Soil conditioner for repairing polluted soil

Abstract

The invention provides a soil conditioner for repairing polluted soil. The soil conditioner is prepared by mixing the following raw materials in percentage by weight: 1-2.5% of a compound microorganism agent, 60-75% of an organic matter, 25-45% of a medium trace element soil conditioner and 5-20% of a macromolecular organic compound, wherein the macromolecular organic compound consists of poly gamma-glutamic acid and humic acid; and humic acid comes from high-quality lignite. The soil conditioner provided by the invention has the effects of improving soil, degrading soil pesticides and residual fertilizers, passivating and fixing farmland heavy metals, reducing adsorption of plants to heavy metals and improving the crop yield and quality, is used for repairing and controlling farmland pollution, and has such remarkable functions of fertilizer supply, soil improvement, soil-ripening progress acceleration, and crop yield and quality improvement.

Description

technical field

[0001] The invention relates to a soil conditioner, in particular to a soil conditioner for remediating soil pollution. Background technique

[0002] At present, the overall situation of soil pollution in China is quite severe. In December 2013, the Ministry of Environmental Protection and the Ministry of Land and Resources conducted the first large-scale and large-scale survey on the country's soil pollution situation. According to the final survey results, the following conclusions can be drawn : my country's current soil environment situation is already very severe, and various regions are facing different degrees of soil problems, and the situation in some regions is particularly prominent. According to statistical data, the total point exceeding standard rate of soil in my country is 16.1%. From the perspective of soil use types, the corresponding point exceeding rates of various types of land in my country at this stage are: 20.4% for cultivated land soi...