Nitrogen Mineralization Potentials of Upland Soils in Central China土壤圈：英文版论文
【题名】：Nitrogen Mineralization Potentials of Upland Soils in Central China土壤圈：英文版论文(Nitrogen Mineralization Potentials of Upland Soils in Central ChinaTuRangQuan：YingWenBanLunWen) 【关键词】：中国 中部地区 台地 土壤 氮矿化能力 参数优化 【keywords】：ZhongGuo ZhongBuDiQu TaiDi TuRang DanKuangHuaNengLi CanShuYouHua 【作者】：CHENJIA－ZHOU,QINHUA－CHANG,      【来源】： 知识词典 【期刊名称】：土壤圈：英文版(TuRangQuan：YingWenBan) 【国际标准刊号】：1002-0160        【国内统一刊号】：32-1315 【作者单位】：[1]DepartmentofSoilandAgrochemistry,HuazongAgriculturalUniversity,Wuhan430070China [2]DepartmentofSoilandAg([1]DepartmentofSoilandAgrochemistry,HuazongAgriculturalUniversity,Wuhan430070China [2]DepartmentofSoilandAg) 【分类号】：S153.61 S143.1      【页码】：-127-133      【出版年】：1995.2         Nitrogen mineralization potentials of 15 soil samples were studied by the methods of soil aerobic incubation,and the correlation between the potentials and the amounts of nitrogen taken up by rye grass(Lolium,multiflorum Lam.) in pot culture was calculated.The soils were collected from Hubei Province in Central China.Soil nitrogen mineralization potentials(No) were calculated and optimized by a quick-BASIC program,No ranged from 60 mg kg^-1 to 340mg kg^-1,which accounted for 9.1%to 34.6% of the total nitrogen content.Among the examined soils,yellow-brown soil collected from Wuhan had the largest No and brown-red soil from Xianning had the smallest one.The mineralization rate constants(k) ranged from 0.00556d^-1 to 0.01280d^-1,in average 0.00882 d^-1,Chao soil from Wuhan had the greatest k while yellowcinamon soil from Zhaoyang had the smallest one.There were apparent differences between mineralization parameters(NO and k) optimized and non-optimized ones,Optimized No had a better correlation than non-optimized No with the amount of nitrogen accumulated in the aerial parts of rye grass.No,No×k and Nt(accumulated mineralized nitrogen Within time t ) could be used as indexes of soil nitrogen supply,Among them Nt was the best,which was significantly correlated with the amounts of nirogen accumulated in the aerial parts of rye grass harvested at three different times.
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