The Infrared Spectrum Analysis on Compound Urea with Humic Acid Extracted from Weathered Coal
After treated with alkaline solution and then centrifuged, weathered coal was divided into water-soluble humic acid and deposi- tion. Then as the urea synergist materials, weathering coal, humic acid and deposition were respectively mixed with melted urea according to different proportion to produce...
Main Authors: | LIU Zeng-bing, SHU Ai-ping, ZHAO Bing-qiang, LIN Zhi-an, LIU Guang-rong, LI Zu-zhang |
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Format: | Article |
Language: | zho |
Published: |
Agro-Environmental Protection Institute, Ministry of Agriculture
2014-10-01
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Series: | Journal of Agricultural Resources and Environment |
Subjects: | |
Online Access: | http://www.aed.org.cn/nyzyyhjxb/html/2014/5/20140501.htm |
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