干旱区生态环境知识资源中心(Arid): 尿素糠醛缩合物缓释化肥的研究

Arid

	尿素糠醛缩合物缓释化肥的研究
其他题名	Condensation of Urea-furfural of Slow-release Fertilizer
	宋学君; 张旭东; 石元亮
来源期刊	环境科学与技术
ISSN	1003-6504
出版年	2011
卷号	34 期号:5 页码:77-79,166
中文摘要	为了提高尿素的利用率,改善土壤的耕作质量,笔者按尿素与糠醛的摩尔比(U/F)控制反应计量,得到尿素糠醛缩合物缓释化肥.加成反应缓冲试剂为Na2B4O7-H3BO3,pH值89,反应温度控制在4555℃,消去反应缓冲试剂为CH3COOH-CH3COONH4,pH值4.55,反应温度控制在60℃.测试结果表明,当U/F应介于(1.31.5):1时,得到产物的AI值均高于60%,产物在水中的溶出率和在土壤中的溶出率低于普通化肥.该低分子尿素糠醛缩合物是一种缓释化肥,不仅可以显著提高氮素的利用率,而且可以通过调整U/F值与植物生长周期相匹配.该缩合物还具有改善土壤,防止沙化,提高植物根部在土壤中的扎根能力
英文摘要	In order to improve the utilization of urea and quality of soil tillage,as a kind of slow-release fertilizer, the condensation product was prepared using urea and furfural according to molar ratio of urea and furfural(U/F).The buffer reagent of addition reaction was Na2B4O7-H3BO3, with pH 8~9 and temperature controlled at 45~55 ℃.The buffer reagent of elimination reaction was CH3COOH-CH3COONH4, with pH 4.5~5 and temperature controlled at 60 ℃. Tests showed that AI values of products were higher than 60% when U/F was(1.3~1.5):1.The dissolution rate of products in water and soil was lower than the ordinary urea. Urea-furfural condensate with low molecular weight which is a slow-releasing fertilizer can significantly improve the utilization of nitrogen. U/F can be selected according to the growth cycle of crops. The condensate can improve the quality of soil, prevent desertification and increase penetration performance of crop root in the soil
中文关键词	尿素 ; 糠醛 ; 缩合 ; 缓释化肥
英文关键词	urea furfural condensation slow-release fertilizer
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4187436
来源机构	中国科学院沈阳应用生态研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226734
作者单位	中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国
推荐引用方式 GB/T 7714	宋学君,张旭东,石元亮. 尿素糠醛缩合物缓释化肥的研究[J]. 中国科学院沈阳应用生态研究所,2011,34(5):77-79,166.
APA	宋学君,张旭东,&石元亮.(2011).尿素糠醛缩合物缓释化肥的研究.环境科学与技术,34(5),77-79,166.
MLA	宋学君,et al."尿素糠醛缩合物缓释化肥的研究".环境科学与技术 34.5(2011):77-79,166.