锌是作物生长不可缺少的微量元素,缺锌会引起植株矮小,节间短簇,叶片扩展和伸长受到抑制,出现小叶,叶缘出现扭曲和皱折等。玉米白化苗、水稻僵苗等都是缺锌引起的。实践证明,在水稻、玉米、小麦、棉花、油菜、果树、蔬菜、大豆、花生、马铃薯、烟草等作物上施用锌肥,能促进作物生长发育,提高结实率,提高产量10%～30%。在施用锌肥时要注意以下几点: Zinc is an indispensable trace element of crop growth, zinc deficiency will cause short plants, internodes short clusters, leaf expansion and elongation are inhibited, the emergence of leaflets, leaf edges appear distorted and wrinkled. Corn albino seedlings, rice paddies are all caused by lack of zinc. Practice has proved that the application of zinc fertilizer on crops such as rice, corn, wheat, cotton, canola, fruit trees, vegetables, soybean, peanut, potato and tobacco can promote the growth and development of crops, increase the seed setting rate and increase the yield by 10% to 30%. When applying zinc fertilizer should pay attention to the following points: