梨大食心虫是梨树主要害虫之一,发生普遍,为害严重。十几年来我们对其发生规律进行了观察研究,并在550亩园内进行了测报和防治试验,使虫果率降低到5％左右,亩产增加10～20％。一、发生规律及生活习性梨大食心虫俗称“吊死鬼”,以为害梨芽和果实为主,在莱阳市一年发生两代,以幼虫 Pear borer is one of the major pests of pear tree, which is common and devastating. In the past decade or so, we have observed and studied the law of its occurrence, and measured and controlled experiments in 550 mu of gardens, reducing the rate of insect fruit to about 5% and increasing the yield by 10 to 20% per mu. First, the occurrence of laws and habits Pear big heart worms commonly known as “hanging death ghost”, that harm pear buds and fruit-based, in Laiyang City, two generations a year to larvae