几种杀线虫剂对番茄根结线虫的田间药效试验

Control Effect of Several Nematocides on Root Knot Nematode of Tomato

选用几种中低毒杀虫杀线虫剂对番茄根结线虫进行田间药效试验。结果表明:噻唑膦防治番茄根结线虫的效果为76.7%,辛硫磷的防效为65.0%,噻唑磷的防效明显高于辛硫磷。3种阿维菌素类药剂相比较,依维菌素效果最好,防效为71.7%,阿维菌素和甲维盐的防效分别为65.2%和63.9%。依维菌素的防效明显高于阿维菌素与甲维盐,阿维菌素与甲维盐之间防效无显著差异。淡紫拟青霉和厚孢轮枝菌单用的防效分别为36.5%和41.8%,低于化学药剂的水平;淡紫拟青霉和厚孢轮枝菌混用的防效为60.0%,效果显著提高;但是,淡紫拟青霉、厚孢轮枝菌和噻唑磷3种菌药混用,增加噻唑磷却未能显示出防效的进一步提高。

The control effects of several nematocides were tested on tomato root knot nematode.The results showed that the control effect of fosthiazate were 76.7%,much better than the phoxim which was 65.0%.Among 3 kands of avermectins,the control effect of ivermectin,which was 71.7%,was the best.The control effects of avermectins and emamectin were 65.2% and 63.9%,respectively.Both of the control effects of the Paecilomyces lilacinus and Verticillium chlamydosporium were lower than the chemical agent,the control effect of P.lilacinus ＋ V.chlamydosporium was raised significantly.The control effect of P.lilacinus ＋V.chlamydosporium ＋fosthiazate was not raised significantly.