山东农业大学学报（自然科学版）2016，Vol.47Issue(5)：696-700,5.DOI:10.3969/j.issn.1000-2324.2016.05.011
保水剂吸水、释水及吸肥特性研究
Study on Characteristics of Absorption, Release and Fertilizer Absorption of Water Retaining Agent
摘要
Abstract
4 kinds of water retaining agents with crosslinked polyacrylamide from Beijing Hanlimiao New Technology Co. Ltd. were used as the experimental materials. The absorption, release and macro-nutrient absorption performance of water retaining agent with different concentrations were studied. The results showed that with the increasing concentration, water absorption multiples, water absorption rate and repeated water absorption multiples showed decreasing trend;water release rate in the first 36 h became more and more big and smaller and smaller between 48 h and 60 h. The adsorption of N, P elements were increased at first and then decreased, K elements showed a continuous increasing trend. Small and medium diameter water retaining agent′s water absorption multiples, water absorption rate and repeated water absorption multiples were significantly affected by solution concentration;the larger particle size, the greater water release rate and the adsorption of N, P and K elements increased first and then decreased. Medium diameter B specifications of selected water retaining agent showed better characteristics in water absorption, water release and macro-nutrient absorption than that of other specifications of water retaining agent.关键词
保水剂/吸水/释水/吸肥/溶液浓度Key words
Water retaining agent/water absorption/water release/fertilizer absorption/solution concentration分类
建筑与水利引用本文复制引用
杨静静,王秀峰,魏珉,杨凤娟,史庆华..保水剂吸水、释水及吸肥特性研究[J].山东农业大学学报（自然科学版）,2016,47(5):696-700,5.基金项目
国家现代农业产业技术体系专项资助(CARS-25) （CARS-25）
国家科技支撑计划项目(2014BAD05BOO) （2014BAD05BOO）
