6种植物源农药防治波纹杂毛虫林间药效分析

为明确6种植物源农药防治波纹杂毛虫的最佳林间配比度和用药量,掌握低空施药技术,在福建省沙县马尾松林建立试验区,开展林间喷雾和喷烟防治试验。结果表明:6种农药的林间喷雾,药后4 d,防治效果均超过90%;最佳林间配比度为:1.3%苦参碱可溶液剂和1.2%烟碱·苦参碱乳油均为1300倍液;1%苦参·藜芦碱可溶液、4%鱼藤酮乳油和0.6%印楝素乳油均为1000倍液,0.5%藜芦碱可溶液为800倍液。2种农药喷烟后3 d,防治效果均超过90%,1.3%苦参碱可溶液和1.2%烟碱·苦参碱乳油与烟雾剂最佳配比度均为1∶9。参试的6种植物源农药可广泛应用于防治波纹杂毛虫幼虫。

Control Effect of Six Plant-derived Pesticides on Larvae of Kunugia undans

In order to find out the optimum ratio and dosage of plant-pesticides for controlling Kunugia undans,and to master the low-altitude application techniques,the experiment of spraying and smoking control was carried out in Pinus massoniana forest in Shaxian County,Fujian Province.The results showed that the forest spray of 6 pesticides,4 d after the drug,the control effect is more than 90%;the best interforest ratio is:1.3%matrine solution and 1.2%nicotine-matrine emulsion are 1300 times;1%bitter ginseng,quinoline solution,4%rotenone cream and 0.6%neem cream are all 1000 times,and 0.5%quinoline solution is 800 times.The control effect of the two pesticides was more than 90%3 d after smoking,the optimum ratio of 1.3%matrine solution and 1.2%nicotine matrine emulsifiable concentrate to aerosol was 1∶9.The six plant-pesticides could be widely used to control the larvae of C.undamans.