关于采用淋洗法测试钾钙肥中钾素缓释性能的探讨  

Concerning Discussion on Testing of Slowly Releasing Property of Potassium Element Contained in Potassium-Calcium Fertilizer Using Spray Washing Method

作　　者：江鸥[1] 朱云勤[1] 陈文建[1] 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025

出　　处：《化肥设计》2010年第2期56-58,共3页Chemical Fertilizer Design

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"。合同编号:黔科合成字(2006)5005

摘　　要：以钾含量为7.8%的钾钙肥为研究对象,分别采用水浸泡法和淋洗法(间歇淋洗和连续淋洗)研究了钾钙肥中钾的缓释性能;考察了不同模拟土壤介质的淋洗结果。实验表明:①水浸泡法与无介质连续淋洗法的测试结果具有良好的相关性;②相同介质的间歇淋洗和连续淋洗亦具有良好的相关性;③采用蛭石和草炭的混合物(体积比为1∶1)能从含水率、水分张力以及阳离子交换量等方面综合模拟土壤性能,以此模拟土壤并采用淋洗法可较好地测试钾钙肥中钾素的缓释性能。Taking the potassium-calcium fertilizer containing potassium content of 7.8% as the research object,author has adopted separately water soak method and spray washing method（intermittent and continuous methods） to research the slowly releasing property of the potassium contained in potassium-calcium fertilizer;has investigated the spray washing results of different simulated soil medium.Experiment indicates that：（1） Test result of watersoak method and non-medium continuous spray washing method has good correlation;（2）Intermittent spray washing and continuous spray washing for equal medium has their good correlation;（3） Adopting the mixtures ofvermiculite and peat（volume ratio 1：1） can comprehensively simulate the soil property from aspects of water content rate,water moisture tension and positive ion exchange quantity etc.,on this account simulating soil and adopting spray washing method can better test slowly releasing property of potassium contained in the potassium-calcium fertilizer.

关 键 词：钾钙肥 钾 缓释性 测试 水浸泡法 淋洗法 模拟土壤 

分 类 号：S143[农业科学—肥料学]