矢尖蚧是柑桔生产上普遍发生的主要害虫。近几年有扩大蔓延趋势。针对这一问题，应采取措施，进行综合防治。一、发生规律矢尖蚧在江西一年发生三代；第一代若虫出现于５月中旬；第二代７月中旬；第三代９月中旬。以第一代幼蚧（若虫）发生整齐、集中、抗药力差为药剂防治... Agrimony is a common pest of citrus production. In recent years, there is an expansion trend. In response to this issue, measures should be taken to carry out comprehensive prevention and control. First, the occurrence of regular vector scale Kuwana occurred in Jiangxi three generations a year; first generation nymphs appeared in mid-May; the second generation in mid-July; the third generation in mid-September. To the first generation of melatonin (nymphs) occur neat, concentrated, poor drug resistance for the chemical control ...