锌是水稻生长发育所需要的重要微量元素之一。它能促进作物光合作用，参与生长素的合成；同时，也是许多酶的组成成份，对作物的生长发育十分重要，有些类型的土壤本身缺锌，加之近年来又大量施用不利于锌的吸收和利用的多种化肥，造成了锌的明显缺乏，使水稻出现“稻缩苗”， Zinc is one of the important trace elements required for the growth and development of rice. It can promote the photosynthesis of crops and participate in the synthesis of auxin. At the same time, it is also a component of many enzymes and is very important to the growth and development of crops. Some types of soil itself are deficient in zinc, and in recent years, they are not conducive to the absorption of zinc The use of a variety of fertilizers, resulting in the apparent lack of zinc, so that rice appeared “rice seedlings”