三种生物药剂对核桃黑斑蚜的防治试验

Three Kinds of Biological Agents Control Efficacy on Chromaphis juglandicola Kaltenbach

以核桃树为试材,核桃黑斑蚜(Chromaphis juglandicola Kaltenbach)为防治对象,采用喷雾法,研究了3种生物药剂对核桃黑斑蚜防治效果,同时选择2种化学农药进行了比较试验。结果表明:20%吡虫啉可溶性液剂、30%乙酰甲胺磷乳油和44%毒死蜱乳油见效快,防治效果好;药后5d,除0.3%印楝素,4种药剂防效都达到了98%以上,无显著性差异。药后7d,0.3%印楝素防效为90.12%,0.5%苦参碱防效为98.91%,20%吡虫啉防效为99.37%,30%乙酰甲胺磷和44%毒死蜱防效都达到了100%。综合来说,0.5%苦参碱水剂和20%吡虫啉可溶性液剂防治效果好,且对核桃树安全,可以在生产实践中推广。

Taking walnut trees as materials,Chromaphis juglandicola Kaltenbach as control object,using spraying method,the control efficacy of 3 kinds of biological agents on Chromaphis juglandicola Kaltenbach was studied comparing with 2 kinds of chemical agents.The results showed that 20% imidacloprid SL,30% acephate EC and 44%chlorpyrifos EC had quick and good control effect.5 days after treatment,except 0.3% azadirachtin EC,the control effect of another 4 kinds of agents were more than 98%,there was no significant difference.7 days after treatment,the control effect of 0.3% azadirachtin EC was 90.12%,0.5% matrine EC was 98.91%,20% imidacloprid SL was 99.37%,30% acephate EC and 44% chlorpyrifos EC control efficiency reached 100%.In summary,0.5% matrine EC and 20% imidacloprid SL control effect were good and safe for the walnut trees,could be extended in the production practice.