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所谓粉尘法就是让农药的粉粒在大棚、温室内形成飘尘,并能在空间悬浮相当长的时间,以便在农作物上充分扩散沉积,从而达到防治病虫目的。此项新技术是中国农科院植保所“75—03—02—01”科技攻关研究成果。所施药剂是经特殊加工制成的具有一定细度的固体粉剂。它不同于过去大田的敌百虫粉、粘虫粉和六六六粉等普通粉剂,它是在保护地这个特殊的(封闭)
The so-called dust method is to let pesticide powder particles in the greenhouse, the formation of floating dust in the greenhouse, and suspended in space for a long time, in order to fully spread the deposition of crops, so as to achieve the purpose of pest control. This new technology is the Chinese Academy of Agricultural Sciences Institute of Plant Protection “75-03-02-01” research results of scientific and technological achievements. The applied agent is a specially processed solid powder with a certain degree of fineness. It is different from the past, trichlorfon powder in the field, armyworm powder and six six powder powder and other common powder, it is protected in this special (closed)