作物生长,除需要氮、磷、钾三元素外,还需要从土中吸收利用一定量的镁、硫、硅、钼、锌、锰、硼、铜等,由于其需要量少,所以,称其微量元素肥料。微量元素在作物体内虽然含量极少,但却有着特殊的作用,影响着作物的生长发育及光合作用和新陈代谢。比如:锰元素能促进种子发芽和幼 Crop growth, in addition to the need for nitrogen, phosphorus and potassium three elements, but also from the soil absorption and utilization of a certain amount of magnesium, sulfur, silicon, molybdenum, zinc, manganese, boron, copper, etc., due to its low demand, Its trace element fertilizer. Trace elements in the crop although the content is minimal, but it has a special role, affecting crop growth and development and photosynthesis and metabolism. For example: Manganese can promote seed germination and young