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共检索到33条 ,权限内显示50条;
Reducing Nutrient Losses From Cropland in the Mississippi/Atchafalaya River Basin: Cost Efficiency and Regional Distribution
- 关键词：
- hypoxia targeting compliance Gulf of Mexico Mississippi/Atchafalaya River Basin conservation practices wetlands buffers nitrogen reduction phosphorus reduction
- 年份：
- 2018
- 摘要：
- of achieving a 45-percent reduction in cropland nutrient loads to the ...
Reducing Nutrient Losses From Cropland in the Mississippi\/Atchafalaya River Basin: Cost Efficiency and Regional Distribution
- 关键词：
- hypoxia targeting compliance Gulf of Mexico Mississippi\/Atchafalaya River Basin conservation practices wetlands buffers nitrogen reduction phosphorus reduction
- 年份：
- 2018
- 摘要：
- of achieving a 45-percent reduction in cropland nutrient loads to the ...
Brazil\u0027s Agricultural Land Use and Trade: Effects of Changes in Oil Prices and Ethanol Demand
- 关键词：
- cropland
- 年份：
- 2016
- 摘要：
- Because the supply and demand for ethanol are inexorably linked to that of petro ...
Agricultural Land Values
- 年份：
- 2016
- 摘要：
- real estate (farmland and buildings), cropland, and pastureland.
Nitrogen Management on U.S. Corn Acres, 2001-10
- 关键词：
- Corn nitrogen Agricultural Resource Management Survey nitrogen management conservation programs
- 年份：
- 2012
- 摘要：
- of biodiversity. Improved nitrogen management on cropland has been a l ...
Water Conservation in Irrigated Agriculture: Trends and Challenges in the Face of Emerging Demands
- 关键词：
- Agricultural water conservation irrigated agriculture irrigation efficiency water supply and demand irrigation technologies water management practices water conservation policy
- 年份：
- 2012
- 摘要：
- States that account for nearly three-quarters of U.S. irrigated agriculture. De ...
The Ethanol Decade: An Expansion of U.S. Corn Production, 2000-09
- 关键词：
- Corn soybeans ethanol yields Agricultural Resource Management Survey ARMS acreage bioenergy ethanol indirect effects
- 年份：
- 2011
- 摘要：
- uncultivated hay to cropland, and the expansion of double cropping (co ...
Trends and Developments in Hog Manure Management: 1998-2009
- 年份：
- 2011
- 摘要：
- ller areas. With less cropland for spreading the manure, hog farmers ma ...
Major Uses of Land in the United States, 2007
- 关键词：
- Land use land-use change agricultural land nonagricultural land cropland forest-use land forestland pasture rangeland rural residential land
- 年份：
- 2011
- 摘要：
- ); grassland pasture and rangeland at 614 million (27 percent); cropland...
Nitrogen in Agricultural Systems: Implications for Conservation Policy
- 关键词：
- Reactive nitrogen nitrogen management fertilizer water quality greenhouse gas economic incentives conservation policy regulation
- 年份：
- 2011
- 摘要：
- nitrogen management and identifies issues affecting their potential performance ...
