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通过三年观察,在郑州高水肥条件下,一般冬小麦的分蘖均有一定的级位.以郑州761小麦为例,9万基本苗,适期播种(10月5日)的主茎生一级分蘖,11月底可从第5叶腋出生第5蘖(即5N),少数植株可达第6蘖(即6N).从一级分蘖上出生的二级分蘖,绝大多数植株11月底可达3N蘖处,出生3N-1、3N-2蘖,少数植株达到4N蘖处出4N-1蘖,12月可生5N-1蘖.二级蘖上出生的三级蘖,多数植株11月底可以分生到2N-1蘖处出生2N-1-1蘖.四级蘖出的较少,仅少量植
Through three years of observation, under the conditions of high water and fertilizer in Zhengzhou, winter wheat tillers generally have a certain level.With Zhengzhou 761 wheat, for example, 90,000 basic seedlings, suitable for sowing (October 5) At the end of November, the fifth tiller (ie, 5N) can be produced from the fifth leaf axil, and a few plants up to the sixth tiller (ie, 6N) .Two tillers born from the first tiller, most of the plants up to 3N by the end of November At the tillering stage, 3N-1, 3N-2 tillers were born, 4N-1 tillers at 4N tillers were found in a few plants, and 5N-1 tillers at December tillers. 2N-1 tillers were born to the 2N-1 tillers at the fourth grade less tillering, only a small amount of planting