态学
发表于 2025-3-23 12:46:34
System Approaches for Sustainable Agricultural Developmenthttp://image.papertrans.cn/a/image/159585.jpg
法律的瑕疵
发表于 2025-3-23 16:28:14
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流动性
发表于 2025-3-23 19:51:21
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Expurgate
发表于 2025-3-24 01:38:59
978-94-010-6278-7Kluwer Academic Publishers 1997
fidelity
发表于 2025-3-24 04:50:53
https://doi.org/10.1007/978-1-4471-7468-4echnology for a farm cannot be determined by crop, soil and weather factors alone. Resource constraints cannot be determined at the field scale, and neither can risks to the economic or nutritional well-being of the household. Systems approaches at the farm scale must take account of biophysical cha
ostrish
发表于 2025-3-24 08:28:48
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故意
发表于 2025-3-24 13:15:30
Energy and Sustainable Developmentates and farm profitability from different land uses need to be optimized according to physical economic and social constraints, which differ for the interest groups in and outside a catchment. The Interdisciplinary Tool for Optimizing Productivity and Erosion (ITOPE), a conceptual model at this poi
happiness
发表于 2025-3-24 17:56:57
Understanding and Analysing Energy Demandlow. The economics of wheat production in a typical rice-wheat area of Nepal is examined using a linear programming model. In order to assess the effect of irrigation and marketing infrastructure on the economics of wheat production and elasticity of wheat supply, representative models for four loca
阴郁
发表于 2025-3-24 21:49:05
Economics of Non-Renewable Resource Supplymanagement practice is, however, low. This paper examines the long-term effects of mulching on soil fertility, the decreasing accessibility of fallow and, consequently, the reduction in the opportunity of restoring the soil fertility through a fallow using a multi-period dynamic linear programming m
miniature
发表于 2025-3-25 00:09:23
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