球坚蚧发生与防治球坚蚧在我省普遍发生，主要为害苹果、桃、李等多种果树，以若虫乃雌成虫成群固着在枝条上，以口器刺入枝条表皮吸取养分，使树体生长衰弱，影响座果及产量，甚至使枝条干枯死亡。一、形态特征：雌成虫介壳长４－５ｍｍ，半球形，初期质软，后期渐硬化，... Occurrence and control of ball scale Kuwana ball common occurrence in our province, the main damage to apple, peach, plum and other fruit trees to nymphs female adults are fixed in groups of sticks to mouthparts pierce the branches of the skin to absorb nutrients Degradation of the tree body, affecting the fruit and yield, and even make the branches died. First, morphological characteristics: female adults shell length 4-5mm, hemispherical, early soft, late hardening, ...