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首页> 外文会议>American Water Resources Association's Annual Water Resources Conference, Nov 6-9, 2000, Miami, Florida >Water Quality Impacts of Agricultural Variable Rate Technology in Mississippi
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Water Quality Impacts of Agricultural Variable Rate Technology in Mississippi

机译：密西西比州农业可变速率技术对水质的影响

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Environmental non-point pollution (NPP) problems associated with agricultural practices are considered to be the largest contributor to surface water quality degradation. A number of management practices including precision agriculture, especially agricultural variable rate technology (VRT), are being employed in an attempt to cope with NPP problems. In our study, the impact of VRT on water quality in Mississippi is examined. To assess water quality impacts, the Erosion Productivity Impact Calculator (EPIC) is used. Results indicate a reduction in all environmental parameters (nitrogen and phosphorus runoff) for cotton, while profits per acre increase. For soybeans, there is no change in phosphorus loss, while nitrogen runoff and profits per acre increase. In the case of corn, we see a reduction in nitrogen runoff and phosphorus loss in sediment, while profits per acre increase.
机译：与农业实践相关的环境面源污染（NPP）问题被认为是造成地表水质量下降的最大因素。为了应对NPP问题，正在采用许多管理措施，包括精准农业，尤其是农业可变利率技术（VRT）。在我们的研究中，研究了VRT对密西西比州水质的影响。为了评估水质影响，使用了侵蚀生产力影响计算器（EPIC）。结果表明，棉花的所有环境参数（氮和磷流失）均减少，而每英亩的利润增加。对于大豆来说，磷的损失没有变化，而氮的径流和每英亩的利润却增加了。以玉米为例，我们看到氮的径流减少，沉积物中的磷损失减少，而每英亩的利润增加。

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