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应用放射性~(32)P 标记过磷酸钙,研究了15种土壤的农化性状对土壤有效磷容量的影响。土壤有效磷容量用 Ap 值表示。并应用多元逐步回归分析方法,对 Ap 值同大豆产量、同土壤的10种农化性状之间的相关性进进行了分析。
The radioactive (32) P labeled calcium superphosphate was used to study the effects of agronomic characters of 15 soils on soil available phosphorus. Soil available phosphorus capacity with Ap value. The correlation between Ap value and soybean yield, and the ten agronomic characters of soils was analyzed by multiple stepwise regression analysis.