李小食心虫在赤峰市敖汉旗一年发生二代,第一代幼虫在6月下旬发生,主要危害幼果。幼虫钻入果实后蛀食果仁,并咬断叶柄附近的输导系统,使幼果变紫红色脱落。第二代幼虫发生在7月下旬至8月上旬,幼虫钻蛀果实后,不能危害果仁(此时果核已坚硬),只能蛀食果肉,把粪便留在果实内而使果实带“馅”,受害果不脱落,一般比健果早熟。李小食心虫除危害李子外,还危害杏、樱桃。 Li Xiaogong worms in Aohanqi, Chifeng City, a second generation occurs a year, the first generation larvae occurred in late June, the main harm to young fruit. Drilling larvae into the fruit after eating nuts, and biting off the guide system near the petiole, the young fruit becomes purple off. The second generation larvae occur from late July to early August. After the larvae have drilled the fruit, they can not endanger the kernel (at this time the kernel of the fruit has hardened) and can only eat the pulp and leave the excrement in the fruit to make the fruit “ Stuffing ”, the victim does not fall off fruit, fruit generally more than fructification. In addition to harmful insects plums, but also harmful to apricot, cherry.