钾钙肥中氧化硅的缓释性研究(一)  

Study of Slow-Release Properties of Silicon Oxide in Potash-Calcium Fertilizers(PartⅠ)

作　　者：江鸥[1] 朱云勤[1] 陈文建[1] 李令[1] 孟铁宏[1] 

机构地区：[1]贵州大学化学与化工学院,贵阳550025

出　　处：《化肥工业》2009年第4期32-34,38,共4页Chemical Fertilizer Industry

基　　金：贵州省科技成果重点推广计划项目"钾钙肥工业生产示范"项目(合同编号:黔科合成字[2006]5005)

摘　　要：对钾钙肥中有效氧化硅的缓释性进行了研究。分别以水和质量分数为2%的柠檬酸水溶液为浸取液,测定氧化硅随时间变化的溶出率,并模拟植物吸收养分试验,测定氧化硅的累积溶出率。结果表明:氧化硅在水中的溶出率小于其在柠檬酸溶液中的溶出率;在模拟植物吸收养分的情况下,氧化硅完全符合缓释肥标准;钾钙肥中的氧化硅有很好的缓释性。The slow-release properties are studied of the available silicon oxide in potash-calcium fertilizers. Water and citric acid solution of 2% mess fraction are used as leach liquor, respectively, the dissolubility of silicon oxide, which varies with time, is determined; and the cumulative dissolubility of silicon oxide is determined with an experiment on simulation of a plant absorbing nutrients. The results show that the dissolubility of silicon in water is less than that in citric acid solution; under the condition that simulates a plant absorbing nutrients, silicon conforms completely to the standard for slow-release fertilizers and the silicon in the fertilizers has very good slow-release properties.

关 键 词：钾钙肥 缓释性 研究 

分 类 号：TQ174.758[化学工程—陶瓷工业] S145.6[化学工程—硅酸盐工业]