一、我国抗源品种的由来1951年春,原四川农业实验所在全省棉花病害调查中发现棉花枯萎病危害。1952年由植保、育种、植棉能手组成以选育抗病品种为中心的防治研究工作组。采用单株选择、系统比较、人工诱发病圃鉴定的方法从重病区射洪县紫云乡的德字棉531品种中,选育出抗病品种52—128。尔后,又从射洪 First, the origin of China’s anti-source varieties In the spring of 1951, the original Sichuan Institute of Agricultural cotton disease in the province found in the survey of cotton wilt hazards. In 1952 by the plant protection, breeding, cotton planting experts to breeding resistant varieties as the center of prevention and control research group. The methods of single plant selection, systematic comparison and artificial induced nursery identification were used to select the resistant varieties 52-128 from Dezamian 531 varieties in Ziyun Township, Shehong County, Shehong County. Later, from shooting flood