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棉花中期稳长是棉花早熟、高产、优质的一个重要标志。尤其近年来,采用高密度栽培,将密度提高到六千到八千株,甚至万株以后,棉花苗期就存在着株间争光的矛盾。中期稳长就显著得更加重要。如用肥不当,则棉株枝叶茂盛,阴蔽大,封行早,营养和生殖两个生长失去平衡,使现蕾推迟,现蕾节位升高,甚至使早现的蕾脱落,给高产、早熟带来极大不利,成为高密度栽培成败的关键。为此,我们三结合科研小组1973年着重在施肥与中期稳长的关系及中期控疯长的有效措施两个方面进行了初步的研究。
Mid-term cotton is cotton precocity, high yield, high quality an important symbol. Especially in recent years, the use of high-density cultivation, the density increased to 6,000 to 8,000, or even 10,000 after the cotton seedling there is a dispute between the glory. Mid-term stability is significantly more important. If improper use of fertilizer, the cotton plant lush foliage, shade large, seal line early, nutrition and reproduction of the two growth is out of balance, so that budding postponed, budding section increased, or even early buds off to high yield , Precocious bring great disadvantage, the key to the success of high-density cultivation. To this end, our three combined research team in 1973 focused on the relationship between fertilizer and medium-term stability and effective measures to control the soaring mid-term two aspects of a preliminary study.