Tussock Moth Lymantria apicebrunnea has become an insect pest and outbroke as a disaster in Honghe prefecture of Yunnan Province recently. In order to find out a more efficient method to control the insect pest, the field test of powder insecticide Sendebon on the tussock moth is carried out in Hekou County. The results show that the moth Lymantria apicebrunnea is very sensitive to the insecticide Sendebon. The field control effects of 3 different consistencies of the insecticide range from 81. 7% to 95. 9%. Suggested consistencies for the usage of powder Sendebon in the forest are 2500g/hm2 or 5000g/hm2.%褐顶毒蛾近期在云南省红河州爆发成灾.为了寻求更有效的防治措施,在河口县开展了利用森得保粉剂防治褐顶毒蛾的林间药效试验.试验结果表明,褐顶毒蛾对森得保粉剂非常敏感,3种浓度的森得保粉剂林间防治药效达81.7％～95.9％,防治时建议使用2 500 g/hm2和5 000 g/hm2这2种用药量.
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