植物营养与肥料学报Issue(3)：636-641,6.DOI:10.11674/zwyf.2014.0315
控释尿素在水及不同类型土壤中的养分释放特征
Nutrient release characteristics of controlled-release urea in water and different soils
摘要
Abstract
Nutrient release characteristics of controlled-release urea ( CRU) in water and soils was studied , and the differences of nutrient release characteristics of CRU in water and soils were compared and the effects of soil types on nutrient release characteristics of CRU in different soils were also studied .The results show that the preliminary soluble rate of CRU is 1.7%, the cumulative release rate in the 28 days is 59.2%, and the release period is about 50 days under 25 ±0.5℃.The nutrient release rate of CRU in the paddy soil at the first 50 days is significantly lower than those of the fluvo-aquic soil and yellow-brown soil .The releasing rate of N in the paddy soil from 50 d to 140 d is the highest .After 140 days, there is no relationship between the nutrient release rate and the soil type . The nutrient release rates of CRU in different types of soil are significantly associated with those in water .关键词
控释尿素/静水溶出率/土壤类型/养分释放特征Key words
controlled-release urea/release rate in water/soil type/nutrient release characteristics分类
农业科技引用本文复制引用
王素萍,李小坤,鲁剑巍,陈钢,刘波,薛欣欣,魏云霞..控释尿素在水及不同类型土壤中的养分释放特征[J].植物营养与肥料学报,2014,(3):636-641,6.基金项目
公益性行业（农业）科研专项（201303103）；“十一五”国家科技支撑计划重点项目（2010BAD01B05）资助。 （）
