Experimental Study on Grassland Vegetation Restoration Technology in Different Degree of Rocky Desertification
The grassland ecosystem is fragile in the area of karst rocky desertification area,which is the most serious eco-geological environmental problem limiting sustainable economic and social development.The experimental results showed that in areas with mild rocky desertification,Lolium perenne,Dactylis glomerata,and Cajanus cajan were mixed in a ratio of 5:2:5;In areas of rocky desertification areas,Lolium perenne,Dactylis glomerata and Festuca arundinacea are mixed in a ratio of 5:5:2;In areas of severe rocky desertifi-cation,the experimental plots mixed with L.perenne,Cynodon dactylon,and Trifolium repens in a ratio of 5:2:5.After three months,there was a significant increase in vegetation cover,plant height growth,plant rich-ness and grass yield compared to the control group.Artificial cultivation of grasslands with different degrees of rocky desertification transforms the trend of rocky desertification into potential rocky desertification,effectively reducing soil erosion and significantly improving vegetation restoration.Artificial vegetation restoration is one of the effective methods for ecological restoration of rocky desertification grasslands.
万方数据
维普
