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机构地区:[1]兰州大学现代物理系
出 处:《兰州大学学报(自然科学版)》1998年第1期81-84,共4页Journal of Lanzhou University(Natural Sciences)
摘 要:利用褐煤腐植酸制备硝基腐植酸的同时,加入(NH4)2CO3和Ca3(PO4)2,生成含有R-COONH4的腐植酸复合肥料;同时研究了H+,NH+4,Mg2+,Ca2+,Fe2+离子的竞争反应及去向;这种肥料既有显著的肥效,又不会对土壤造成污染.The humic compound fertitizers containing R COONH 4 and NH 4H 2PO 4 have been made by adding (NH 4) 2CO 3 and Ca 3(PO 4) 2 into the nitrified brown coal, which was obtained previously by reacting brown coal with nitric acid. The competition and migration of H +,NH + 4, Mg 2+ , Ca 2+ , Fe 2+ etc. also are studied in this paper. The results demonstrate that the fertilizers have resulted in no soil contamination and they can remarkably enhance the yields of agriculture.
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