杨干象甲化学防治技术的研究(钱范俊等,防护林科技,1983,1:51—61) 杨干象甲(Cryptorrhynchus lapathi L.)近年在东北杨树人工林猖獗为害。5月虫孔处有红褐色丝状虫粪时进行化学药剂防治,50％辛硫磷乳剂50、100倍液喷干和涂干5天后幼虫死亡率在96％以上,50％杀螟松乳剂50、100倍液涂干死亡率在以98％上,25％马拉硫磷50倍液涂干死亡率为93.9％。 Research on Chemical Control Techniques of Yangganuijia (Qian Fanjun et al., Shelterbelt Science and Technology, 1983,1: 51-61) Cryptorrhynchus lapathi L. has been rampant in poplar plantations in northeast China in recent years. In May, there was a reddish-brown filamentous worms at the wormhole for chemical control. The mortality of 50% phoxim 50, 100 times liquid sprayed and dried for 5 days was over 96%, and 50% fenitrothion emulsion 50,100 times liquid coating dry mortality at 98%, 25% malathion 50 times liquid coating dry death rate was 93.9%.