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根外施肥是果树的一种辅助施肥方法。它将含一定肥料浓度的水溶液,用喷雾器喷洒在柑桔树冠上,使肥料被树体吸收。为什么柑桔果树树冠喷肥后能被叶片、幼嫩的枝和果所吸收呢?这是因为植物的营养元素,能通过叶片上的气孔(主要在叶背)及角质层进入叶片,而后运送到树体内和各个器管。
Root fertilization is a secondary method of fruit tree fertilization. It will contain a certain concentration of aqueous fertilizer solution, sprayed with a spray on the citrus canopy, the fertilizer is absorbed by the tree. Why citrus fruit tree canopy can be absorbed by the leaves, young branches and fruit after spraying fertilizer? This is because the plant’s nutrition elements can enter the leaves through the stomata (mainly in the leaf back) and the stratum corneum of the leaves, and then transported To the tree body and each tube.