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近几年来,棉花育苗移栽已在生产上大面积推广,并收到了显著的增产效果。当前存在的突出问题是,移栽后缓苗时间长,影响了育苗移栽“早生早发,稳长多结桃。延长有效生育期”。为了探讨缩短缓苗期的途径,去年我们作了六床试验,得到一些启示。移栽棉花产生缓苗期,根本原因是移栽时断伤了根系,破坏了根的吸收活动,进而使上部光合作用也受到抑制,因此棉苗暂时停止生长。移栽后,在适宜的外界条件下,棉苗很快发生新根。它一旦有了新根,
In recent years, cotton seedling transplanting has been widely promoted in production, and received a significant increase in yield. The current outstanding problem is that, after transplanting Huanmiao a long time, affecting the transplanting seedling “early morning and early hair, more stable and more fruiting. To extend the effective growth period.” In order to explore ways to shorten the seedling stage, last year we made six bed experiments and got some enlightenment. Transplantation of cotton produce Huanmiaoban, the fundamental reason is transplanted broken roots, damaged the absorption of root activity, thereby enabling the upper part of photosynthesis is also inhibited, so cotton seedlings temporarily stop growing. After transplanting, in the appropriate external conditions, cotton seedlings quickly occur new roots. Once it has a new root,