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防治稻纵卷叶螟田间小区药效试验结果表明,4O%毒死蜱和甲基毒死蜱乳油在稻纵卷叶螟卵孵盛期进行防治,均有优良的防治效果。每亩用40%乳油50毫升的相对防效在85%以上;70~100毫升的防效可达9O%以上,持效期可达10天以上。两者的药效和特效均优于每亩100毫升50%甲胺磷和200毫升的18%杀虫双。
The results of field trials on the prevention and control of rice leaf roller curler showed that 40% of chlorpyrifos and chlorpyrifos were effective in preventing and controlling eggs during the incubation period. 50% per mu with 40% EC 50% relative control effect in more than 85%; 70 ~ 100 ml of anti-effect up to 9O%, persistence of up to 10 days or more. Both efficacy and special effects are better than 100 ml per acre 50% methamidophos and 200 ml 18% insecticidal double.