摘要
在室内和林间,对速灭灵烟雾剂(有效成份为氰戊菊酯)防治马尾松毛虫进行了研究。该药作用方式以触杀为主,林间喷施受药松针杀虫持效7天以上,耐雨淋较理想,每亩有效成份用量1—1.6克,5龄以下幼虫受药60秒以上,有较好防效。与常规地面乳油喷雾相比,防治效果略优,提高工效3—4倍,降低成本43.3%,且不受水源、树高条件限制。本文还探讨了主要林地类型条件下的基本施药技术措施。
Sumielin, a smoking insecticide with fenvalerate as the effectiveingredient, was tested aganist the Massons pine caterpillar, Dendrolimuspunctatus, both in laboratory and in forest. Contact toxicity was determinedas the primary action markes. It lasted for more than 7 days when sprayedin foresty and was rainfast. The effective dosage was 1--1. 6g/mu. Contactof 5th or younger instar larvae for over 60 seconds resulted in good effic-acies. As compared to conventional ground spray of oil emulsion, the smokinginsecticide caused higher mortalities, with working efficiency increased by3--4 times, and cost decreased by 43.3%. Operative technology for applyingthe insecticide under various forest conditions is discussed in the presentpaper.
关键词
松毛虫
速灭灵烟雾剂
防治
马尾松
Masson's pine caterpillar
Chemical control
Sumielin
Smoking insecticide
