3种除草剂对桉树人工林地中薇甘菊的防除效果

Controlling effect of 3 herbicides on Mikania micranthain for eucalyptus plantation

薇甘菊(Mikania micrantha)在台山市自发生以来逐渐传播蔓延,给林业带来了严重危害。该试验选取了灌薇净、2,4-D和益霖薇净3种除草剂在桉树人工林地中进行喷洒,记录防除后第60天薇甘菊的枯死率,并进行多重比较。结果表明:益霖薇净防除效果最好,防除60d后,薇甘菊枯死率达97%以上,2,4-D次之,灌薇净防效最差。综合考虑树种安全,环境友好和经济效益等方面,建议使用24%益霖薇净水剂防除桉树人工林中的薇甘菊。

Mikania micranthahas spread gradually since its occurrence in Taishan City, which has brought serious harm toforestry. In this experiment,three herbicides including clopyralid, 2,4-D isooctyl ester and picloram,were selected for spraying in eucalyptus plantation,and the death rates of M. micrantha on the60th days after controlwere recorded. The results showed that picloramhad the best control effect. After 60 days,the mortalityof M. micrantha was more than 97%. 2,4-D isooctyl ester took the second place,and clopyralid had the lowest control effect. Considering tree safety, environmental friendliness and economic benefit, it is suggested to use 24% picloram water purifying agent to control M. micrantha in eucalyptus plantation.