姜屯公社杨屯大队,植棉历史较久,过去由于连年种植,不注意轮作倒茬,致使棉花黄萎病逐年加重,产量不断下降。这个大队在“农业学大寨”的群众运动中,认真落实农业“八字宪法”,经过反复实践,终于找到了以轮作为中心的综合措施防治棉花黄萎病办法。棉花黄萎病逐年减轻,由1961年发病率23％到1965年减少为7.3％,至1973年又压低到0.42％。棉花产 The Yangtun Brigade of Jiangtun commune has a long history of cotton-growing. In the past, due to successive planting, it was not paid attention to crop rotation. As a result, the incidence of cotton verticillium wilt increased year by year with the output declining continuously. In the mass movement “Learning from Dazhai in Agriculture”, the brigade conscientiously implemented the “eight-character constitution” of agriculture. After repeated practice, it finally found a comprehensive approach to preventing and treating cotton verticillium wilt with rounds as its center. Verticillium wilt decreased year by year, from 23% in 1961 to 7.3% in 1965 and down to 0.42% again in 1973. Cotton production