Abstract
The unfavorable effect on the untrients absorption is more notable by Al^… than by H^・. And what more, this effect is more distinct on the neutral-loving plants than on the acid-loving plants. The absorption ratio of NH_4-N/NO_3-N is heightened by Al^…, and lowered by H^・. The inhibition order of the nutrients absorption is shown as follows : CaO, MgO, NO_3-N, K_2O, NH_4-N, H_2O, P_2O_5 The translocation of P_2O_5 from roots to the top is hindered from Al^….
