チャのマンガン・鉄に対する応答とそれらに及ぼすアルミニウムの影響

概要

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The nutrio-physiological characteristics of tea (Camellia sinensis L.) plants in acid soil were observed by examining the response to Mn and Fe with special reference to the Al supply. Some of the results obtained from this study were as follows : (1) The growth of tea plants was evidently promoted by Al supply, and there was no inhibition by Mn even at a concentration of 100 mg L^<-1>. Therefore, tea plants have a wide range of optimal concentration of Mn for normal growth. (2) When 300 mg L^<-1> of Mn was supplied to tea plants in the absence of Al, the leaves showed chlorosis and necrosis that were coincident with the decrease in the K/Mn ratio in tea shoots. However, the addition of Al alleviated these Mn-excess symptoms. (3) In the presence of Al, the absorption of Mn was promoted during the growth of the tea plants. However, there was no change in Fe concentration in the shoots. In the case of feeding different forms of Fe during the growth of tea, tea plants absorbed and utilized Fe (II) and Fe (III) at the same efficiency when Al was added. (4) With the addition of Al, tea roots in shaking liquid culture absorbed Fe from FePO_4 well, similar to Fe-EDTA although H^+ released from the root was consumed by the buffering action of Al.
社団法人日本土壌肥料学会の論文
1995-12-05