Soil improvement method

Abstract

The invention relates to the field of soil improvement, in particular to a soil improvement method. Idle land is deep plowed, inorganic adsorbents, chelating agents and biological adsorbents are uniformly applied, the land is leveled and properly irrigated, and the treated land is idled for four to six months and then can be used for planting again. The method is short in soil improvement period, rapid in effect, moderate in improvement cost and high in land applicability. The method has the advantages that soil pollution states can be rapidly improved, heavy metal pollution improvement effects are the best, soil permeability water-retaining properties are improved, soil carbon sink is increased, pesticide residues and heavy metal of soil are degraded to meet organic planting requirements, organic conversion of the soil can be rapidly finished, the soil improvement period is short, the effects are rapid, cost can be controlled, organic planting standards can be met basically within six months, bad conditions of the soil are improved, the quality of planted food is directly changed, and fitness of people is benefited.

Description

technical field [0001] The invention relates to the field of soil improvement, in particular to a soil improvement method. Background technique [0002] In the process of traditional agricultural planting, a large amount of pesticides and chemical fertilizers are often applied. Long-term application of large amounts of pesticides and chemical fertilizers will not only cause soil fertility to decline and productivity to decline, but also destroy the soil aggregate structure, reduce porosity, and increase bulk density. Reduced water retention and air permeability will also cause problems such as accumulation of heavy metals and serious salinization in the soil. For example, in a protected area, pesticides and chemical fertilizers have been applied during the planting process for more than 5 years. The physical and chemical properties of the soil are: organic matter content 2-4%, heavy metals exceeding the secondary standard in the soil environmental quality standard GB15618 2-...

AI Technical Summary

Problems solved by technology

[0006] For soil heavy metal pollution, there are not many existing treatment methods. Basically, they cut off the source of heavy metal pollution and naturally absorb it from the soil through plant production and metabolism. This method usually takes three to five years to be effective, and the cycle is too long