热带农业科学2025，Vol.45Issue(1)：39-44,6.DOI:10.12008/j.issn.1009-2196.2025.01.007
保水型包膜尿素在海南砖红壤中保水缓释效果研究
Study on the Water-retention and Nutrient Slow-Release Characteristics of Water-Retaining Coated Urea in Hainan Latosols
摘要
Abstract
The water-retaining coated urea with 3%,6%,and 9%coating proportions were developed via the core-shell coat-ing process,and the water retention and slow-release properties of water-retaining coated urea in Hainan latosol were studied.The results showed that the surface of the water-retaining coated urea formed a water-retaining agent film with a thickness of 57.6～191.5 μm.Compared with ordinary urea,water-retaining coated urea reduced the nitrogen leaching rate,and the initial nitrogen leaching rate was significantly reduced by 33.04%～55.48%.With an increase in the coating material,the nitrogen slow-release performance of water-retaining coated urea was gradually increased.Moreover,the addition of water-retaining coated urea improved the water retention capacity of the latosol,the soil water evaporation rate of latosol with water-retaining coated urea decreased by 7.30%～20.86%within 30 days,and the water retention performance could be improved by increasing the amount of coating material.The water-retaining coated urea demonstrates good water retention and slow-release effects in latosol,and its performance can be regulated by adjusting the amount of coating material,which provides the possibility for promoting the use of water-retaining coated urea in agricultural production in the Hainan latosol region.关键词
保水型包膜尿素/缓释性能/保水性能/砖红壤Key words
water-retaining coated urea/slow-release performance/water retention performance/latosol分类
农业科技引用本文复制引用
张实玉,杨红竹,刘海林,林清火,茶正早,罗微..保水型包膜尿素在海南砖红壤中保水缓释效果研究[J].热带农业科学,2025,45(1):39-44,6.基金项目
中央级公益性科研院所基本科研业务费专项(No.1630022022002) （No.1630022022002）
海南省自然科学基金(No.320QN348) （No.320QN348）
现代农业产业技术体系建设专项资金项目(No.CARS-33-ZP2). （No.CARS-33-ZP2）
