Analysis And Regulation On Agriculture Phosphorus Availability In Zhoukou District

Phosphate fertilizer is the important material guarantee of food security. Low efficiency of phosphate fertilizer not only increased agricultural cost, but also enhanced the eutrophication of water body. On the base of the analysis results, the paper studied the ways for increasing phosphate availability in Zhoukou district.(1) It introduced the reactions including precipiation-dissolution, adsorption-desorption and oxidation-reduction, discussed the factors of phosphate availability and phosphate migration regularity in soils, and decribed status of fertilizer phosphate and soil phosphate in agricuture.(2) It expounded fertilizer phosphate in agricultural production and phosphate in soil, and disussed the factors of phosphate availability in soil in Zhoukou district.(3) It indicated the measures for increasing phsophate availability from the optimum allocation, phospate modification ways and application methods.