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编辑同志:今年我们农场棉花长势喜人,但现在棉田中不少棉铃出现黑斑并开始腐烂。经调查我们分场的棉花发病率高达30%以上,这对棉花丰收是一个严重威胁。我们十分担忧,请贵刊能给以指教。一四三团部分农工一四三团部分农工:你们信中提到的病害很可能属于棉花铃病中的黑果病。在新疆棉区发生的铃病主要有炭疽病、黑果病和角斑病。它们发病的病状有所不同。炭疽病的发病症状为:病斑初为暗红色或褐色小点,逐渐扩大后呈绿褐色或
Editor’s Comrade: This year our farm cotton grows gratifyingly, but now many cotton bolls in cotton fields show dark spots and begin to decay. After investigation, the incidence of cotton in our sub-field is as high as over 30%, which is a serious threat to cotton harvest. We are very worried about your magazine. One to four groups Part of the agricultural workers One hundred and forty four Some of the peasant workers: The diseases mentioned in your letter are likely to belong to the blackberry disease in cotton bollworms. Bell cotton in Xinjiang cotton areas are mainly anthrax, black fruit and angular leaf spot disease. The symptoms of their disease are different. The onset of anthrax symptoms are: lesion initially dark red or brown dots, gradually expanded green brown or