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蔬菜的生长期短,复种指数高,为了保证高产、优质,蔬菜根外施肥技术得到了广泛的应用。蔬菜根外施肥成本低,效益高,适用性广,氮、磷、钾肥和微肥均可用此方法施用。但必须根据蔬菜品种、生长时期、肥料种类和土壤肥力等情况合理喷施。 1.违择合理的肥料种类和喷施时期 白菜、甘蓝、青菜、菠菜、苋菜等叶类蔬菜,生长快,需氮肥多,根外施肥以尿素为主;生长中后期宣喷施磷酸二氢钾、氯化钙水溶液,特别是大白菜、甘蓝等结球叶类菜。果菜类(如瓜类、茄果类)和豆类菜,其食用部分都是生殖器
Vegetable growth period is short, multiple crop index is high, in order to ensure high yield, high quality, root vegetables fertilization technology has been widely used. Root vegetables with low cost of fertilization, high efficiency, wide applicability, nitrogen, phosphorus, potash and fertilizer can be applied this method. However, it must be properly sprayed according to the varieties of vegetables, growth period, types of fertilizers and soil fertility. 1. Illegally choose the type of fertilizer and spraying time cabbage, cabbage, cabbage, spinach, amaranth and other leafy vegetables, grow fast, more nitrogen fertilizer, fertilizer application to the main urea; Potassium, calcium chloride solution, especially cabbage, cabbage and other knotty leaves vegetables. Fruits and vegetables (such as melons, solanaceous) and legumes, the edible part of their genitals