WEI Ming-feng,YAO Zhong,LIU Zhen,et al.Toxicity and Control Effect of Pesticides Against Cacopsylla chinensis[J].HEILONGJIANG AGRICULTURAL SCIENCES,2018,(11):48-51.[doi:10.11942j.issn1002-2767.2018.11.0048]
几种杀虫剂对中国梨喀木虱的毒力及其防治效果
- Title:
- Toxicity and Control Effect of Pesticides Against Cacopsylla chinensis
- Keywords:
- Cacopsylla chinensis; pesticides; toxicity; control effect
- 文献标志码:
- A
- 摘要:
- 为明确6种常用杀虫剂对中国梨喀木虱的杀虫活性， 分别在在室内和田间采用浸渍法、浸叶法和喷雾法测定了吡虫啉、阿维菌素、噻虫嗪、毒死蜱、高效氯氟氰菊酯和虫螨腈的毒力及防治效果。室内测定结果表明：供试药剂对若虫毒力高于成虫，1.8%阿维菌素毒力最高，10%高效氯氟氰菊酯最低；田间试验结果表明药剂的虫口减退率和防效均在药后7 d达到最高，其中25%噻虫嗪和30%虫螨腈防效最好，14 d时保持在70%以上，速效性和持效性表现良好，可推荐田间防治时应用。
- Abstract:
- Laboratory toxicity bioassay and field control effect to Cacopsylla chinensis were conducted to find out the sensitivity and effectiveness of six insecticides that were used commonly.Toxicities of these insecticides against 2nd-3rd instar nymphs and adults were determined with insect-dipping method and leaf-dipping method respectively,field control effects were determined using spray method on pear orchards.The results of laboratory toxicity experiments showed that these insecticides had higher toxicity on 2nd-3rd instar nymphs than adult.1.8% Abamectin had highest toxicity and 10% beta-cypermethrin had the lowest toxicity.Field trials suggested that these insecticides had the highest decrease rate and best control effect at 7 d after applying insecticides.The corrected control effects of 25% thiamethoxam and 30% chlorfenapyr were best,and above 70% at 14d after spraying.These results indicated that hiamethoxam and chlorfenapyr showed good available effect and lasting validity period to pear psylla.They were recommended to use in the field.
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备注/Memo
收稿日期：2018-07-23