无机包膜肥料的制备及电导法对其养分释放率的测定  

The Preparation of Inorganic Coated Fertilizer and Determination of Nutrient Releasing Rate by Electric Conductivity

作　　者：刘书起[1] 甄英肖[1] 董建普[1] 

机构地区：[1]河北省农林科学院滨海农业研究所,河北唐海063200

出　　处：《现代农业科技》2010年第19期241-242,共2页Modern Agricultural Science and Technology

摘　　要：采用磷酸铵镁盐对复混肥料进行了包膜处理,用聚酯类化合物再对包膜颗粒进行封面,制备了无机包膜肥料。用电导法测定了包膜肥料的养分释放率,研究了包膜及其材料对养分释放的控制作用和影响。结果表明:磷酸铵镁盐包膜可以延缓养分的释放;聚酯化合物封面比不封面的无机包膜肥料养分释放缓慢得多;应用电导法测定无机包膜肥料的养分释放率是可行的。The compound fertilizer was coated with magnesium-ammonium phosphate and then that was closed with polyurechane,thus preparation of inorganic coated fertilizer was completed.The nutrient releasing rate was evaluated by the measurement of conductivity.The Control function of capsule and influence of its materials on nutrient releasing rate were studied.The results showed that the capsule of magnesium-ammonium phosphate might delay the release of nutrients for some time;inorganic coated fertilizer closed with polyurechane released nutrient much slower than that naked one.It is concluded that Evaluating the nutrient releasing rate by the measurement of electric conductivity is workable.

关 键 词：无机包膜肥料 制备 电导法 养分释放率 测定 

分 类 号：S145.6[农业科学—肥料学] TQ449.1[农业科学—农业基础科学]