million hectares, of which the area of ​​cultivated land polluted by heavy metals is nearly 20 million hectares, accounting for about 20% of the cultivated land area, which can reduce grain production by more than 10 million tons every year. Due to heavy metal pollution, the contaminated grain is as high as 12 million tons, directly leading to an economic loss of 20 billion yuan. All data show that soil heavy metal pollution has become a major obstac...

AI Technical Summary

Problems solved by technology

Among the several types of measures currently being studied, physical and chemical treatment techniques are mostly used, such as the application of soil heavy metal passivators, high-enrichment plant extraction and other measures, but these two types of technical methods are expensive and may cause secondary pollution; The above measures need to continuously increase the cost input, and the heavy metal elements still exist in the soil and have not been fundamentally eliminated, and the physical and chemical properties of the soil cannot be improved and conditioned; or the farmland needs to be vacated for separate restoration

For soils that are slightly polluted by heavy metals and can meet the conditions for agricultural planting, if the soil is repaired alone, the production cycle of crops will be delayed

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