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农作物施叶面肥具有用量少、利用效率高、见效快等优点,是给作物补充营养防治作物缺素症的有效方法,目前已广泛应用于农业生产。1品种对路市售叶面肥品种有氮磷钾营养元素型、微量元素型、氨基酸型、腐质酸型、生长调节剂型等类型。需根据施肥目的确定叶面肥的种类和用量,且所选品种溶解度要好,杂质要少。2对症施肥根据作物的种类及其缺素症状,选择合作叶面肥。如为促进早期发育和后期增加千粒重,可喷施氮和磷；为增大叶面积促进营养体生长,可喷施磷和钾；为防治因缺素症而导致的生理病害可喷施微肥。
Crops with foliar fertilizer with less usage, high efficiency, quick and so on, is an effective method for crop nutrition supplementation to prevent crop disease, has been widely used in agricultural production. 1 varieties on the road available foliar fertilizer varieties of nitrogen, phosphorus and potassium nutrient elements, trace elements, amino acids, humic acid type, growth regulator type and other types. According to the purpose of fertilization to determine the type and amount of foliar fertilizer, and the selected species solubility is better, fewer impurities. 2 symptomatic fertilization according to the type of crop and its deficiency symptoms, choose to cooperate foliar fertilizer. In order to promote the early development and the late increase of 1000-grain weight, spraying nitrogen and phosphorus; in order to increase the leaf area and promote vegetative growth, phosphorus and potassium can be sprayed; for the prevention and treatment of physiological diseases caused by lack of disease can be sprayed with trace fertilizers .