淋灌法和挂包法防治红棕象甲不同药剂效果比较

Comparison of the effect of different pesticides against Rhyncophorus ferrugineus with drenching and hanging bag methods

为了有效地防止红棕象甲Rhyncophorus ferrugineus的危害和传播,采用淋灌法和挂包法研究了不同药剂对红棕象甲的田间防治效果。16%喹硫磷·丁硫克百威乳油稀释400倍淋灌处理,红棕象甲幼虫、蛹和成虫的校正死亡率8 d后分别为94.26%,89.37%和93.45%,15 d后为97.77%,92.36%和95.51%。45%啶虫脒·杀虫单淋溶性粉剂采用挂包法20 g/株处理,红棕象甲幼虫、蛹和成虫的死亡率8 d后分别为95.46%,87.66%和93.31%;15 d后分别为98.56%,92.41%和95.73%;30 d后分别为99.62%,94.57%和97.77%。研究表明用挂包法和淋灌法防治钻蛀性害虫红棕象甲是切实可行的。

In order to effectively prevent the damage and spread of Rhyncophorus ferrugineus, drenching and hanging bag methods were used to evaluate the control effect of different chemicals in the field. The corrected mortality rates of the larvae, pupae and adults of R. ferrugineus drenched with quinalphos · carbosulfan 16% EC 400 times were 94. 26% ,89.37% and 93.45% respectively 8 days after the treat- ment,97.77% ,92. 36% and 95.51% respectively 15 days after the treatment. In the hanging bag test with acetamiprid · monosultap 45 % eluviation powder at the dosage of 20 g per tree, the corrected mor- tality rates of the larvae,pupae and adults were 95.46% ,87.66% and 93.31% respectively 8 days af- ter the treatment,98.56% ,92. 41% and 95.73% respectively 15 days after the treatment,99. 62%, 94. 57% and 97.77% respectively 30 days after the treatment. It indicated that the two methods were practicable for the control of R. ferrugineus.