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棉蚜是湖北棉区主要害虫之一。棉株被害後,不仅造成棉叶绉缩卷曲,抑制生长延迟成熟,而且增加脱落,影响产量,严重时,可酿成毁苗现象。为了保苗保产,必需掌握棉岈发生消长规律,找出控制棉蚜盛衰的主要因素,作好预测预报,以便适时开展治蚜工作。因此,我们於1954—1955年,在湖北荆州棉区进行系统的棉蚜发生规律观察,同时结合南部棉区关於应用0.5％666冶蚜效果问题进行研究,现将初步结果,报导如下: 一、棉发蚜生基本规律 1.棉蚜早春迁移和秋冬活动习性:据1954年调查,在杂草根部越冬的棉蚜(性雌),於3月中、
Cotton aphid is one of the major pests in Hubei cotton area. Cotton plants were killed, not only caused the crepe curl cotton, inhibit the growth delay of maturity, and increased loss, affecting the yield, serious, can lead to destroyed seedling phenomenon. In order to maintain seedling, we must grasp the growth and decline of cottonseed law, find out the main factors controlling the rise and fall of cotton aphid, making forecasts and forecasts, in order to timely start aphid management. Therefore, we systematically observed the occurrence of cotton aphids from 1954 to 1955 in Jingzhou, Hubei Province. At the same time, we studied the effect of the application of 0.5% 666 aphid in the southern cotton area. The preliminary results are reported as follows: The basic rules of cotton aphid life 1. Cotton aphid migration in early spring and autumn and winter activities: According to the 1954 survey, the weed in the winter aphids (sex), in March,