铜、锌、钼、硼在土壤中被称为微量元素,它们是植物正常生活和生长中不可缺少的元素。铜不仅能活化维生素B,而且能防止叶绿素分解,促进蛋白质合成。植物缺铜会使叶片失绿,丧失膨压和植物凋萎。锌是一些酶的组成和某些酶的活化剂,与叶绿素和生长素的合成有关,参与碳水化合物的转化,并能提高植物的抗寒性和耐盐性。硼是植物体内碳水化合物运输所必需,它保证植物同化作用产物从叶中正常流到根部和其它 Copper, zinc, molybdenum and boron are called trace elements in soil and they are indispensable elements in the normal life and growth of plants. Copper can not only activate vitamin B, but also prevent chlorophyll degradation and promote protein synthesis. Copper deficiency leaves the leaf green, loss of turgor and plant wilting. Zinc is the composition of some enzymes and activators of some enzymes, and the synthesis of chlorophyll and auxin, involved in carbohydrate conversion, and can improve the plant’s cold resistance and salt tolerance. Boron is required for the transport of carbohydrates in plants, which assures the normal flow of plant assimilation products from the leaves to the roots and others