Experimental study of degenerated grassland improvement in plateau area

An experiment was conducted for degenrated grassland in order to improve living condition of grassland plant. The result revealed that the quick acting fertilizer of soil was increased by three grassland improvement methods. Among the methods used, The fertilizer applying appeared to be the best, which increased the proportion of fine herbage in the grass sward. Grasses, legumes and nutgrasses increased 9.02%10.17%,18.40%27.76% and-6.57%1.87% respectively compared with ck; plantable herbages increased by 100%. The second was the pasture fencing, the proportion of the grasses and legumes possessing in the grass sward increased 26.81%39.85% and 20.74%37.85%respectively than ck, nutgrasses decreased 11.85%19.23% than ck; the plantable herbages increased by 100%. The third was turf cutting, the proportion of the grasses and legumes increased 18.17%23.86% and 19.85%48.10% than ck; nutgrasses decreased 4.70%8.92% than ck; the plantable herbages increased 34.889.7% than ck. Thus the fertilizer applying improvement and the pasture fencing were the good ways of grassland improvement.