Prospects and present status of slow-release/controlled-release fertilizer with super-absorbent and water-retention

The combination of the slow-release/controlled-release fertilizer technique and super-absorbent polymers can form slow-release/controlled-release fertilizer with super-absorbent and water-retention,which have dual properties of water retention capacity and controlled release at the same time.This paper reviews the present status, preparation and determining method of nutrient release of slow-release/controlled-release fertilizer with super-absorbent and water-retention.The problems and development trends of slow-release/controlled-release fertilizer with super-absorbent and water-retention are also analyzed.