陕西榆林是杏原产地之一,现有“两杏”90万亩,其中山杏75万亩,大扁杏15万亩,榆阳、府谷、神木、绥德、靖边等县均有大面积分布。榆阳区大力发展杏产业,现已形成百公里杏产业带,年产杏肉500万公斤,产值近1500万元。近年来,随着栽植面积大幅度增加,农药广泛使用,病虫害防治出现了一些新的特点。榆林“两杏”基地主要病虫害发生特点及防治方法:1.桃小食心虫。桃小食心虫主要危害杏果,一年发生2代,以老熟幼虫在树干附近土中吐丝缀合土粒织成扁圆形茧越冬。越冬幼虫一般5月上旬破茧出土,出土后在地面做夏茧化蛹,蛹 Shaanxi Yulin is one of the origin of apricot, the existing “two apricot ” 900000 acres, of which 750000 acres of apricot, apricot 15 acres, Yuyang, Fugu, Shenmu, Suide, Jingbian County Have a large area distribution. Yuyang vigorously develop the apricot industry, apricot industry belt has now formed a hundred kilometers, with an annual output of 5 million kilograms of apricot, the output value of nearly 15 million yuan. In recent years, with the sharp increase of planting area, pesticides are widely used, and some new features have emerged in pest and disease control. Yulin “two apricot ” the main pest and disease occurrence and control methods: 1 peach small worm. Peach small bore worms main hazard apricot fruit, occurred two generations a year to mature larvae in the soil near the trunk silt spun into a flat round cocoon wintering. Overwintering larvae are generally unearthed in early May cocoon unearthed in the ground to do summer cocoon pupation, pupae