烯啶蟲胺和噻嗪酮復配防治灰飛虱的增效作用

呂敏 陸玉榮 蘇建坤

摘要[目的]明確烯啶蟲胺和噻嗪酮復配的增效作用。[方法]通過室內和田間藥效試驗研究了烯啶蟲胺和噻嗪酮復配對灰飛虱的防治效果，并進行了2016年揚州地區灰飛虱對烯啶蟲胺和噻嗪酮的抗藥性監測。[結果]揚州地區灰飛虱對噻嗪酮處于高水平抗性，對烯啶蟲胺處于敏感水平。烯啶蟲胺與噻嗪酮的3個配比（1∶9，2∶8，3∶7）都有增效作用，烯啶蟲胺與噻嗪酮的復配比為3∶7時共毒系數最大，達210.20。田間藥效試驗表明，復配劑30%烯啶蟲胺·噻嗪酮可濕性粉劑在藥后1～14 d對灰飛虱的防效都高于對照單劑30%烯啶蟲胺和30%噻嗪酮可濕性粉劑，且在藥后7、14 d的防效顯著高于對照單劑。[結論]該復配劑可作為推薦藥劑用于田間防治灰飛虱。

關鍵詞灰飛虱；烯啶蟲胺；噻嗪酮

中圖分類號S435.112文獻標識碼A文章編號0517-6611（2017）10-0155-02

Study on Synergism of Nitenpyram and Buprofezin to Laodelphax striatellus

LV Min， LU Yurong， SU Jiankun*

（Institute of Agricultural Sciences of Lixiahe District of Jiangsu Province， Yangzhou， Jiangsu 225007）

Abstract[Objective] In order to clarify the synergism of nitenpyram and buprofezin to Laodelphax striatellus. [Method] We studied the mixture of nitenpyram and buprofezin by indoor and field efficacy. The resistance monitoring of Laodelphax striatellus to nitenpyram and buprofezin in Yangzhou was also carried out. [Result] The resistant level of Laodelphax striatellus to buprofezin was high， and the resistance of Laodelphax striatellus to nitenpyram was at sensitive level. The mixtures of nitenpyram and buprofezin （1∶9， 2∶8， 3∶7，mass ratio） were all synergic. The highest cotoxicity coefficient was 210.20 when the mixture ratio of nitenpyram and buprofezin was 3∶7. Field efficacy test results showed that the control effect of 30% the mixture of nitenpyram and buprofezin WP on Laodelphax striatellus in 1-14 days after administration were higher than that of single agent 30% nitenpyram and 30% buprofezin. And the 7 days and 14 days effect was significantly higher than that of the control single ones. [Conclusion] So 30% the mixture of nitenpyram and buprofezin WP can be used as the recommended agent for field control to Laodelphax striatellus.

Key wordsLaodelphax striatellus；Nitenpyram；Buprofezin

灰飛虱[Laodelphax striatellus（Fallén）]屬半翅目飛虱科，中國各省區均有發生，以長江中下游和華北地區發生最嚴重[1-2]。灰飛虱是水稻重要的害蟲之一，不僅刺吸取食為害水稻、小麥、玉米及高粱等作物，更重要的是傳播水稻條紋葉枯病、水稻黑條矮縮病、小麥叢矮病及玉米粗縮病等病毒病害[3-4]，傳毒造成的危害遠大于直接刺吸危害[4]。一直以來，灰飛虱的防治以化學農藥為主，從小麥到水稻，防治次數多，農藥使用單一，加大了農藥的選擇壓力，進而導致了灰飛虱對多種藥劑產生了不同程度的抗藥性，可以長期用于防治灰飛虱的高效藥劑越來越少。

害蟲抗藥性已成為日益緊迫的世界性問題，因此制定合理的抗藥性治理策略是害蟲綜合治理的重要組成部分。……