切萨皮克湾下游的 LTAR 耕地共同试验。

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
G. A. Bagley, V. J. Ackroyd, M. A. Cavigelli, K. E. White, H. H. Schomberg, E. P. Law, K. Bejleri, W. D. Hively, M. H. H. Fischel, J. E. Maul, C. J. Hapeman, G. W. McCarty, W. Dulaney, D. J. Timlin, S. B. Mirsky
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引用次数: 0

摘要

切萨皮克湾下游 (LCB) 长期农业生态系统研究 (LTAR) 共同试验 (CE) 位于马里兰州贝尔茨维尔,重点研究与该地区主要农作物生产者有关的问题,这些农作物包括玉米 (Zea mays L.)、大豆 [Glycine max (L.) Merr.]、小麦 (Triticum aestivum L.) 以及各种牧草。该地区的畜牧业生产包括肉鸡和蛋鸡(Gallus gallus domesticus L.)以及奶牛和肉牛(Bos taurus L.)。LCB 地区是美国人口最稠密的地区之一。城市发展对农场和自然区域的压力都很大。恢复切萨皮克湾水质的需要对该地区的农业实践产生了重大影响。与全国相比,该地区的保护性耕作(如覆盖种植、免耕农业和养分管理规划)更为普遍。但是,农民在实施解决水质问题的措施时仍然面临管理挑战,而且抗除草剂杂草也在增加。LCB 基地的研究人员认识到保护切萨皮克湾和特拉华湾并保持农民收益的必要性。LCB CE 比较了以替代作物管理(覆盖作物强化、轮作多样化和综合杂草管理 [IWM])为特色的 3 年轮作系统和普遍采用的 2 年轮作系统(无覆盖作物和无综合杂草管理),两者均采用连续免耕方式,以确定促进区域耕作系统可持续性的最佳平衡。LTAR LCB 网站提供数据驱动的工具和解决方案,为大西洋中部地区的农民提供支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The LTAR Cropland Common Experiment at Lower Chesapeake Bay

The Lower Chesapeake Bay (LCB) Long-Term Agroecosystem Research (LTAR) Common Experiment (CE) located in Beltsville, MD, focuses on research of concern to producers of the major regional crops, which are corn (Zea mays L.), soybean [Glycine max (L.) Merr.], wheat (Triticum aestivum L.), and various forage species. Livestock production in the region includes broiler and laying chickens (Gallus gallus domesticus L.) and dairy and beef cattle (Bos taurus L.). The LCB region is among the most heavily populated in the United States. Urban development pressure is high for both farms and natural areas. The need to restore Chesapeake Bay water quality is a major influence on regional agricultural practices. Conservation practices such as cover cropping, no-till agriculture, and nutrient management planning are more common in the region compared to nationally. However, farmers still face management challenges implementing practices that address water quality and the rise of herbicide-resistant weeds. Researchers at the LCB site recognize the need to protect the Chesapeake and Delaware Bays and maintain farmer profitability. The LCB CE compares a 3-year crop rotation system featuring alternative crop management (cover crop intensification, crop rotation diversification, and integrated weed management [IWM]) with a prevailing 2-year system (no cover crops and no IWM), both under continuous no-tillage, to identify the optimal balance to promote the sustainability of regional cropping systems. The LTAR LCB site provides data-driven tools and solutions to support farmers in the mid-Atlantic region.

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来源期刊
Journal of environmental quality
Journal of environmental quality 环境科学-环境科学
CiteScore
4.90
自引率
8.30%
发文量
123
审稿时长
3 months
期刊介绍: Articles in JEQ cover various aspects of anthropogenic impacts on the environment, including agricultural, terrestrial, atmospheric, and aquatic systems, with emphasis on the understanding of underlying processes. To be acceptable for consideration in JEQ, a manuscript must make a significant contribution to the advancement of knowledge or toward a better understanding of existing concepts. The study should define principles of broad applicability, be related to problems over a sizable geographic area, or be of potential interest to a representative number of scientists. Emphasis is given to the understanding of underlying processes rather than to monitoring. Contributions are accepted from all disciplines for consideration by the editorial board. Manuscripts may be volunteered, invited, or coordinated as a special section or symposium.
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