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一、抑制秋季旺长,促使正常落叶 石榴树能否正常落叶,关系到树体能否安全越冬。据调查,正常进入落叶期的成龄树冻害指数为15.11％,而落叶晚的幼树冻害指数为64％。为使石榴树正常落叶,在石榴树的水肥管理上,前期应以氮肥为主,配以磷钾肥,同时注意满足开花、坐果、枝条生长对水分的需求;后期应以磷钾肥为主,配以氮肥,并适当减少浇水次数,以利提高果实品质,提高越冬抗寒能力。对于已到中秋季节仍旺盛生长的幼龄树,可用40％的乙
First, the suppression of the long prosperous autumn, to promote normal deciduous pomegranate trees can be deciduous, relates to the tree can be safe and wintering. According to the survey, the freezing damage index of adult trees aged 15.1% at normal stage of deciduous leaves, while that of young trees at late deciduous leaves is 64%. In order to make the pomegranate tree deciduous, the fertilizer and fertilizer management of pomegranate tree should be based on nitrogenous fertilizer with phosphorus and potassium fertilizer, and at the same time pay attention to the water demand for flowering, fruit setting and shoot growth; With nitrogen fertilizer, and appropriate to reduce the number of watering, to facilitate the improvement of fruit quality, improve winter cold ability. For young trees that have been well-to-mid-season in the Mid-Autumn, 40% of B is available