Sandy cultivated land soil body construction method using straws

Abstract

The invention discloses a sandy cultivated land soil body construction method using straws. The sandy cultivated land soil body construction method comprises the following steps that after crops are harvested, corn straws are crushed to be not more than 10cm, and wheat straws are directly returned to the field; the air-dried straws are buried into the soil body with the depth larger than 35 cm, the straws are buried and compacted till the thickness of the straws is 10-20 cm, soil covering and pressing are carried out at the depth of 0-35 cm, decomposed organic fertilizer nitrogen fertilizer is evenly mixed into fresh wheat straws, the use amount is 2 kg N / mu, and then a microorganism excitation regulator is evenly mixed according to the use amount of 100 kg / mu; the fresh straws, the decomposed organic fertilizer nitrogen fertilizer and the microorganism excitation regulator composition are uniformly mixed with 0-20cm of soil on the surface layer, conventional fertilization and sowing are carried out, uniform sowing and consistent sowing depth are kept, and watering is carried out at proper time after sowing to complete construction; and on the aspect of conversion of organic carbon and nutrients of the plough layer straw, surface accumulation and hardening of organic matters of the straw nutrients can be relieved, oxygen partial pressure can be reduced, accumulation of soil organic matters in the whole plough layer is promoted, and improvement of the soil structure condition of the whole plough layer is facilitated.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a sandy farmland soil construction method using straw. Background technique [0002] It is an important measure to achieve the strategic goal of "storing grain in the ground and storing grain in technology" and ensuring national food security by improving the fertility of medium and low-yield fields. China is the country with the largest population and the largest food consumption in the world, but the per capita arable land resources in our country are in short supply, and as high as 68.8% of the 2.023 billion mu of arable land belongs to low- and medium-yielding fields, which seriously affects the construction of my country's food security system. Excessive sandy soil texture and poor soil structure are one of the main obstacles to cultivated land in my country. Sandy cultivated land has poor soil structure, excessive seepage, poor water and fertilizer ret...

AI Technical Summary

Problems solved by technology

For a long time in the past, straw was mostly used as living fuel and livestock feed, or directly burned in the open air or piled up and abandoned in large quantities randomly, causing serious resource waste and environmental pollution problems.

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