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共检索到14条 ,权限内显示50条;
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：
- Nitrogen is a critical input in agriculture, enabling farmers to produce high
...
Measuring the Indirect Land-Use Change Associated With Increased Biofuel Feedstock Production: A Review of Modeling Efforts: Report to Congress
- 关键词：
- Renewable fuels feedstocks biofuel climate change land use economic model agricultural economics
- 年份：
- 2011
- 摘要：
- of agricultural land in the United States. If crop yield per acre incr ...
The Seed Industry in U.S. Agriculture: An Exploration of Data and Information on Crop Seed Markets, Regulation, Industry Structure, and Research and Development
- 年份：
- 2004
- 摘要：
- Unprecedented growth in crop yields and agricultural total factor produ ...
Adoption of Agricultural Production Practices: Lessons Learned from the U.S. Department of Agriculture Area Studies Project
- 年份：
- 2001
- 摘要：
- management practices affects chemical use and crop yields.
