Soil pollution control and remediation method

Abstract

The invention discloses a soil pollution control and remediation method which includes the steps: mixing pesticide degradation agents and water to prepare into degradation agent solution according to the weight ratio of 1:(300-500) before planting, uniformly applying the degradation agent solution into soil, applying 3-5kg of soil conditioners, uniformly harrowing the soil, and planting crops; additionally applying 3-5kg of soil conditioners for 1-2 times per mu once during crop growth after planting of the crops, mixing organic water soluble fertilizers and water to obtain organic fertilizer solution according to volume ratio of 1: (1000-1500), uniformly spraying the organic fertilizer solution on the leaf surfaces of the crops for 3-5 times, and spraying the organic fertilizer solution before 7-10 days of harvest again. The consumption of the pesticide degradation agents per mu is 3-5kg, and the consumption of the organic water soluble fertilizers per mu is 30-45ml. According to the method, residual pesticides in the soil are degraded by the aid of techniques such as heavy-metal passivation and microbiological degradation, available heavy metals in the soil are passivated and adsorbed, the moisture and fertilizer retention capacity of the soil is improved, soil fertility is improved, and control and remediation can be achieved according to different pollution conditions of the soil.

Description

technical field [0001] The invention relates to soil pollution control, in particular to a method for soil pollution control and restoration. Background technique [0002] Chemical fertilizers and pesticides play a certain role in ensuring the stable yield of crops. However, in recent years, due to the excessive application of chemical fertilizers and pesticides, the soil has been polluted and the yield and quality of crops have been seriously affected. According to relevant statistics, my country's pesticides polluted 9.33 million hectares of farmland soil, and the amount of pesticides used in 2012 alone reached 1.806 million tons, but only about 30% of the amount of pesticides used acted on the target organisms, and the remaining 70% entered the environment or soil. Moreover, heavy metals have polluted more than 20 million hectares of farmland soil. Long-term excessive application of chemical fertilizers will lead to soil acidification and compaction, which will also lead t...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is the

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