| 稀盐溶性磷表征石灰性土壤供磷能力的研究 |
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| 引用本文： | 沙丽清,周斐德,邵则瑶.稀盐溶性磷表征石灰性土壤供磷能力的研究[J].土壤通报,2001,32(1). |
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| 作者姓名： | 沙丽清 周斐德 邵则瑶 |
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| 作者单位： | 1. 中国科学院西双版纳热带植物园森林生态室,
2. 中国农业大学植物营养系, |
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| 摘 要： | 稀盐 ( 0 .0 1mol/LCaCl2 )提取的磷与冬小麦相对吸磷量的线性相关系数r为 0 734 ,达 0 0 1 %显著水平 .与其他化学方法 (如Olsen、Machigin、Al-Abbas、MehlichⅢ、Mesheryakov)和电超滤法 (EUF)的相关性也达 0 1 %显著水平 .该法操作简便、快速、经济 ,还可以在同一提取液中同时测定氮、磷、钾及其它营养元素 ,是测定石灰性土壤有效磷的可靠方法
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| 关 键 词： | 有效磷 石灰性土 |
Dilute salt extractable phosphorous for characterizing the capacity of phosphorous supply of calcareous soils |
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| SHA Li-qing,ZHOU Fei-de,SHAO Ze-yao.Dilute salt extractable phosphorous for characterizing the capacity of phosphorous supply of calcareous soils[J].Chinese Journal of Soil Science,2001,32(1). |
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| Authors: | SHA Li-qing ZHOU Fei-de SHAO Ze-yao |
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| Abstract: | We discussed dilute salt (0.01 mol L -1 ) extractable P for characterizing the capacity of P supply of Calcareous soils. The dilute extractable P was significantly correlated with relative P uptake of winter wheat evaluated by pot experiments. The dilute extractable P was also related to the P extracted by using other methods, such as Olsen, Machigin, Al-Abbas, Mehlich, Mesheryakov and EUF. The supposed method here is simple, rapid, and cheap. In addition, it has the advantage of simultaneous determination of N, P, K and many other nutrients. However, further study is needed for the use as available P indexes. |
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| Keywords: | Available phosphorous Calcareous soil |
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