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冬春季蔬菜,经常遇到低温寒流、霜雪冻等恶劣天气的侵袭,往往导致较大经济损失。以下介绍15种防寒方法。1.控氮法:苗期适当减少氮肥用量,切不可偏施氮肥,以免植株抗寒力差。追肥要早,促使菜苗健壮。低温之前,不能施用速效氮肥,宜追施1次磷钾肥,以增强抗寒力。2.施有机肥法:用猪
Winter and spring vegetables, often encountered cold frost, frost and snow and other inclement weather attacks, often lead to greater economic losses. The following 15 kinds of cold method. 1. Nitrogen control: seedling appropriate to reduce the amount of nitrogen, must not partial nitrogen fertilizer, so as to avoid poor cold hardiness. Top dressing to be early, prompting Caijiao robust. Cryogenic, can not be applied quick-acting nitrogen fertilizer, should be topdressing 1 phosphorus potash, in order to enhance the cold hardiness. 2. Application of organic fertilizer method: with pigs