热带作物学报2017，Vol.38Issue(1)：33-37,5.DOI:10.3969/j.issn.1000-2561.2017.01.007
保水缓释肥料保水性能及养分释放特性
Water-retention and Nutrient Release Characteristic of Water-retentive Slow-release Fertilizer
摘要
Abstract
In order to define the water-retention and nutrient slow-release effect of the fertilizer which added water soluble water retention agent (carboxymethyl cellulose,polyacrylamide and polyacrylate sodium),the water-retentive slow release fertilizer was made by pan granulation in this study.The water-retention and nutrient release property of water-retentive slow-release fertilizer in the soil was studied.Soil maximum water-holding rate and soil moisture evaporation rate of water-retentive slow-release fertilizer were detected by indoor incubation experiment,the nitrogen,phosphorus,potassium cumulative release rate of the water-retentive slow-release fertilizer were measured by the intermittent soil column leaching experiment.Results showed that all the three kinds of waterretentive slow release fertilizers had water-retention and slow-release effect.The soil maximum water-holding rate increased with increasing the amount of water-retentive slow-release fertilizer,but the soil moisture evaporation rate was just the opposite.Among them,the water-retentive slow-release fertilizer added polyacrylate sodium had the best water-retention and nutrient slow-release effect.For the first leaching,the nitrogen,phosphorus,potassium cumulative release rate decreased by 50.38％,55.74％,48.37％,respectively;When the application of the fertilizer was 2％,the soil maximum water-holding rate increased by 43.28％,the soil moisture evaporation rate was reduced by 22.86％ after cultivation for 30 d.关键词
水溶性保水剂/缓释肥料/保水/养分释放率Key words
soluble water retention agent/slow-release fertilizer/water-retention/nutrient release rate分类
农业科技引用本文复制引用
刘海林,王龙宇,林清火,华元刚,林钊沐..保水缓释肥料保水性能及养分释放特性[J].热带作物学报,2017,38(1):33-37,5.基金项目
海南省自然科学基金(No.20153098) （No.20153098）
中国热带农业科学院橡胶研究所基本业务费专项(No.1630022015024) （No.1630022015024）
现代农业产业技术体系建设专项资金项目(No.CARS-34). （No.CARS-34）
