74.7%草甘膦可溶性粉剂防除杨梅园杂草效果研究

The Control Efficacy of 74.7% Glyphosate Soluble Powder on Weeds in Waxberry Garden

为提高除草剂防除杨梅园杂草的有效性和安全性,进行了草甘膦可溶粉剂防除杨梅园杂草药效的试验研究。结果表明,施用74.7%草甘膦可溶粉剂80～100 g/667m2,施药后40 d株数防效和鲜重防效分别达到82.5%～83.2%和90.1%～90.4%;且正常施用后对杨梅树无明显药害现象,可在湘中地区推广应用。

In order to promote the controlling effectiveness and safety of herbicide on weeds in waxberry garden, an efficacy experiment of 74.7% glyphosate soluble powder was conducted. The results showed that when applying 74.7% glyphosate soluble powder with dosage of 1 200～1 500 g/hm2, the control efficacy for plant number and fresh weight at 40 d after application reached 82.5%～83.2% and 90.1%～90.4%, respectively. Meanwhile, there was no obvious phytotoxicity in waxberry, tree when proper application. Therefore, 74.7% glyphosate soluble powder can be popularized in middle Hunan.