梨小食心虫是果树食 心中最常见的一种,豫北山 区的大部分梨园,尤其桃梨 混栽园受害最为严重,梨的 虫果率高达70～80%,致使 果实腐烂而失去商品价值, 严重影响着我县果品的产量 和质量。为此,我们从1983年 　开始,对梨小食心虫在我县 的发生规律及防治进行了研 究,并进行了大面 Pear Moxibustion is the most common kind of food in fruit trees. Most pear orchards in mountainous areas of North Henan, especially Peach and Pear mixed plantations, suffer the most. Pear fruit rates are as high as 70-80%, causing the fruits to rot and lose their value. Seriously affect the yield and quality of fruit in our county. To this end, we started from 1983, Pear moth worms in our county’s occurrence and prevention were studied and carried out a large