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棉花苗期病害最常见的有立枯病、炭疽病、枯萎、黄萎病;苗期害虫主要有地老虎、金针虫、棉蚜、红蜘蛛、棉盲蝽。棉花苗期病虫害是造成棉花死苗和缺苗断垄的主要原因,也影响到棉花的一播全苗、苗齐、苗匀、苗壮,因此必须要搞好棉花苗期病虫害的防治。一、棉花苗病识别方法与防治措施1、立枯病也叫黑根或者烂根。棉苗受害幼茎基部出现淡黄色后变黑褐色缢缩环抱全茎,严重时致枯死。病苗根部呈锥形,无须根。发病条件:低温、高湿易发病,特别是连续降
Cotton seedling diseases are the most common blight, anthracnose, wilt, Verticillium wilt; seedling pests mainly to the tiger, pinworm, cotton aphid, spider mite, cotton bug. Cotton seedling disease and insect pest is caused by dead and lack of seedlings of cotton breaking the main reason for the ridge, but also affect the cotton seedling broadcast, seedling Qi, Miao Miao, Miao Zhuang, it must do a good job cotton seedling pest control. First, cotton seedling disease identification methods and prevention and control measures 1, Blight also called black root or rotten roots. Cotton seedling young stem base appears yellowish brown after darkening shrinking around the entire stem, caused by severe death. Seedling root cone, no root. Conditions: low temperature, high humidity prone to disease, especially continuous drop