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共检索到26条 ,权限内显示50条;
Soil, Nutrient, and Water Management Systems Used in U.S. Corn Production
- 关键词：
- ARMS soil management nutrient management irrigation systems profitability socioeconomic variables
- 年份：
- 2002
- 摘要：
- Corn production uses over 25 percent of the Nation's cropland and more ...
Confined Animal Production and Manure Nutrients
- 关键词：
- Manure nutrients manure nutrients animal waste confined livestock confined animal feeding operation CAFO feedlot beef dairy cows swine
- 年份：
- 2001
- 摘要：
- Census of agriculture data were used to estimate manure nutrient production and ...
Moving Toward the Food Guide Pyramid: Implications for U.S. Agriculture
- 关键词：
- Food food consumption Food Guide Pyramid crop production commodity prices trade dietary recommendations 1996 Farm Act
- 年份：
- 1999
- 摘要：
- in U.S. agricultural production, trade, nonfood uses, and prices. The net adjus ...
Voluntary Incentives for Reducing Agricultural Nonpoint Source Water Pollution
- 关键词：
- water quality agricultural chemicals ground water surface water Clean Water Act Water Quality Incentive Program nonpoint source water pollution
- 年份：
- 1995
- 摘要：
- Agricultural chemicals and sediment from cropland may reduce the qualit ...
Market-Oriented Agriculture: The Declining Role of Government Commodity Programs in Agricultural Production Decisions
- 关键词：
- Market orientation commodity programs production incentives income support supply response corn wheat rice upland cotton
- 年份：
- 1993
- 摘要：
- (aggregate) levels has declined. As a result, the share of US. cropland...
Water Quality Benefits From the Conservation Reserve Program
- 关键词：
- Agricultural economics environmental services benefits nonpoint-source pollution nutrients sediment soil erosion soil conservation water quality
- 年份：
- 1989
- 摘要：
- The Conservation Reserve Program, a land retirement program designed to remove f ...
