Vegetation restoration method for grassland ecosystem

Abstract

The invention discloses a vegetation restoration method for a grassland ecosystem. The vegetation restoration method comprises the following steps: soil improvement: suspending a three-furrow plough or dragging a five-furrow plough by using a tractor to perform strip-shaped ploughing on a naturally degraded grassland, performing operating along a contour line with the depth of 10-15cm, and then performing raking after ploughing; fertilization: applying corresponding nitrogenous fertilizers, potash fertilizers or phosphate fertilizers according to vegetation growth limiting elements of a grassland land; irrigation: irrigating grassland with a corresponding amount of water according to the rainfall; and reseeding: selecting improved varieties corresponding to the grassland for reseeding, wherein the reseeding quantity corresponds to the grassland degradation degree. According to the method, shallow ploughing is adopted, so that soil becomes loose, the ventilation performance is enhanced, the activity of microorganisms is improved, decomposition of organic matter is promoted, and then the content of available nutrients in the soil is increased. Fertilization can solve the problems that the grassland habitat is severe and some elements are deficient. Excellent forage grass can be sown through reseeding, the defect of passive improvement is overcome, nutrient ingredients of grassland communities are changed, and the nutrient ingredients of the grassland communities are improved.

Description

technical field [0001] The invention specifically relates to a vegetation restoration method for grassland ecosystems. Background technique [0002] As an important part of the terrestrial ecosystem, grassland is one of the most widely distributed vegetation types in the world. However, due to unfavorable natural factors and unreasonable human activities, it occupies the main body of grassland in my country and is regarded as a green barrier in the Beijing-Tianjin-Hebei region. The northern natural grasslands are facing serious degradation challenges. Its degradation is manifested in various degrees of decline in grassland productivity and pasture quality, reduction in biodiversity, intensification of soil "three modernizations", increase in frequency of natural disasters, rampant rodent pests, etc. This series of phenomena has become an environmental and resource problem in northern my country. part that needs to be resolved urgently. . Contents of the invention [0003]...

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Problems solved by technology

[0002] As an important part of the terrestrial ecosystem, grassland is one of the most widely distributed vegetation types in the world. However, due to unfavorable natural factors and unreasonable human activities, it occupies the main body of grassland in my country and is regarded as a green barrier in the Beijing-Tianjin-Hebei region. of northern natural grasslands are facing serious degradation challenges