Karst rocky desertification area forest-grass intercropping method

Abstract

The invention belongs to the technical field of ecological environment protection, and discloses a karst rocky desertification area forest-grass intercropping method. A terrace-shaped dry land formed in a slope-to-terrace mode is used for planting a local variety of Chinese prickly ash according to procedures, leguminous plants, namely calabar beans, are intercropped in the early stage of planting, and the calabar bean plants harvested at proper time are chopped to serve as green manure which is buried into soil along ditches dug around tree crowns; the Chinese prickly ash which is three years old or older is intercropped with sweet grass, special cattle and sheep breeding is developed, and karst rocky desertification valley region slope-to-terrace forest-grass intercropping is completed. The calabar beans have the nitrogen fixation function, can improve the soil, are high in closing speed and can conserve water and soil; the characteristics that the sweet grass is rich in foliage, high in grass yield, high in forage quality and long in service life are used, the sweet grass can be harvested and used many times in a year, the virtuous cycle taking both social benefits and ecological benefits into consideration is achieved, and the karst rocky desertification valley region slope-to-terrace forest-grass intercropping process is completed. The method can effectively increase the soil water content in the ecological benefit aspect, improves the soil fertility and reduces the water and soil loss.

Description

technical field [0001] The invention belongs to the technical field of ecological environment protection, and in particular relates to a forest-grass intercropping method in a karst rocky desertification area. Background technique [0002] The karst environment is a unique geographical landscape in the natural environment, with its dual structure as the basic feature, forming a fragile ecological environment. The distribution area of ​​karst landforms in the world is about 22 million km 2 , accounting for about 15% of the land area, mainly concentrated in low-latitude regions, and concentrated contiguous karsts are mainly distributed in central and southern Europe, eastern North America and southwestern China. As we all know, on the one hand, due to the comprehensive influence of special geological climate and other environmental factors, the karst area in Southwest my country has the advantages and disadvantages of environmental factors, the diversity and harshness of the ...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: although the existing models have achieved certain results, there are also contradictions that cannot solve the ecological and people's livelihood problems in the short term

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