Method for expanding effective soil of aeolian sandy soil plough layer and reducing soil hardening

Abstract

The invention discloses a method for expanding effective soil of an aeolian sandy soil plough layer and reducing soil hardening. The method specifically comprises the following steps: reserving stubbles with a height of 30 cm in a corn field during corn harvesting; scattering a thoroughly decomposed and fermented organic fertilizer into the corn field; turning over the corn field by using a plowing plough, adjusting a plowing depth of the plowing plough to be 23 cm, and ensuring that the thickness of an original plough bottom layer is 2 cm after the operation is finished; and when the corn field is turned over by the plowing plough, adjusting the angle of ploughshares of the plowing plough to turn over operated vertical soil by 90 degrees. According to the method provided by the invention,effective soil of the plough layer can be increased, water retention and fertilizer retention capability can be improved, physical and chemical properties of can be improved, pollution to undergroundwater can be reduced, and the yield can be improved.

Description

technical field [0001] The invention relates to the technical field of agricultural production, in particular to a method for expanding the effective soil of the plow layer of wind-blown sandy soil and reducing soil compaction. Background technique [0002] With the high-intensity use of agriculture, rotary tillage in windy and sandy soil areas is becoming more and more popular among farmers, especially for many years of continuous rotary tillage and agricultural small four-wheel tractors. and compaction problems are becoming more and more serious. The reduction and compaction of effective soil in the top layer of soil will bring some adverse consequences to agricultural production. The reduction of effective soil and soil compaction in the wind-blown sand plow layer are mainly caused by multiple factors such as the nature of the soil itself, fertilization, irrigation and mechanical compaction. It is necessary to expand the effective soil reasonably in order to ensure the ...

AI Technical Summary

Problems solved by technology

70-80% of the annual rainfall in the sandy soil area is concentrated in July-September, and the rainfall intensity is high, which leads to aggravated compaction of windy and sandy soil under no-tillage measures

Because no-tillage increases the soil bulk density of the plow layer and reduces the porosity of the plow layer soil, it leads to anaerobic soil environment, which is not conducive to the mineralization of the plow layer, and the water, fertilizer, gas and heat in the plow layer soil are not coordinated

The method of deep plowing and breaking the bottom of the plow can effectively increase the effective soil of the plow layer and increase the air permeability of the wind-blown sandy soil, but reduce the ability of the wind-blown sandy soil to retain water and fertilizer, increase the leaching of fertilizers with water, reduce the utilization rate of fertilizers and water, and aggravate the pollution of groundwater