Method for treating and controlling desertificated land

Abstract

The present invention relates to a method for controlling desertified land, and starting with the restoring and reconstructing microecologic environment and including the following three steps: (A). making enrichment culture of microbial algae and fungi in the microecologic environment of land block to be controlled; (B) separating out dominant group from them, using modern bio-engineering technique to make large-scale culture, then inoculating the cultured organism into the land block to be controlled; and (C). directly adding nutrient elements necessary for microbial algae and fungi into the land block to be controlled, at the same time planting drought-resistant plants, and utilizing sunshading net to cover and fix then on the controlled land block surface.

Description

1. Technical field

[0001] The invention relates to ecological environment protection engineering technology, in particular to a treatment method for sandy land, desertified land, also known as desertified land. 2. Background technology

[0002] Today, the degradation of soil resources has become a serious global problem. The number of people threatened by desertification in the world is nearly 2 billion, and 5 to 7 million hectares of cultivated land are still turned into deserts every year. my country is one of the countries with the most severe desertification in the world. The total area of ​​desertified land has reached 3.73 million square kilometers, and the annual expansion rate is 2460 square kilometers. The annual direct economic loss due to desertification is as high as 54 billion yuan. The grasslands in Aba Prefecture and Ganzi Prefecture in Sichuan are rapidly desertifying, the large deserts in Gansu, Xinjiang, Tibet and Qinghai are expanding, the grasslands in In...