A method for preventing and controlling soil erosion in slope land by intercropping corn and Angelica dahurica

Abstract

The invention discloses a method for preventing and controlling water and soil loss of a sloping field by intercropping corn and angelica dahurica, and belongs to the technical field of water and soil environment protecting and crop planting.According to the method, the corn and angelica dahurica which are high in stress resistance, good in water and soil conservation effect and obvious in economic benefit are finally selected for intercropping through massive screening, bio-organic fertilizer is taken as main fertilizer in the planting process, sunlight, rainwater, land saving and the interdependence relation between the plants are fully utilized, the efficient and ecological modes such as grain (the corn) and medicine (the angelica dahurica) intercropping, tall-short matching and shading for growth promoting are adopted, the plant canopy density is increased, the water and soil loss is decreased, and nitrogen and phosphorus loss is controlled and reduced; meanwhile, the disease and pest damage resistance of the grain and the medicine is improved, the yield is increased, and the good ecologic and economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of water and soil environment protection and crop planting, and in particular relates to a method for preventing and controlling soil erosion on slopes by intercropping corn and angelica dahurica. Background technique [0002] Soil erosion leads to the decline of soil fertility and water storage capacity, which is the "source" of agricultural non-point source pollution and water eutrophication. At present, the measures to prevent and control soil erosion on slope land at home and abroad are mainly divided into engineering measures and ecological measures. Engineering measures include building water-blocking ditches, hillside intercepting ditches, slope water storage projects, and terraced fields. Such measures can achieve the purpose of water and soil prevention and control to a certain extent by retaining soil and water storage, but there are problems such as large amount of engineering, time-consuming and ...

AI Technical Summary

Problems solved by technology

Engineering measures include building water-blocking ditches, hillside intercepting ditches, slope water storage projects, and terraced fields. Such measures can achieve the purpose of water and soil prevention and control to a certain extent by retaining soil and water storage, but there are problems such as large amount of engineering, time-consuming and labor-intensive problems. Disadvantages such as unsatisfactory economic and ecological benefits

Ecological measures are divided into soil measures and agricultural measures. Soil measures refer to the application of chemical compounds such as soil improvers and fixatives to the soil to achieve the purpose of improving soil structure, fixing soil, and reducing soil erosion. Such measures to a certain extent It makes up for the time-consuming and labor-intensive shortcomings of engineering measures, but there are also problems such as high labor costs and high ecological risks; agricultural measures are water and soil prevention and control measures implemented on the basis of following the ecological material cycle, including deep plowing, contour plowing, and crop residues. Covering, ridge crop field and hedgerow, etc.

Images