防治黄瓜根结线虫的药剂筛选及防控技术研究

目的]筛选能够有效防治黄瓜根结线虫的药剂。方法]通过大田试验研究了10%噻唑膦GR、0.5%阿维菌素GR、10.5%阿维菌素·噻唑膦GR对黄瓜根结线虫的防治效果,并提出了黄瓜根结线虫的防控技术。结果]按有效剂量计,10.5%阿维菌素·噻唑膦GR 2 756.25和3 150.00 g/hm2、10%噻唑膦GR 3 000.00 g/hm2、0.5%阿维菌素GR 225.00和262.50 g/hm2对黄瓜根结线虫的防效分别为75.5%、82.0%、78.0%、72.4%和79.5%,可有效防治黄瓜根结线虫的发生,且对黄瓜安全。黄瓜根结线虫的防治应以"化防为主、多种防治相结合"为原则。结论]为根结线虫的防治提供了参考。

Screening on Fungicides against Cucumber Root-knot Nematode and Control Techniques

Objective ] The aim was to screen out fungicides for controlling cucumber root-knot nematode. Method ] Control effects of 10.5% Avermectin · fosthiazate GR, 0.5% Avermectin GR and 10% Fosthiazate GR against cucumber root-knot nematode were studied through field test, furthermore control techniques of cucumber root-knot nematode were put forward. Result ] According to effective dose, the control effects of 2 756.25 and 3 150.00 g/hm2 10.5% Avermectin ~ fosthiazate GR, 3 000.00 g/hm2 10% Fosthiazate GR, as well as 225.00 and 262.50 g/hm2 0.5% Avermectin GR against cucumber root-knot nematode were 75.5%, 82.0%, 78.0%, 72.4% and 79.5% respectively, and they showed good control effects on cucumber root-knot nematode and were safe for cucumber. The control of cucumber root- knot nematodes should be according to principle of ＂mainly chemical control, combining multiple controls＂. Conclusion] The research re- sults provide reference for the control of root-knot nematode.