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棉蚜是棉花生长前、中期的主要害虫,繁殖蔓延迅速.如何应用简单、经济、有效的办法防治,是一个重要的课题.1981年我们在郑州郊区沟赵公社赵村大队的2000多亩棉田,利用氧化乐果、久效磷涂茎法对前、中期棉蚜进行了防治试验示范,取得较好的效果.一、方法:药液配制:50%氧化乐果(或50%久效磷)乳剂1斤:聚乙烯醇0.1斤:水5-10斤.先用少量热水将聚乙烯醇溶化,然后加足水量(最好仍加热水,使聚乙烯醇充分溶
Cotton aphid is the main pest before and during the cotton growth, the spread of rapid spread .How to apply simple, economical and effective measures to prevent and control is an important issue .In 1981, we Zhaogongcha Zhao Village brigade in the suburbs of 2000 acres of cotton fields , The use of omethoate, monocrotophos smear on the first and the mid-term cotton aphid prevention and control experiment demonstration and achieved good results. First, the method: liquid preparation: 50% omethoate (or 50% monocrotophos ) Emulsion 1 kg: 0.1 kg of polyvinyl alcohol: water 5-10 kg. First with a small amount of hot water to dissolve the polyvinyl alcohol, and then add enough water (preferably still heated to make polyvinyl alcohol fully soluble