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本研究的目的是,将小麦种植在~(32)P-正磷酸盐标记的土壤中,采样测定土壤磷的比放射性,并用同位素稀释法、A值法和总磷吸收法测定P的吸收。这三种方法测定的结果与用中性和酸性柠檬酸铵及2％甲酸浸提磷矿石测得的可溶性P相比较。
The purpose of this study was to planted wheat in ~ (32) P-orthophosphate-labeled soil and sampled to determine the specific radioactivity of soil phosphorus. The P uptake was determined by isotope dilution, A-value and total phosphorus uptake. The results of these three methods were compared to the soluble P measured with neutral and acidic ammonium citrate and 2% formic acid leached phosphate rock.