柿绵介壳虫(又叫树虱子)在太行山区,柿树每年都有发生,严重影响树势和产量。它一年发生四代,以若虫在枝条缝隙、芽鳞等处过冬。翌年四月爬到嫩枝、芽上为害,展叶后移到叶背沿叶咏两侧为害。五月中、下旬交尾产卵。卵经12天左右孵化为若虫,迁到果上为害,4—5天后,分泌腊质绵状 Persimmon scale insects (also known as tree lice) in the Taihang Mountains, persimmon occur every year, seriously affecting the tree vigor and yield. It occurs four generations a year, with nymphs in the branches of cracks, bud scales, etc. winter. In April the following year climbed to shoots, shoots on the damage, after the leaves moved to leaf back on both sides of the wing damage. Mid-May, late mating spawn. Eggs hatch for about 12 days for nymphs, moved to the fruit damage, 4-5 days, the secretion of waxy waxy