“高巧”拌种法防治马铃薯蚜虫试验研究

CONTROLLING APHID OF POTATO WITH GAUCHO 70%WS

“高巧” 70 %干种衣剂是由德国拜耳公司研制并投放中国市场的一种全新化学类别———氯烟酰胺类的杀虫种子处理剂。它具有极强的内吸性 ,兼具触杀和胃毒作用。通过田间小区试验表明 ,使用剂量按 30～ 4 0 g药 / 10 0kg种薯比例 ,采用拌种法 ,杀虫率为 80 %～ 10 0 % ,残效期长 ,对蚜虫控制时间长达 4 2d ,一次处理可代替 3～ 5次喷药 。

Gaucho 70% with systemic,contact and protective effect,is a product manufactured by Bayer company in Germany and available in China markets.It is a new kind of seed treatment insecticide.According to plot trial,the number of aphids on potato plants was reduced by 80%～100% compared with control plants when 100 kg seed potatoes were treated with 30～40 g Gaucho.The insecticide effect could last for 3 months after planting or 42 days after first survey for aphids.Seed treatment with Gaucho was comparable to 3～5 times spraying in effect,so Gaucho is worthy of attention and adoption for the control of potato aphids.