摘要
本文以田间试验数据全面反映不同时间施用甲胺磷＋溴氰菊酯对褐飞虱及其捕食性天敌蜘蛛、黑肩绿盲蝽等种群动态的影响。结果表明施药后褐飞虱种群数量均有不同程度下降，但对褐飞虱主害代的控制作用与使用时间有密切关系，且随种群的发展而下降。施药区褐飞虱种群增长倍数较对照区显著提高，引起褐飞虱种群增长倍数提高的主要时期在四代成若虫高峰期至五代卵高峰期，即施药后２～３周内。其主要原因是甲胺磷＋溴氰菊酯对捕食性天敌尤其是对黑肩绿盲蝽的杀伤作用。因此建议限制甚至禁止在水稻田单独或混合使用这两种农药。
According to the field test, the paper reported the effects of application of Methamidophos + Deltamethrin in different time on population dynamic of the brown planthopper and its predatory (spiders, Cyrtorrhinus lividipennis Reuter et al ). The study showed that the population of the brown planthopper was decline, but the control effect to the main harmful generation was connected closely with application time. And the control effect was decline when the population of brown planthopper increased. In application field the increase rate of population was higher than that of none application field. The main period of population increase was during the adult and larva population peak of the forth generation and the egg population peak of the fifth generation, i.e. 2～3 weeks after application. The main reason was the application of Methamidophos + Deltamethrin killed the Cyrtorrhinus lividipennis Reuter and other predators. The paper suggested that the application of one or two pesticides mentioned above should be limited or forbidden in rice field.
出处
《植保技术与推广》
1998年第4期28-31,共4页
Plant Protection Technology and Extension
关键词
甲胺磷
溴氰菊酯
褐飞虱
蜘蛛
黑肩绿盲蝽
methamidophos deltamethrin brown planthopper spiders Cyrtorrhinus lividipennis Reuter
