24%的溴虫腈防治茶尺蠖和假眼小绿叶蝉药效试验研究

Study on the Control Effects of 24% Chlorfenapyr SC Against Ectropis Obliqua Warren or Empoasca vitis

应用1 000,1 500,2 000倍的溴虫腈药液与常规对照化学农药1 000倍的联苯菊酯、1 500倍的吡蚜酮,进行田间防效小区对比试验。结果表明,1 000,1 500,2 000倍溴虫腈药液对茶尺蠖的药后1 d防效分别为94.5%,91.0%,83.0%;14 d防效为95.95%,93.89%,85.27%;而对比的农药联苯菊酯药后1 d为69%,药后14 d为71.04%。对假眼小绿叶蝉的药后1 d效防效分别为96.65%,94.93%,88.76%;药后14 d防效为91.5%,90.17%,89.69%,而对照农药吡蚜酮药后1 d防效为88.50%,药后14 d仅为54.14%。说明溴虫腈对茶尺蠖及假眼小绿叶蝉等茶园害虫有高防效及较长的持效期,可在无公害茶园推广使用。

In order to study the control effect 24% chlorfenapyr SC on Ectropis obliqua Warren or Empoasca vitis, the research applied 1 000,1 500,2 000 times solution of chlorfenapyr to conduct field control effectiveness test, compared with 1 000 times bifenthrin or 1 500 times pymetrozine respectively. The results showed that：to Ectropis obliqua Warren,the 1 000, 1 500, 2 000 times solution of chlorfenapyr had control effect of 94.5%, 91.0% and 83.0% 1 day after treatment;95.95%,93.89% and 85.27% 14 days after treatment,the 1 000 times bifenthrin had control effect of 69% and 71.04% in the same time.To Empoasca vitis, the three treatments had control effect of 96.65%,94.93% and 88.76% 1 day after treatment; 91.53%,90.17% and 89.69% 14 days after treatment ,the 1 500 times pymetrozine had control effect of 88.50% and 51.14% in the same time. The chlorfenapyr had good control effect on Ectropis oblique Warren and Empoasca vitis,was worth to use widely in non-pollution tea garden.