中黑盲蝽在1982年以前只有零星发生,为偶发性害虫。但近年来,中黑盲蝽的发生和危害程度日趋加重,上升为棉花主要害虫的优势种,减产损失一般的30—40%,严重的70—80%。三年来笔者进行了一些调查观察,现整理如下。一、生活史及习性中黑盲蝽在本地一年发生四代,从第二代开始有明显世代重叠现象。它以卵在植物的茎杆、叶柄或表土处越冬,过冬卵于翌年4月中旬开始孵化,4月下旬为第一代卵孵化高峰,初孵幼虫在附近绿肥、蚕豆、杂草、麦子,留兰香等上繁殖虫源,5月中旬为一代若虫高峰,6月上旬为一代成虫高峰,这时早春寄主逐渐枯老,大量迁入棉田繁殖为害。6月中旬为 The black bugs in 1982 before only sporadic occurrence, as occasional pests. However, in recent years, the occurrence and harm degree of Apodemus agkistrodon have been aggravating day by day, rising to the predominant species of major cotton pests, with the loss of 30-40% and the serious 70-80% of them. Three years the author conducted some investigations and observations, are now organized as follows. First, the life history and habits of black bugs occurred in the local four generations a year, from the second generation began to have a clear phenomenon of overlapping generations. It is overwintering in the stalks, petioles or topsoils of the plants. The overwintering eggs begin to hatch in mid April of the following year, and the first generation of egg hatching peak in late April. The newly hatched larvae nearby green manure, broad bean, weeds, wheat, Spearmint and other breeding insect source, the mid-May generation nymphs peak in early June for the generation of adults peak, then the host gradually dry early spring, a large number of immigrants to cotton fields to harm. Mid-June for