我省大部分土壤供磷能力较差,成为增产的限制因素。本文研究了省内几种主要土类的供磷的动力学因素(R),试图把R值作为划分土壤肥力的指标,并建立了R值对有效磷量的回归方程,以了解有效磷和R值的联系,作为施用磷肥的依据。 Most of our soil phosphorus poor ability to become a limiting factor for increasing production. In this paper, the kinetic factors (R) of phosphorus supply in several major soil types in the province were studied, and R value was taken as an index to divide soil fertility. The regression equation between R value and available phosphorus was established to understand the available phosphorus and R value of the connection, as a basis for the application of phosphate fertilizer.