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盗毒蛾是目前桑树果树上普遍存在的一种害虫。秦皇岛地区一年发生两代,以2—5令幼虫在树上的残存落叶处及树皮缝内越冬,其活动最低温度为10℃,最适温度为25.5℃。据1986年调查:危害率是93.9％,因此采取合理有效的措施防治已成为目前急待解决的问题。通过两年来的观察和实践,笔者认为:除力主农业防治外,合理地使用化学药剂如50％辛硫磷2000—3000倍液等防治也是切实可行的方法。
Poison moth is currently a common pests on mulberry fruit trees. Occurred in Qinhuangdao two generations a year, with 2-5 so larvae in the tree leaves and bark stump seams overwintering, the activities of the minimum temperature of 10 ℃, the optimum temperature of 25.5 ℃. According to the survey in 1986: the hazard rate was 93.9%, so taking reasonable and effective measures to prevent and control it has become an urgent issue to be solved. Through two years of observation and practice, the author believes that: In addition to the main agricultural prevention and control, the rational use of chemical agents such as 50% phoxim 2000-3000 times and other prevention and control is also a viable method.