Department of Floriculture and Ornamental Horticulture, Cornell University, Ithaca, New York.
Plant Physiol. 1966 Apr;41(4):610-3. doi: 10.1104/pp.41.4.610.
Young bean plants (Phaseolus vulgaris) containing root-absorbed (45)Ca and (86)Rb were leached to determine the pathway and mechanism of cation loss by leaching. Calcium is leached from the exchangeable calcium fraction within the plant by a process of ion exchange and diffusion involving exchange sites both within the leaf and on the leaf surface. Leaching of cations is primarily a passive process, although some metabolites may be deposited upon leaf surfaces by active processes. The exchange and diffusion explanation is compatible with current theories of ion uptake and translocation and explains the results of numerous experiments on leaching reported in the literature.
年轻的菜豆植株（菜豆属植物）吸收根中的（45）Ca 和（86）Rb 后被淋洗，以确定淋洗过程中阳离子损失的途径和机制。Ca 是通过一个涉及叶内和叶表面交换位点的离子交换和扩散过程从植物的可交换钙部分淋洗出来的。阳离子的淋洗主要是一个被动过程，尽管一些代谢物可能通过主动过程沉积在叶表面。交换和扩散的解释与目前的离子吸收和转运理论是一致的，并解释了文献中报道的许多关于淋洗的实验结果。
