在毛主席“农业学大寨”伟大号召的指引下,我们大队从一九六六年起,开展了岱字棉15号的提纯复壮工作,经过六年实践,逐步掌握了品种的特微特性、生长规律和提纯复壮的方法,取得了显著成果。棉花的衣分由一九六五年的34.6%,提高到3g.9%,最高的一九六八年达到40.2%,纤维长度 Under the guidance of Chairman Mao’s Great Call in Agriculture Dazhai, our brigade started the purification and rejuvenation work of Dai Zi Cotton No. 15 since 1966. After six years of practice, we gradually mastered the special features of the varieties , Growth and purification and rejuvenation methods, and achieved remarkable results. The percentage of cotton garments increased from 34.6% in 1965 to 3g.9%, the highest in 1968 to 40.2%. The fiber length