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一、关农一号良种繁育的进行经过:本省主要棉种关农一号自1933年推广以来已有20年年历史,由于没有建立良种繁育制度,加上栽培管理差,已经表现出纤维变短衣分变低,株型、铃型变杂,生活力衰退和产量降低等退化现象。但因一时尚无新种可供更换,故自1953年开始进行良种繁育(简称复壮),以提高关农一号棉种的生活力、生产力及逐步改善其品质。
First, Guannong No. 1 seed breeding goes through: The province’s main cotton seed Guannong 1 since its promotion in 1933 has 20 years of history, because there is no established breeding system, coupled with poor cultivation and management, has shown that fiber changes Short clothing points become lower, plant type, bell-shaped hybrid, vitality decline and yield degradation and other degradation. However, since there is no new species available for replacement, it has been carrying out thoroughbred breeding (referred to as rejuvenation) since 1953 in order to improve the viability and productivity of the cotton seed of Guannong No.1 and to gradually improve its quality.