单甲脒是一种新型的有机氮杀螨剂,是防治螨类特别是抗性螨类的一种理想药剂,对蚧类、粉虱类亦有明显的防效,而且对天敌影响小,较好地克服了目前桔园常用的氧化乐果、三氯杀螨醇等对天敌杀伤大并使部分害虫产生抗性的缺点,具有广阔的应用前景。现将单甲脒防治湖南柑桔上四种主要害虫——柑桔红蜘蛛、糠片蚧、矢尖蚧及黑刺粉虱的药效试验及对柑桔害虫主要天敌的影响测定结果总结如下。 Monomethyl formamidine is a new type of organic acaricidal agent, which is an ideal medicament for controlling mites, especially resistant mites. It also has obvious control effects on scale species and whiteflies, and has little effect on natural enemies. Which overcomes the shortcomings that the omethoate, dicofol and other dicarboxylates which are commonly used in orange groves, kill large natural enemies and cause resistance to some pests, and has broad application prospects. The efficacy of monoamidine in the control of four major pests on citrus fruits in Hunan Province, such as citron spider mite, kelp scale, arrowhead scale and blackthorn whitefly, and their effects on the main natural enemies of citrus pests are summarized as follows .