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为筛选出防治扶桑绵粉蚧的理想药剂,在室内选用4种化学药剂和3种植物源药剂对扶桑绵粉蚧成虫进行了药剂处理试验。试验结果表明,7种药剂对扶桑绵粉蚧成虫的致死作用均与浓度成正比,即浓度越高杀虫效果越好,各药剂均对扶桑绵粉蚧均具有良好的触杀杀虫效果,且扶桑绵粉蚧成虫对7种供试药剂的敏感程度依次为:5%啶虫脒乳油>5.7%氟氯氢菊酯乳油>0.3%印楝素乳油>18%氧化乐果乳油>4%鱼藤酮乳油>1.3%苦参碱水剂>1.9%甲氨基阿维菌素·苯甲酸盐乳油;比较7种药剂触杀和内吸处理条件下发现,啶虫脒和印楝素的杀虫效果明显好于其他,3种植物源药剂的药效持续性明显好于化学药剂。啶虫脒、印楝素均可以作为防治扶桑绵粉蚧的备选药剂,其中印楝素可作为扶桑绵粉蚧绿色防治的首选药剂。
In order to screen out the ideal medicament for prevention and cure of Fusarium meleagridis, four kinds of chemical agents and three kinds of phytoalexins were selected indoors to treat the insecticides. The results showed that the lethal effects of 7 kinds of agents on the adults of Fusarium mealybugon were proportional to the concentration, that is, the higher the concentration, the better the insecticidal effect, and all the agents had good contact and insecticidal effects on the mealybugs The susceptibilities of the adults to the seven tested pesticides were as follows: 5% acetamiprid EC> 5.7% HCFC SM cream 0.3% azadirachtin EC 18% omethoate 4% rotenone EC> 1.3% matrine> 1.9% emamectin benzoate EC; compared with 7 pesticides, the insecticidal effect of acetamiprid and azadirachtin was obvious Better than the other, the efficacy of the three plant-derived agents is significantly better than that of the chemical agents. Acetamiprid and Azadirachtin can all be used as alternative medicine for the prevention and cure of mealybug mealybugs. Azadirachtin can be the first choice for prevention and cure of mealybugs.