全国植棉劳模吴春安十多年前就注意到棉花黄萎病的蔓延加重,与病棉落地的残枝败叶有直接关系,经过多年的观察和实践,1959年他明确提出:“病菌不单地里有、病棵的杆里、叶里都有”,从此年年带动全大队的社员清除病田棉叶,收到了良 Wu Chun-an, a national model laborer of cotton-planting, noticed more than ten years ago that the spread of cotton verticillium wilt was aggravating. It has a direct relationship with the diseased branches and leaves of diseased cotton. After years of observation and practice, he explicitly stated in 1959: There, the disease in the pole, the leaves have ", from this year to bring along members of the brigade to remove sick cotton leaves, received a good