Soil repair agent and preparation method thereof

Abstract

The invention relates to repair and protection technologies for agricultural soil pollution and quality degradation and in particular to a soil repair agent and a preparation method thereof. The soilrepair agent comprises the following components in parts by weight: 9-25 parts of cross-linked gamma-poly glutamic acid, 10-20 parts of probiotics liquid, 1-10 parts of pesticide detoxifying enzymes and 40-80 parts of an adsorbent. According to the soil repair agent disclosed by the invention, the pesticide detoxifying enzymes, poly-glutamic acid, probiotics and organic matters are effectively combined, and pesticide residues in the soil are decomposed by utilizing the pesticide detoxifying enzymes, so that soil environment deterioration caused by pesticide residues can be effectively contained, and beneficial microorganisms are prevented from being killed; by utilizing complexing property and biocompatibility of the poly-glutamic acid, plant root development is promoted, the root absorption capacity is enhanced, and the crop resistance is improved; physical and chemical properties and granular structures of the soil can be repaired by utilizing the organic matters, and the soil fertilizer and water retaining capacity is improved.

Description

technical field [0001] The invention relates to restoration and protection technology of agricultural soil pollution and quality degradation, in particular to a soil repair agent and a preparation method thereof. Background technique [0002] Facility agriculture refers to effective production with certain facilities that can improve or create suitable meteorological environment factors in a local area and provide good environmental conditions for crop growth and development. According to the "National Development Plan for Key Areas of Vegetable Facilities (2015-2020)" issued by the Ministry of Agriculture, by the end of 2013, the area of ​​vegetable facilities in my country was nearly 3.7 million hectares, the output of facility vegetables was about 250 million tons, and the per capita possession was more than 180 kilograms, accounting for about The development of the facility vegetable industry provides an important guarantee for the annual balanced supply of vegetables in ...

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Problems solved by technology

[0003] However, the high multi-cropping index of facility vegetable production, the large input of production materials such as pesticides, chemical fertilizers, and organic fertilizers, and the special production and planting environment lead to a series of problems in facility vegetable soil: such as excessive pesticide residues, soil salinity The occurrence of the above problems leads to poor root development, weak absorption capacity, dead seedlings and stiff seedlings, and soil-borne diseases are more common, and the quality and yield of crops are seriously affected; The ecological environment deteriorates and the quality declines, seriously affecting the sustainable development of facility vegetables

[0004] At present, there are mainly two types of soil remediation agent products on the market, and the functions are relatively single. One type can only adjust the pH value of the soil and supplement a small amount of micro-elements. However, the absorption of micro-elements by crops mainly depends on the activities of soil microorganisms. The microbial content in the soil is very low, which cannot promote the absorption of medium and trace elements.

Another type of microbial soil remediation agent focuses on the supplement of beneficial microorganisms, but ignores the large amount of pesticides remaining in the soil, especially fungicide pesticides are devastating to the microbial population, so simply increasing the amount of microorganisms in the soil is also not working well

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