摘要
本文研究了新型杀螨剂丁氟螨酯对叶螨天敌智利小植绥螨的毒性、对智利小植绥螨繁殖的影响以及两者联合应用对草莓二斑叶螨的防治效果。结果表明,丁氟螨酯对智利小植绥螨的毒性很低,即使在400 mg/L的高浓度下,智利小植绥螨的死亡率仍然低于35%,对雌、雄成螨的LC50分别为669.4 mg/L和456.4 mg/L。施用丁氟螨酯后,丁氟螨酯对智利小植绥螨成螨存活率影响无显著差异。田间试验表明单独使用智利小植绥螨和联合使用智利小植绥螨与丁氟螨酯,两周内对草莓二斑叶螨的防治效果都在90%以上,明显好于单独使用丁氟螨酯。相比于单独使用智利小植绥螨的生物防治区,联合防治区的防治效果更好,28 d时仍高于95%。因此,智利小植绥螨与丁氟螨酯联合应用防治草莓叶螨效果更佳。
In the present study, we investigated the toxicity of cyflumetofen, a new type of miticide, on Phytoseiulus persimilis, an important natural enemy of spider mites, the impact of cyflumetofen on reproduction of P. persimilis, and the potential of integrating the miticide and the predator in strawberry spider mite control. Our results showed that cyflumetofen is low toxic to P. persimilis, with35% mortality observed at the highest tested concentration（400 mg/L） and LC50 to female and male adults of 669.4 mg/L and 456.4 g/L, respectively. No significant impact of cyflumetofen on 7-day fecundity of P. persimilis was observed. In the field experiment, control efficiency of spider mites maintained at ≥90% for two weeks in the treatments with P. persimilis release alone or integrated application of the predators and the miticide. Integrated application showed higher potential than use the miticide alone, with 95% control efficiency at 28 days after application. Integrated application of the predator and the miticide can be recommended for spider mite management in greenhouse strawberries.
作者
乔岩
张正伟
张涛
庞博
郑书恒
祝保英
王步云
王恩东
吕佳乐
QIAO Yan;ZHANG Zhenwei;ZHANG Tao;PANG Bo;ZHENG Shuheng;ZHU Baoying;WANG Buyun;WANG Endong;LU Jiale(Beijing Plant Protection Station,Beijing 100029,China;Beijing Chang-ping District Xiaotangshan Modem Agricultural Science and Technology Demonstration Park Management Center,Beijing 102211,China;Beijing Agricultural Environment Monitoring Station,Beijing 100029,China;Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China)
出处
《中国生物防治学报》
CSCD
北大核心
2018年第4期514-519,共6页
Chinese Journal of Biological Control
基金
2017年草莓主要害虫非化学防治关键技术集成(20170111)
重要入侵生物快速识别关键新技术与生物防治新产品(2016YFC1201201)
关键词
智利小植绥螨
丁氟螨酯
二斑叶螨
草莓
Phytoseiulus persimilis
cyflumetofenin
Tetranychus urticae
strawberry
