THE UPTAKE OF CALCIUM AND STRONTIUM BY PLANTS FROM SOILS AND NUTRIENT SOLUTIONS
THE UPTAKE OF CALCIUM AND STRONTIUM BY PLANTS FROM SOILS AND NUTRIENT SOLUTIONS
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DOI：
10.1093/jxb/7.2.264
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发表时间：
1956-01-01
影响因子：
6.9
通讯作者：
DYMOND, JA
中科院分区：
文献类型：
--
作者：
BOWEN, HJM;DYMOND, JA
番茄植株生长在营养土中。含有8种不同的Ca/Sr摩尔比，从2/1到4000/1。然后分别用火焰光度法和活化法分析了茎和根中的钙和锶。地上部不区分锶和钙，但根在低浓度时优先吸收锶。这一元素的。离子交换树脂在性质上表现出类似的效果。本文还对5种不同钙锶比土壤的大麦和紫花苜蓿枝条进行了分析。由于难以测量所用土壤中的有效钙锶比，这些分析的解释变得复杂起来。醋酸铵提取可能会对土壤中植物可利用的钙锶比产生误导的结果。
Tomato plants were grown in nutrient solns. containing eight different molar Ca/Sr ratios from 2/1 to 4000/1. The shoots and roots were then analysed for Ca and Sr using flame photometry and activation analysis, respectively. The shoots did not distinguish Sr from Ca, but the roots absorbed Sr preferentially at low concns. of this element. Ion exchange resins show a qualitatively similar effect. Analyses of barley and lucerne shoots from 5 soils con- taining different Ca/Sr ratios are also given. The interpretation of these analyses is complicated by the difficulty of measuring the available Ca/Sr in the soils used. Ammonium acetate extraction may give misleading results for the Ca/Sr ratios in the soil which are available to plants.