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防治梨木虱有了理想制剂梨木虱是世界性害虫，它主要危害叶片，在我国各梨区均有发生，危害期长，防治困难，已成为近年来梨树主要虫害之一。由于梨木虱分泌粘液，使一般农药不好穿透，许多农药防治效果不理想，梨农急盼新型特效农药。１９９４年北京华戎生物激素厂独家开...
Pear lice prevention and control with the ideal preparation pear psylla is a worldwide pest, which is the main hazard leaves, pear regions in our country have occurred, long-term harm, prevention and control difficulties, has become one of the major pests in recent years pear. Due to the secretion of mucilaginous pear lice, the general poor penetration of pesticides, many pesticide control effect is not ideal, pears farmers looking forward to a new type of pesticides. 1994 Beijing Huarong bio-hormone factory exclusive open ...