Arid

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Nitrogen and phosphorus effects on water use efficiency of spring wheat grown in a semi-arid region of the Canadian prairies 期刊论文
发表期刊: CANADIAN JOURNAL OF SOIL SCIENCE. 出版年: 2012, 卷号: 92, 期号: 4, 页码: 573-587
作者:  Kroebel, R.;  Campbell, C. A.;  Zentner, R. P.;  Lemke, R.;  Steppuhn, H.;  Desjardins, R. L.;  De Jong, R.
收藏  |  浏览/下载:14/0  |  提交时间:2019/11/29
Water use efficiency  precipitation use efficiency  fertilizer  spring wheat  summer fallow  
Effects of input management and crop diversity on non-renewable energy use efficiency of cropping systems in the Canadian Prairie 期刊论文
发表期刊: EUROPEAN JOURNAL OF AGRONOMY. 出版年: 2011, 卷号: 34, 期号: 2, 页码: 113-123
作者:  Zentner, R. P.;  Basnyat, P.;  Brandt, S. A.;  Thomas, A. G.;  Ulrich, D.;  Campbell, C. A.;  Nagy, C. N.;  Frick, B.;  Lemke, R.;  Malhi, S. S.;  Fernandez, M. R.
收藏  |  浏览/下载:15/0  |  提交时间:2019/11/29
Energy inputs  Energy output  Energy use efficiency  Cropping systems  Annual grains  Forage crops  
Effects of input management and crop diversity on economic returns and riskiness of cropping systems in the semi-arid Canadian Prairie 期刊论文
发表期刊: RENEWABLE AGRICULTURE AND FOOD SYSTEMS. 出版年: 2011, 卷号: 26, 期号: 3, 页码: 208-223
作者:  Zentner, R. P.;  Basnyat, P.;  Brandt, S. A.;  Thomas, A. G.;  Ulrich, D.;  Campbell, C. A.;  Nagy, C. N.;  Frick, B.;  Lemke, R.;  Malhi, S. S.;  Olfert, O. O.;  Fernandez, M. R.
收藏  |  浏览/下载:20/0  |  提交时间:2019/11/29
crop rotations  conservation tillage  organic farming  reduced input management  production costs  net returns  risk