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棉蚜是危害棉花生产的主要害虫之一,也是影响棉花产量和品质的主要因素之一。由于近年来棉花面积不断扩大,给棉蚜的越冬、种群繁殖创造了有利的环境条件。据长期观察,棉蚜生长发育的最适温度为16～22℃,相对湿度为75%以下。山西省洪洞县一般年份6月底-7月下旬,由于雨季到来出现这样的高温高湿条件,再加上棉田天敌的抑制作用,棉蚜一般不再猖獗为害。根据棉蚜的生活习性采取预测预报办法,定点、定人调查,以播种早、出苗长势好,历年棉蚜发生重的田块以及城镇居民附近的棉田先调查为主。结合当前的间苗、定苗,同时辅以药物治疗,及时采取措施。
Cotton aphid is one of the main pests that endanger cotton production and one of the main factors affecting the yield and quality of cotton. Due to the continuous expansion of cotton area in recent years, favorable environment conditions have been created for overwintering cotton aphid and population breeding. According to long-term observation, cotton aphid growth and development of the optimum temperature of 16 ~ 22 ℃, relative humidity below 75%. Hongdong County, Shanxi Province, the general year from the end of June to late July, due to the arrival of the rainy season such high temperature and humidity conditions, combined with the natural enemy cotton suppression, aphids are generally no longer rampant damage. According to the living habits of cotton aphid, we adopted the methods of forecasting and forecasting, fixed-point surveys and surveys to survey the population of cotton aphids and the cotton fields near urban residents. Combined with the current Simiao, Dingmiao, supplemented by drug treatment, take timely measures.