植物除了主要通过根系吸收养分外,还可通过叶部吸收养分,而且这些养分也可在植物体内同化和运转。叶部吸收营养与其新陈代谢作用有着密切的关系,代谢作用旺盛时,叶部吸收养分的强度就大。但这种吸肥方式,只是一种辅助性的方法,它并不能代替根系的吸收。根外追肥具有它的特点,叶部营养可以直接供给植物有效养分。防止养分由于施入土壤而被固定,降低其有效性。叶部吸收的 In addition to absorbing nutrients primarily through roots, plants also absorb nutrients through the leaves, and these nutrients can also be assimilated and run in plants. Leaf absorption of nutrients and its metabolism has a close relationship, strong metabolism, leaf absorb nutrients intensity. However, this method of absorption of fat, is only an auxiliary method, it does not replace the root absorption. Top dressing has its own characteristics, leaf nutrition can be directly supplied to the plant effective nutrients. Prevent nutrients from being immobilized by soil and reduce their effectiveness. Absorption of leaves