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桃小食心虫又名桃蛀果蛾,简称“桃小”。桃小在川西一带前期(4—5月)以为害桃果为主,后期(5月中、下旬之后)根据果树栽植情况,以害苹果、枣、梨芽为主。桃小在成都地区以及越西、茂汶等果区,每年发生一代,少数能繁殖两代。桃小的幼虫老熟后脱果入土,做扁形的茧越冬。在成都,第二年4月上旬,即旬平均气温达17℃,土温达19℃时,越冬幼虫便破茧出土,但数量较少,如此时遇降雨,
Peach small heart worms, also known as peach moth, referred to as “small peach.” Peach small in the western Sichuan belt early (April-May) to pests dominated the late (mid-May, late) according to the situation of fruit trees, to harm the apple, jujube, pear-based. Peach small in Chengdu, as well as the more West, Maowen and other fruit areas, a generation a year, a few can breed two generations. Peach small larvae off the fruit into the soil after the old, so flat cocoon wintering. In Chengdu, in early April of the following year, when the average temperature reached 17 ° C and the soil temperature reached 19 ° C, the overwintering larvae were found unearthed but in relatively small numbers,