一、选育经过七十年代初,当时在荆州、宜昌等地区推广的棉花良种“沙农6号”,虽有较多的优点,但铃小、子轻、后期长势弱,经多年种植,生产潜力不大。1971年沙洋农场农科所,开始进行杂交育种。围绕以提高“沙农6号”铃重为重点,当年选配了荆棉4号× First, the breeding After the early seventies, was in Jingzhou, Yichang and other areas to promote the cotton varieties “Shaonong 6”, although more advantages, but the bell small, light, the late growth is weak, after years of planting, Production potential is not big. Shayang Farm 1971 Agricultural Institute, began hybrid breeding. Around to improve the “Shaonong 6” bell weight as the focus, when the matching Jingmin 4 ×