我国棉花的发展,在稳定面积的前提下,推广高产、优质、抗病品种,并探索其良种繁育体系,以保持品种的优良种性,对稳定提高单产和品质,无疑具有决定性的作用。中国农科院棉花研究所同德州地区行署、平原县政府两年的协作和实践,充分证明了这一点。一、历史的抉择(一)建立棉种良繁体系势在必行近十多年来,德州地区棉花生产所以起伏较大,除了政策性因 Under the precondition of stable area, the development of cotton in our country promotes the high-yielding, high-quality and disease-resistant varieties and explores the breeding and breeding system to maintain the excellent variety of varieties and undoubtedly plays a decisive role in steadily improving yield and quality. Two years of collaboration and practice between the Cotton Research Institute of the Chinese Academy of Agricultural Sciences and the Texas Regional Office and the Pingyuan County Government have fully proved this point. I. Historical Choice (I) It is imperative to establish a good and complicated cotton plant system In the past decade or so, the cotton production in the Texas area has been quite volatile. Apart from the policy reasons