河北平泉县南五十家子公社(原五星社)的苹果树,几年来受小吉丁虫为害,受害严重的阳坡面,被害率达80%以上。1958年他们采取了人工刮治与药剂除治相结合的方法,被害率减少到5%左右。防治的最有利时期,是秋治当年幼虫,在8—9月当代幼虫极小,初蛀食,入皮层不深,这时防治采取刮治和涂药。用小刀刮治,必须轻破 Hebei Pingquan south fifty sub-communes (formerly five-star clubs) of the apple tree, for several years by the small Jidian insects damage, severely sunshine on the sunny side, the victimization rate of 80%. In 1958, they adopted a combination of manual scraping and drug treatment, reducing the victimization rate to about 5%. The most favorable period of prevention and control is the year of autumn governance larvae, in the August-September contemporary larvae are extremely young, early eaten, into the cortex is not deep, then take cure and cure. Shave with a knife must be broken