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蚕豆属无限生长类型,在开花结荚时,往往下部豆荚已逐渐充实,上部仍在生长茎叶、现蕾开花,顶部的花往往不能结荚不饱满,反而消耗养分造成下部落花落荚增多,影响后期荚果充实延长成熟。因此,在蚕豆盛花后期及时进行摘心打顶,可控制生长,提高抗倒伏能力,减少养分消耗,使顶部茎叶养分转向下部的花荚吸收,养分能集中供给结荚的需要,提高结荚率和子粒饱满度增加粒重,有利于通风透光,促进早熟,达到增产增收的目的。打顶一般在植株第10-12层花序出现时及时摘心打顶。打顶时要求摘心不摘叶,摘去一心一叶,摘心在晴天露水干后进行。
Vicia is an infinite growth type, the flowering pods, the lower part of the pods have been gradually enriched, the upper part is still growing stems and leaves, budding flowering, the top of the flowers can not often pod is not full, but consume nutrients cause the lower part of the falling pods increased , Affecting the late pod full maturity. Therefore, in the late blooming flower broad bean topping in time, can control growth, improve lodging resistance, reduce nutrient consumption, so that the top of stems and leaves to the lower part of the flower pod absorption, nutrients can be concentrated supply pod needs to improve the rate of pod And grain fullness increase grain weight, is conducive to ventilation and light, promote premature, to achieve the purpose of increasing production and income. Topping plants in the first 10-12 layers appear in time topping topping. Topping requires not to pick off the leaves, pick one heart and one leaf, topping in dry dew on sunny days.