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合理选用叶面肥料,对增进蔬菜品质,提高蔬菜产量,有着积极的意义。 1.叶菜类蔬菜,如白菜、菠菜等,它们在各生育阶段都需氮较多,叶面施肥以碳铵、尿素、硫铵为主,喷施浓度一般碳铵为10％,尿素2％,硫铵1％,每次亩喷水50～60公斤,每季可喷施1～4次。
Rational use of foliar fertilizer, to improve vegetable quality, increase vegetable production, has a positive meaning. 1. Leafy vegetables, such as cabbage, spinach, etc., they need more nitrogen in all stages of growth, foliar fertilization to ammonium bicarbonate, urea, ammonium sulfate-based, spraying the general concentration of ammonium bicarbonate 10%, urea 2 %, Ammonium sulfate 1%, spray 50-60 kg per acre, spray 1 to 4 times per season.