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梨木虱是梨树上的重要病害之一。近年来在我国各梨区大量发生,猖撅为害,严重地影响着梨树的正常生长和结果。1990～1991年,我们用2.5%的功夫乳油对梨木虱进行药剂防治试验,防治效果较好。功夫又称PP321,是一种新的拟除虫醚类农药,具有触杀、胃毒和驱避作用。防治梨木虱主要有以下优点: 1.用药量小,防效好
Pear lice is one of the most important diseases on pear trees. In recent years, a large number of pear areas in our country, rampant damage, seriously affecting the normal growth of pear and the results. From 1990 to 1991, we used 2.5% Kung Fu EC to test the chemical control of pear psylla, and the control effect was better. Kung Fu, also known as PP321, is a new pesticide intended to be pest control, with contact kill, stomach poisoning and repellent effect. Pear lice prevention and control have the following major advantages: 1. Small amount of medication, good control effect