红棕象甲幼虫化学防治研究

摘要

针对红棕象甲的生物学特性,采用灌根法、灌淋法、打孔注药法和熏蒸法等化学防治方法对红棕象甲幼虫进行了野外防治试验.结果表明,防治效果依次为:熏蒸法＞打孔注药法＞灌淋法＞灌根法.用磷化钙以每株树9.6g的剂量进行根部熏蒸,5d后防效达83.03％,可在生产中推广应用.%According to the bionomics of the red palm weevil Rhynchophorus ferrugineus (Olivier), chemical control methods of root-irrigation, topical application, hole injection and fumigation were carried out on the larvae in the field. Results showed that the control effect were: fumigation>hole injection >topical application>root-irrigation. The control effect of fumigation could reach 83.03% in the dose of 9.6 g per tree after 5 days.