@article{oai:kpu.repo.nii.ac.jp:00004908, author = {森田, 修二 and Morita, Shuji}, journal = {京都府立大學學術報告. 農學, The scientific reports of Kyoto Prefectural University. Agriculture}, month = {Oct}, note = {植物根のカチオ置換容量(cation exchange capacity, CEC)は植物の養分摂取に関係が深い。ここにおいては先づ植物の養分吸収における根のCECの意義を述べる。次いでCECの実体, 測定方法, 測定値を記述する。さらに根の部位や成長とCECとの関係を説明する。根のCECとカチオン吸着間のドンナン平衡を論じ, またCECに関係ある種々の因子, 窒素, カチオン含量, 重金属, 粘土鉱物等について述べる。, Cation exchange capacity (CEC) of root is an important property for nutrient uptake by plant. CEC of plant root is measured by means of replacement and titration. The CEC values are much higher for dicotyledons than for monocotyledons. The Donnan principle explains the differential adsorption of monovalent and divalent cations by roots of high and low CEC. The highest CEC was found at the growing tip. Root CEC of young plant is higher than old one. CEC of root has some relation with nitrogen and cation content, and varies with amount and/or kind of heavy metal and clay mineral.}, pages = {142--158}, title = {植物根のカチオン置換容量と養分摂取(農芸化学部門)}, volume = {24}, year = {1972}, yomi = {モリタ, シュウジ} }