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英文文献：Economic Analysis of Tillage and Nutrient Best Management Practices in the Ouachita River Basin, Louisiana-路易斯安那州沃希塔河流域耕作和养分最佳管理措施的经济分析
英文文献作者：Matekole, Augustus N.,Westra, John V.
英文文献摘要：
The Ouachita River Basin (ORB) in northeastern Louisiana accounts for almost 50 percent of the state’s agricultural production. In the Cabin-Teele Sub-watershed, within the ORB, the alkaline soils are naturally low in organic matter and deficient in nitrogen so that producers occasionally over apply nitrogen fertilizer. Moreover, because the soils are poorly drained there are drainage ditches throughout the fields and along field borders. The abundance of ditches enhances the outflow of nutrients and sediments into adjacent waterbodies. This study evaluated and compared the cost effectiveness of tillage and nutrient management practices at addressing specific sediment and nutrient criteria reductions; nitrogen, phosphorus and sediment reductions individually, and concurrently (reducing all three simultaneously) in Cabin-Teele Sub-watershed. Simulated results showed that reduced tillage, nitrogen management, and somewhat conservation tillage, were cost-effective in helping reduce nutrient and sediment losses in Cabin-Teele subwatershed despite the prevalence of poorly drained soils.
位于路易斯安那州东北部的沃希塔河流域(ORB)的农业产量占该州农业产量的近50%。在Cabin-Teele亚流域，在ORB内部，碱性土壤的有机质含量低，缺乏氮，所以生产者偶尔会过度施用氮肥。此外，由于土壤排水不良，整个农田和农田边缘都有排水沟。大量的沟渠促进了营养物和沉积物流向邻近的水体。这项研究评估和比较了在处理特定沉积物和减少营养标准方面的耕作和养分管理措施的成本效益;在Cabin-Teele亚流域，氮、磷和沉积物分别减少，同时减少(三者同时减少)。模拟结果表明，减少耕作、氮肥管理和保护性耕作在帮助减少卡宾-提勒亚流域的养分和泥沙损失方面是具有成本效益的，尽管土壤排水不良的现象普遍存在。
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