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棉叶斑病在我团已成为棉花持续增产的障碍。为了解决这一问题,我们用天津农药实验厂生产的50％可湿性退菌特粉剂分别作了小面积和大面积防治试验,取得了较好的防治效果。 由病原菌Alternaria tenuis引起的棉叶斑病,一般在棉株长势弱或开始早衰时发生,对棉铃重量影响很大。1982年8月16日,我们将可湿性退菌特粉剂与50％辛硫磷混用(每亩用退菌特粉剂70克),飞机喷药,每
Cotton leaf spot in my troupe has become an obstacle to continued cotton yield. In order to solve this problem, we made a small area and a large area prevention and control experiment with 50% wettable detreating powder produced by Tianjin Pesticide Experimental Plant, and achieved good control effect. Cotton leaf spot caused by the pathogen Alternaria tenuis usually occurs when the cotton plant grows weakly or begins premature aging, which has a great impact on boll weight. August 16, 1982, we will be wettable bean powder special powder and 50% phoxim mixed (with detoxification powder 70 grams per acre), aircraft spraying, each