Processing method of combination of farming and maintaining for improving farmland soil quality by using maize straw

Abstract

The invention belongs to the technical field of farmland soil quality improvement methods, and particularly relates to a processing method of combination of farming and maintaining for improving farmland soil quality by using maize straw. According to the method, a farmland is divided into 12 parts, all maize straw harvested in the first year during field cultivation are evenly placed in 3 parts of the farmland, a straw decomposition agent is applied, soil coverage is carried out, a shading net covers the outer portion of the farmland, and natural decomposition is carried out until maize harvesting in the second year to obtain a first maize organic fertilizer; maize is planted in the other 9 parts of the farmland during farming, wherein maize is planted by adopting a single-point two-plantplanting method in the farmland adjacent to the maize straw, the processing of the combination of farming and maintaining is carried out for four times in total, it is achieved that free field cultivation of the farmland soil is kept for one year under the condition of not reducing the yield of the maize, maize is not planted during the free field cultivation, and decomposition of the maize strawand organic fertilizer production are carried out, the soil quality is directly improved by the organic fertilizer, one fourth of the farmland is fallow to be maintained each year, and once circulation of the entire fallow field maintenance of the farmland soil is completed in four years.

Description

technical field [0001] The invention belongs to the technical field of methods for improving farmland soil quality, and in particular relates to a planting-breeding combination treatment method for improving farmland soil quality by using corn stalks. Background technique [0002] my country is a country with a large population and agriculture. It uses 7% of the world's land to feed 22% of the world's population. Food issues are always a major issue related to the national economy and people's livelihood. my country has 2 billion mu of arable land and needs about 60 million tons of chemical fertilizers annually. It is the world's largest consumer and importer of chemical fertilizers. According to the calculation of the research department, the average utilization rate of ammonia fertilizer in my country is 30%-35%, phosphate fertilizer 15%-25%, and potassium fertilizer 30%-50%. Most of the fertilizers are fixed or leached by the soil. It is roughly estimated that about 1 mi...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a combined planting and breeding treatment method using corn stalks to improve farmland soil quality, which solves the problem in the prior art that only organic fertilizers are used to improve soil compaction, and the soil is always planted with crops during the improvement period, resulting in low improvement efficiency.

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