10%氯噻啉可湿性粉剂防治萝卜蚜虫田间药效试验

2006年在重庆万州进行10%氯噻啉可湿性粉剂防治萝卜蚜虫田间药效试验,结果表明,在萝卜蚜虫发生期,用10%氯噻啉可湿性粉剂100、200、300g/hm2剂量喷雾防治,药后1d的平均防效分别为90.7%、97.7%、99.0%,药后7d的平均防效分别为84.0%、95.6%、97.5%,均优于对照药剂25%乐.氰乳油400mL/hm2处理的防效,持效期达7d以上。从防治效果及经济成本考虑,建议10%氯噻啉可湿性粉剂防治萝卜蚜虫以施药量100～200g/hm2、喷液量600kg/hm2为宜。

Effect of 10% imidaclothiz WP on controlling radish aphid in field trial

In 2006,the experiment on the effect of 10% imidaclothiz WP on controlling radish aphid was carried out in the field in Wanzhou.The results showed that 10% imidaclothiz WP with dosages of 100,200 and 300 g/hm2 had an excellent effect to control the aphids,and the average control effects were 90.7%,98.0%,98.7% and 84.0%,98.0%,98.7% in one day and seven days after spraying treatment,respectively,and the persistent effect reached over seven days.It had better control effect than using 25% dimethoat fenvalerate EC with 400 ml/hm2.So,considering the control effect and economic cost,it suggested that applying 100-200g/hm2 10% imidaclothiz WP with 600kg/hm2 liquid to control the radish aphid was suitable.