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The effects of humic acid urea and polyaspartic acid urea on reducing nitrogen loss compared with urea

文献类型： 外文期刊

作者： Shen, Yuwen 1 ; Lin, Haitao 1 ; Gao, Wensheng 3 ; Li, Mingli 3 ;

作者机构： 1.Shandong Acad Agr Sci, Inst Agr Resources & Environm, Shandong Prov Engn Res Ctr Environm Protect Ferti, Key Lab Wastes Matrix Utilizat,Minist Agr, Jinan, Peoples R China

2.State Key Lab Nutr Resources Integrated Utilizat, Linshu, Peoples R China

3.Shandong Agr Dept, Fruit & Tea Tech Extens Stn, Jinan, Peoples R China

关键词： synergistic nitrogen fertilizer; urea-N; gaseous nitrogen loss; nitrogen use efficiency

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）

ISSN： 0022-5142

年卷期： 2020 年 100 卷 12 期

页码：

收录情况： SCI

摘要： BACKGROUND The utilization rate of urea-N in fertilizer plays a very important role in agricultural production and environmental protection. Humic acid urea (HAU) and polyaspartic acid urea (PAU) are two similar synergistic nitrogen fertilizers. METHODS Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD) and carbon-13-nuclear magnetic resonance (C-13-NMR) were used to determine the loading of urea-N into humic acid (HA) and polyaspartic acid (PA). Thermal stability and physical adsorption properties of HAU and PAU were assessed by thermogravimetric analysis (TGA) and Brunauer-Emmett-Teller (BET) surface measurement. The soil incubation experiment was conducted to investigate the effects of HAU and PAU on nitrogen transformation and gaseous nitrogen loss compared with commercial urea. RESULTS Nitrogen transformation from HAU and PAU was slowed down compared with urea. After 90 days of incubation, HAU and PAU reduced the cumulative ammonia (NH3) volatilization (by 9.70% and 6.30%, respectively) and nitrous oxide (N2O) emission (by 40.48% and 43.00%, respectively) from soil compared with the urea-alone treatment. CONCLUSION HAU and PAU could improve the nitrogen use efficiency. (c) 2020 Society of Chemical Industry

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