Abstract:Spring wheat pot experiments were used to study the slow release effect and mechanism of palygorskite coated fertilizer. The results show that palygorskite coated phosphorus helps to make a slow release of fertilizer, to increase the weight per 1 000 grains, the economic coefficients, the economic yield, and the biomass of spring wheat, and to promote the transformation of biochemistry matter in spring wheat and the delayed aging. Therefore, palygorskite can be used as a new type of slow-release fertilizer coating materials in production.