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浏览/检索结果: 共3条，第1-3条 帮助 限定条件 学科主题：soil science     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Soil nitrogen and its fractions between long-term conventional and no-tillage systems with straw retention in dryland farming in northern China 期刊论文 GEODERMA, 2016, 卷号: 269, 页码: 138-144 作者:  Zhang, Hengheng;  Zhang, Yanqing;  Yan, Changrong;  Liu, Enke;  Chen, Baoqing 收藏  |  浏览/下载：3/0  |  提交时间：2016/12/06 No-tillage  Conventional tillage  Soil total nitrogen  Labile soil organic nitrogen  Soil NO3-N and NH4-N   Improving Yield and Nitrogen Use Efficiency Simultaneously for Maize and Wheat in China: A Review 期刊论文 PEDOSPHERE, 2016, 卷号: 26, 期号: 2, 页码: 137-147 作者:  Meng Qingfeng;  Yue Shanchao;  Hou Peng;  Cui Zhenling;  Chen Xinping 收藏  |  浏览/下载：7/0  |  提交时间：2016/12/05 crop N requirement  high yield  integrated soil-crop system management  N application timing  N demand   Optimization of land use structure and spatial pattern for the semi-arid loess hilly-gully region in China 期刊论文 CATENA, 2010, 卷号: 81, 期号: 3, 页码: 196-202 作者:  Gao, Qingzhu;  Kang, Muyi;  Xu, Hongmei;  Jiang, Yuan;  Yang, Jie 收藏  |  浏览/下载：5/0  |  提交时间：2016/12/06 Land use structure and spatial pattern  Ecological security  Soil erosion  Water consumption  Geographical information system (GIS)  Multi-objective programming