Method for controlling stony desertification through biological engineering

Abstract

The invention discloses a method for controlling stony desertification through biological engineering. The method comprises a step of planting vetiveria zizanioides and paspalum natatum, wherein the vetiveria zizanioides and the paspalum natatum are intercropped; and the vetiveria zizanioides is planted along the outer rings of contour lines, and the paspalum natatum is planted among the vetiveria zizanioides. Because of the mutual tropism and the compatibility of the spatial and temporal distribution of roots, the two grasses are mutually beneficial, the nutrient resources can be utilized at high efficiency, the effective utilization of nitrogen and phosphorus is effectively improved, and the efficiency of improving the rocky desertification lands is greatly improved. The vetiveria zizanioides has nodule bacteria, so that wasteland hills can become terraced fields with fertile deep soil layers through the interception of the hedgerow of the vetiveria zizanioides layer by layer after the vetiveria zizanioides is continuously planted for multiple years; the paspalum natatum is in favor of accumulation of humus; after the lands are covered with the paspalum natatum, the effects of suppressing weed germination are realized; and the dead developed roots and the dead stems of the aboveground parts are decomposed in the soil to form the humus, so that the purposes of zero-ploughing, improving the physical and chemical properties of the soil and increasing the nutrients of the soil are realized without intertilling and weeding.

Description

technical field [0001] The invention relates to the technical field of rocky desertification control methods, in particular to a method for controlling rocky desertification through bioengineering. Background technique [0002] Desertification is a worldwide ecological and environmental problem. my country is one of the countries with severe desertification in the world. According to the results of the national desertification survey, the desertification land area in my country is 2.622 million square kilometers, accounting for 27.4% of the country's land area. Nearly 400 million people are affected by it. Effects of desertification. Among them, rocky desertification, which is the most difficult to control in desertification, is due to the continuous destruction of natural vegetation over a long period of time, large-scale steep slope reclamation, resulting in exposed surface, and thin soil layer in mountainous areas, shallow exposure of bedrock, strong scouring force of hea...

AI Technical Summary

Problems solved by technology

In addition, due to the lack of vegetation in the rocky desertification area and the inability to conserve water sources, it is often accompanied by serious drinking water difficulties for humans and animals. The rocky desertification phenomenon that occurs after the continuous loss of water and soil resources will not only deteriorate the agricultural production conditions and ecological environment, but will also cause the masses to lose their livelihoods. The basic conditions of survival, many places have to consider ecological immigration

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