叶面施肥的主要作用是弥补土壤施肥不足,防止植株早衰,促进作物营养平衡等。正确使用叶面肥,可以增加作物产量、改善作物品质和增强作物抗逆性。为提高叶面肥的使用效果,应注意以下几点:一、肥料质量。在选择购买叶面肥时,要注意质量,认真察看包装袋上的商标、企业标准号、产品质量合格证、农业使用登记证、厂名、厂址、生产日期是否齐全,包装是否完好,液体肥料则要注意可溶性如何、有无沉淀等。二、施肥目的。施肥要有针对性,在基肥不足的情况下,可以选用以氮磷肥为主的叶面肥;在基肥施用充分时,要选用以微量元素为主的叶面肥,也可根据作物的不 The main role of foliar fertilization is to make up for insufficient soil fertilization, prevent premature aging plants, and promote crop nutrition balance. Proper use of foliar fertilizer can increase crop yields, improve crop quality and increase crop stress resistance. To improve the use of foliar fertilizer, should pay attention to the following points: First, the quality of fertilizer. When you choose to buy foliar fertilizer, pay attention to the quality, carefully look at the bag on the trademark, the enterprise standard number, product quality certification, agricultural use registration certificate, name, address, production date is complete, the packaging is intact, liquid fertilizer Should pay attention to how soluble, with or without precipitation. Second, the purpose of fertilization. Fertilization should be targeted, in the case of insufficient base fertilizer, you can choose to use nitrogen and phosphorus-based foliar fertilizer; in the full base fertilizer, to use trace element-based foliar fertilizer, but also according to the crop is not