摘要
本文针对缓释肥的概念、研究对象、生产成本和对生态环境的影响等方面作了论述。文章强调,在室内纯水中获得的缓释肥特性测定值与将其施入田间土壤后的实际缓释值将有很大偏差;缓释肥单位养分的成本、售价将比普通肥显著提高;缓释肥在生产、运输过程中的能耗,特别是随产品带入土壤的过量硫、聚烯烃和甲醛等有害物质,将对生态环境产生不可低估的负面影响。论文提供了评价缓释肥农化性质的若干建议:如用土壤真溶液替代纯水去测定缓释肥的溶解特性;开展缓释肥的15N同位素标记研究以及规范田间与小区肥效试验等。
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 agro-ecology 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.
出处
《植物营养与肥料学报》
CAS
CSCD
北大核心
2006年第4期578-583,共6页
Journal of Plant Nutrition and Fertilizers
关键词
缓释肥料
硫包尿素
尿甲醛
农业生态环境
土壤真溶液
slow release fertilizer
sulphur coated urer（SCU）
urea-formalhydred （UF）
agro-ecology environment
soil true solution
