果树害虫防治（图说连载之二十五）李润临文晋普　图（接上期３０页）四十六，梨圆介壳虫梨圆介壳虫分布很广，在梨和苹果区普遍发生，我省南部为害较重。此虫寄主很广，果树中主要有梨、苹果、海棠、桃、李、杏、樱桃和枣等。若虫或雌成虫吸食枝条和果实的汁液，造成树势... Fruit tree pest control (Figure serial number twenty-five) Li Runlin text Jinpu Figure (connected to the page 30) forty-sixth, pear round scale insects pear round scale insects are widely distributed in pears and apple areas generally occur in the southern province of damage Heavier This insect host is very wide, fruit trees are mainly pear, apple, begonia, peach, plum, apricot, cherry and dates. Nymphs or female adults eat the juice of branches and fruits, causing the tree ...