Review on slow-release fertilizer

This paper is based on author's published paper and mainly considered and reviewed on the concept,research object,producing cost of slow-release fertilizer(SRF) and its affect on agro-ecology environment.The author put emphasis on that the release rate of SRF may get difference results between the pure water in laboratory and the soil solution in the field;the cost and selling price in unit nutrient of SRF could be remarkable higher than the common fertilizer.SRF would increase energy consumption during its production and transportations and emission more CO2 to the air.Also,some harmful materials such as formaldehyde.Polyene and over-dose sulphur would be brought with SRF into soil and (agroecology) environment.Some suggestions for developing and agrochemical evaluating of SRF have presented by the(author),such as using soil true solution to instead of pure water to determine the dissolving characters of SRF;applying (15N)-urea to research the nitrogen fate of SRF and standardizing the way and the result presentation for field experiment of SRF,etc.