第一章 肥料的概念分类和定义.ppt

Coated Fertilizer 包膜肥 ——Granular fertilizer that is covered with a thin layer of different material in order to improve the behavior and/or modify the characteristics of the fertilizer (ISO). Terminology and Definitions Slow-Release Fertilizer 缓释肥 ————A fertilizer whose nutrients are present as a chemical compound or whose physical state is such that the nutrient availability to plants is spread over time (ISO). Terminology and Definitions Controlled-Release Fertilizer 控释肥料 ————Fertilizer in which one or more of the nutrients have limited solubility in the soil solution, so that they become available to the growing plant over a controlled period. The idea in such a fertilizer would be the release of nutrients at a rate equal to the needs of the plant. Terminology and Definitions 控释肥料（Controlled Release Fertilizer）：采用聚合物包膜，可定量控制肥料中养分释放数量和释放期，使养分供应与作物各生育期需肥规律吻合的包膜复合肥和包膜尿素。 缓释肥料（Slow Release Fertilizer）：采用物理、化学和生物化学方法制造的能使肥料中养分（主要是氮和钾）在土壤中缓慢释放，使其作物有效性明显延长的肥料。缓释期和缓释量无定量规定。 Liquid Fertilizer 液体肥 ————A term used for fertilizer in suspension or solution and for liquefied ammonia (ISO). Terminology and Definitions Plant Food Ratio 养分配比 ————The ratio of the number of fertilizer units in a given mass of fertilizer expressed in the order of N-P-K (ISO). e.g. 10-20-20 a 1-2-2 ratio Terminology and Definitions Dose rate; Dose 养分含量 ————The mass or volume of a fertilizer or soil conditioner or nutrient applied to unit area of cultivated land or unit mass of growth medium (ISO). Contents Commonly Used Abbreviation Abbreviation Name of products AN Ammonium nitrate 硝酸铵 APS Ammonium phosphate sulfate 柳林酸铵 APP Ammonium polyphosphate solution 聚磷酸铵液 AS Ammonium sulfate 硫酸铵 CAN Calcium ammonium nitrate 硝酸铵钙 CN Calcium nitrate 硝酸钙 DAP Diammonium phosphate 磷酸二铵 MAP Monoammonium phosphate 磷酸一铵 MOP Muriate of potash (fertilizer-grade KCl) 氯化钾 SOP Sulfate of potash (fertilizer-grade K2SO4) 硫酸钾 Sul-Po-Mag Sulfate of potash-magnesium 硫酸钾镁 SSP Single