本文概括总结了近代有关苹果树Ca吸收、移动和分配的许多新资料。图1用图解的方式介绍了苹果园钙循环中输入和损耗所涉及的因素;并提出在这种复杂的相互关系作用下,钙的代表性浓度。 根群的总体积、根密度、根在土壤中的分布以及与树体生命活动有关的周期性生长和活动,都会影响 This article summarizes many modern new information on Ca absorption, movement and distribution in apple tree. Figure 1 provides a graphical representation of the factors involved in input and depletion of apple orchards in the calcium cycle; and presents representative concentrations of calcium under this complex interrelationship. The total volume of root groups, root density, root distribution in the soil, and the periodic growth and activity associated with the tree’s life activities all affect