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采用Olsen、Bray I.BrayII、Al-Abbas等四种方法,测定土壤的有效磷含量。将其值分别与小麦(n=9)、水稻(n=12)的产量和~(32)p测定的土壤A值比较,进行土壤供磷能力的相关分析。结果得出,Olsen法与小麦、水稻产量的r值分别为0.764和0.603,与小麦、水稻分蘖期土壤A值的r值分别为0.802和0.631,故可作为测定黄壤性水稻土有效磷含量的标准方法。
Four methods, Olsen, Bray I. BrayII and Al-Abbas, were used to determine the soil available P content. The results were compared with those of wheat (n = 9), rice (n = 12) and soil A of ~ (32) p, respectively. The results showed that the r values of Olsen method and wheat and rice were 0.764 and 0.603, respectively, which were 0.802 and 0.631, respectively, compared with those of wheat and rice at tillering stage. Therefore, it could be used to determine the content of available phosphorus in yellow paddy soil Standard method.