毒死蜱取代甲胺磷防治桑园害虫效果探讨

Effect on Control of Mulberry Pests with Chlorpyrifosto Replace Methamidophos

通过夏、中秋两期试验表明毒死蜱对桑螟、桑尺蠖的防治效果、安全用叶期等方面与甲胺磷相近,在桑园治虫上可以取代被禁用的甲胺磷。防治桑尺蠖,推荐浓度1500倍;防治桑螟,可放宽到3000倍。

Two trials,in summerand mid-Autumn,showed thatchlorpyrifoswassimilarto methamidophosin the effecton controllingmulberry pyramid and mulberry lopperand duration forsafe use ofmulberry leafforsilkworm.Itcan replace methamidophoswhich wasforbidden in practicalapplication.Itwassuggested thattheconcentra-tion of1500timesmight beused to controlmulberry pyramid,and3000timesto mulberry lopper.