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为有效防治棉花4代棉铃虫,采用44%氯氟·毒死蜱水乳剂、2.5%高效氯氟氰菊酯EC、40%毒死蜱EC 3种药剂进行田间试验。结果表明,44%氯氟·毒死蜱水乳剂148.5、198g·hm-2用药1次7d后防效达80.61%、83.32%,显著优于其他药剂处理。建议生产上使用44%氯氟·毒死蜱水乳剂防治4代棉铃虫,应掌握在棉田棉铃虫卵孵高峰期用药,其推荐使用剂量为148.5~198g·hm-2。
In order to effectively control cotton 4th generation cotton bollworm, a field experiment was conducted using 44% chlorofluorocarbon chlorpyrifos emulsion, 2.5% lambda-cyhalothrin EC and 40% chlorpyrifos EC. The results showed that the control efficacy of 44% chlorofluorocorticoyl chlorpyrifos emulsions 148.5 and 198g · hm-2 were 80.61% and 83.32%, respectively, seven days after treatment for one time, which was significantly better than other drugs. Proposed production of 44% chlorofluorocarbons chlorpyrifos emulsion against four generations of cotton bollworm, cotton bollworm should be in control of the peak hatching period, the recommended dose of 148.5 ~ 198g · hm-2.