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根据目前土普化验工作存在的问题,对白浆土有效磷测定方法进行了筛选。结果表明,Olsen法与玉米百分产量是极显著相关,与Fe—P和Ca—P是显著相关,而玉米百分产量与Fe—P呈极显著相关,同Ca—P呈显著相关,因而认为Olsen法不仅是省内石灰性土壤和中性土壤有效磷测定的好方法,同时也是白浆土有效磷测定的好方法。
According to the problems existing in the current TuPu laboratory work, the determination method of available phosphorus in albic soil was screened. The results showed that the Olsen method was significantly correlated with the corn yield and significantly correlated with Fe-P and Ca-P, while the corn yield was significantly correlated with Fe-P and significantly correlated with Ca-P The Olsen method is not only a good method for the determination of available phosphorus in calcareous soil and neutral soil in the province, but also a good method for determination of available phosphorus in white soil.