Intersecting-free straw strip-shaped return-to-field cultivation method for maize tillage

Abstract

The invention discloses an intersecting-free straw strip-shaped return-to-field cultivation method for maize tillage. The method includes the steps that 1, before crop seeding is performed, crop strawof a last season is smashed in situ, ridge clearing and strip gathering are performed for the first time, straw at strip gathering positions is mixed and stirred in a soil layer, first seeding stripsare formed at ridge clearing positions, and first return-to-field strips are formed at the strip gathering positions; 2, before crop seeding of a next season is performed, crop straw is smashed in situ, ridge clearing and strip gathering are performed for the second time, the straw at strip gathering positions is mixed and stirred in a soil layer, second seeding strips are formed at ridge clearing positions, and second return-to-field strips are formed at the strip gathering positions; in the two adjacent planting seasons, the positions of seeding strips and the return-to-field strips are interchanged or the second seeding strips horizontally move to the first return-to-field strips to form strip spacing tillage. The arable layer structure of virtuality and reality alternating is created,and the method has the advantages of non-tillage and deep tillage, effectively solves the key problems in straw returning to the field, and is also an effective way for construction of a reasonable arable layer on dry land and promotion of soil fertility.

Description

technical field [0001] The invention belongs to the technical field of farmland soil fertilization and cultivation, and relates to a method for cultivating corn tillage-free staggered straw strip-shaped returning, in particular to a corn tillage-free staggered straw strip-shaped return that improves soil water storage, water supply, and moisture conservation capabilities, and ensures high and stable yields of crops. Field cultivation method. Background technique [0002] my country's dry land area is 1.109 billion mu, accounting for 56.8% of the country's total cultivated land area. It is mainly distributed in the main grain-producing areas of Northeast China, North China, and Northwest China. Its crop production has important strategic significance for ensuring national food security. However, in the past 30 years, the continuous small-scale agricultural machinery shallow plowing and the predatory production mode of reusing farmland and ignoring cultivation have caused prob...

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Problems solved by technology

However, in the past 30 years, the continuous small-scale agricultural machinery shallow plowing and the predatory production mode of reusing farmland and ignoring cultivation have caused problems such as shallowing of the soil plow layer, upward movement of the plow bottom layer, weakening of the soil buffer capacity, and conflicts between water, fertilizer, air, and heat. The resulting problems such as low crop yield, large inter-annual variation of yield, and decline in resource utilization efficiency are also becoming more and more serious. The deterioration of the soil plow layer environment has become a key bottleneck restricting high and stable crop yields and efficient use of resources.

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