Controlled-release fertilizer (CRF): a green fertilizer for controlling non-point contamination in agriculture.
Fertilizers contribute greatly to high yields but also result in environmental non-point contamination, including the emission of greenhouse gas (N2O) and eutrophication of water bodies. How to solve this problem has become a serious challenge, especially for China as its high ecological pressure. Controlled-release fertilizer(CRF) has been developed to minimize the contamination while keeping high yield and has become a green fertilizer for agriculture. Several CRFs made with special coating technology were used for testing the fertilizer effects in yield and environment through pot experiment and field trial. The result indicated that the CRFs had higher N use efficiency, thus reducing N loss through leaching and volatilization while keeping higher yields. Comparing with imported standard CRFs, the test on CRFs showed similar fertilizer effect but with much lower cost. CRFs application is becoming a new approach for minimizing non-point contamination in agriculture.
Mao
Xiao-yun
XY
College of Resource and Environmental Sciences, South China Agriculture University, Guangzhou 510642, China. xiaoyunmao@163.net
Sun
Ke-jun
KJ
Wang
De-han
DH
Liao
Zong-wen
ZW
D000383:Agriculture / Q000295:instrumentation / Q000379:methods*; D018533:Biomass; D003692:Delayed-Action Preparations / Q000032:analysis*; D005308:Fertilizers / Q000032:analysis*; D005506:Food Contamination / Q000517:prevention & control*; D009584:Nitrogen / Q000737:chemistry; D012275:Oryza / Q000254:growth & development* / Q000378:metabolism; D012987:Soil / Q000032:analysis
D003692:Delayed-Action Preparations; D005308:Fertilizers; D012987:Soil; D009584:Nitrogen