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上位叶枝是指在棉株第1～2台果枝以上的节位腋芽分化形成的叶枝。上位叶枝的形成,消耗了棉株体内的有效养分,影响棉花早蕾、早桃,不利于棉花早熟高产。针对这一现象我站从1985～1990年对上位叶枝的形成原因进行了调查分析。一、形成原因 (一)生理因素现代科学实验证明,棉花叶腋内只有一个腋芽。腋芽在一定的条件下通过生理激发为活动芽,活动芽受棉花分带习性的遗传在果枝始节以下的叶枝带发育成为叶枝,在果枝始节以上的果枝带发育成果枝。但在特殊的条件下,在第1～2台果枝以上的节位
The upper leaf branch refers to the first branch in the cotton plant 1 to 2 above the node axillary bud differentiation branches. The formation of the upper leaves, the effective consumption of cotton plants in the body of nutrients, affecting cotton buds, early peaches, is not conducive to high yield of cotton precocious. In response to this phenomenon I stand from 1985 to 1990 on the formation of the upper branch of the cause of the investigation were analyzed. First, the formation of reasons (A) physiological factors Modern scientific experiments show that there is only one axillary bud axillary axillary. Under certain conditions, axillary buds are activated by physiological stimulation as buds of activity. Buds of activity buds are inherited by the habit of cotton zonation. Branches below the fruiting branch begin to develop into leaf branches. Fruit branches are developed above fruiting branches. However, under special conditions, the first ~ 2 sets of branches above the node