应用除草剂防除草地狼毒对草地植被的影响研究

Study on the Influence of Applying Herbicide to Control Stellera chamaejasme on Grassland Vegetation.

为有效灭除草地狼毒 ,应用 2种复合剂进行了 3年的化学防除草地狼毒的试验研究。结果表明 ,当年灭除狼毒地上部分干枯死亡 ,生长点坏死 ,灭除率达 90 .0 %以上。死亡狼毒的根部腐烂坏死 ,返青率为 0 .0 %～ 2 .3% ,达到整株灭除。优良牧草含量和产量提高 ,分别增加 6 .0 %和1.4 %～ 9.1%。

Experiments with 2 kinds of compounds herbicides were conducted to control Stellera chamaejasme for 3 years in order to efficiently eradicate it in the grassland. The results showed that the aboveground part of drown plant withered and died, the growing points were necrosis, the control efficiency were more than 90%. Only 0.0%～2.3% of the drown plant could only turn green because other root necrosised and decomposed. It could improve the yield and composition of herbages, and the content of herbages increased by 6.0%, the yield increased by 1.4%～9.1%.