Method for treating soil erosion of slop cropland

Abstract

The invention relates to a soil erosion prevention technology, which is particularly suitable for treating the soil erosion of a soil-layer shallow slop cropland in purple mud and shale development. The method is characterized by digging mother rocks under eroded shallow soil, and cracking the mother rocks by utilizing a farming tool; forming surface fluctuating state by digging a ditch and constructing a ridge along a contour line, digging the mother rocks in the ditch every year, and changing the positions of the ditch and the ridge in the next year; arranging a soil block in the ditch, forming a mother rock separating block by an untapped mother rock zone under the ridge, prolonging the stopping time of rainwater, softening the mother rocks by enabling the mother rocks to be in a soaking or wetting state for a long time, and quickening the weathering and soil forming of mother rock chips. According to the method disclosed by the invention, eroded soil can be quickly complemented, the soil forming of rocks can be improved, the soil-layer thickness can be increased, the investment of manpower and material resources is less, the operation is simple, the application range is wide, and the method is beneficial for increasing the productive force of the slope cropland and ensuring the sustainable development of agriculture.

Description

technical field [0001] The invention relates to a soil erosion prevention and control technology, which is especially suitable for the control of soil erosion on shallow slope cultivated land with purple mud and shale. Background technique [0002] There are more than 20 million hectares of purple soil resources in my country 2 . Purple soil has the characteristics of rich soil nutrients, high natural fertility, suitable for planting, fertilizer and water, etc., but purple soil also has the problems of strong erosion and serious degradation. The purple soil area is one of the areas with the most serious water and soil erosion in my country. Strong soil erosion leads to only 10-20 cm thick soil layer at the top of most hills in slope farmland, which significantly reduces soil fertility and crop yield. At present, the main methods used to prevent and control soil erosion in purple soil include changing slopes to terraces, hedgerows, and tillage measures, among which tillage ...

AI Technical Summary

Problems solved by technology

In order to increase the thickness of the soil layer at the top of the slope and increase the productivity of the land, soil removal and fertilization have also been carried out on the sloping farmland in the purple soil area, but this method of transporting other landscapes or the soil at the foot of the slope to the top of the slope requires a lot of manpower and material resources. Increasingly inappropriate in the absence of labor and may also affect soil quality in excavated areas or have other environmental impacts

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