Excitation type straw in-situ inter-row burying returning-to-field land power cultivation method

Abstract

The invention relates to an excitation type straw in-situ inter-row burying returning-to-field land power cultivation method. The excitation type straw in-situ inter-row burying returning-to-field land power cultivation method comprises the following steps that after crops are harvested, corn straws are crushed by a straw crusher, and wheat straws are directly returned to the field; nitrogen fertilizer is uniformly mixed into the straw, and then a microbial excitation regulator is uniformly mixed according to the dosage of 100 kg / mu; then inter-row ditching is carried out, the distance between the straw burying rows is 60 cm, the digging depth is 30 cm, and the crop sowing row spacing is 40 cm; a straw, nitrogen fertilizer and microbial excitation regulator composition is buried into ditches, and then covering with soil and pressing are carried out; the nitrogen fertilizer is applied in corn-wheat rotation dry land soil, residual nitrogen fertilizer is topdressed in the elongation stage and the filling stage in the corn season according to the ratio of 4 : 6, and phosphate fertilizer and potash fertilizer are topdressed in the seedling establishment stage of the residual nitrogen fertilizer in the wheat season; and finally, sowing and pressing are carried out, it is guaranteed that sowing is uniform, sowing depth is consistent, covering is tight, watering is carried out in good time after sowing, soil settlement is accelerated, and straw organic carbon and nutrients are promoted to be converted into soil.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a stimulating method for cultivating soil fertility by burying straw in situ between rows and returning to the field. Background technique [0002] Crop straw is an important biological resource in agricultural production, which is related to sustainable development issues such as soil fertility, soil and water conservation, environmental safety, and effective utilization of regenerative agricultural resources in the entire agricultural ecosystem. China is one of the countries with the most abundant straw resources. It is estimated that in 2015, the output of major crop straws in the Huang-Huai-Hai region reached about 150 million tons, of which the output of grain crop straws accounted for more than 70%, while the output of corn and wheat straw accounted for 43.4% (wheat and corn Both are 21.7%). For a long time in the past, straw was mostly used as domesti...

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Problems solved by technology

[0003] Although many studies have shown that straw returning has the potential to improve soil fertility and increase crop nutrient absorption and yield, there are still a series of problems in straw returning, such as affecting seedling emergence, reducing the water and fertilizer retention capacity of surface soil, and a large amount of straw returning to the field. Leading to excessive carbon input, disturbing the soil microbial system, etc., resulting in a decrease in crop yield, so the positive and negative effects of straw returning to the field have not been conclusive

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