The Impact of Drainage Water Management Technology on Corn Yields
The Impact of Drainage Water Management Technology on Corn Yields
复制标题
排水管理技术对玉米产量的影响
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
J. Lowenberg
中科院分区：
文献类型：
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作者：
Benoît A. Delbecq;Jason Brown;R. Florax;E. Kladivko;A. Nistor;J. Lowenberg
控制排水(排水水管理)在一年中不需要现场设备作业的时段限制外流。这可能会增加产量，并减少营养物质的损失，带来负面的环境外部性。采用控制排水技术对玉米(Zea Mays L.)在印第安纳州，产量是在田间水平进行评估的。具体来说，利用地理信息系统和空间面板回归方法对产量监测数据进行了跨空间和跨时间的分析。同时控制空间和时间异质性以及相关性的面板数据方法的使用为精准农业研究人员提供了一个强大的框架，可以跨空间和时间对作物传感器数据进行建模。在2005年至2009年期间，试验田的控制排水比自由流系统平均高出0.57-1.00mgha−1(在高于治水构筑物0-0.61m的有效范围内为5.8-9.8%)；然而，这些综合结果掩盖了很大的年际和场内差异。
Controlled drainage (drainage water management) restricts outflow during periods of the year when equipment operations are not required in the field. This may increase yields as well as reduce the loss of nutrients with negative environmental externalities. An experiment using controlled drainage was investigated and its impact on corn (Zea mays L.) yields was assessed at the field level in Indiana. Specifically, yield monitor data was analyzed across space and time using a geographic information system and spatial panel regression methods. The use of panel data methods controlling simultaneously for spatial and temporal heterogeneity as well as dependence provides precision agriculture researchers with a powerful framework to model crop sensor data across space and time. During the period 2005 to 2009, controlled drainage was found to outperform free-flow systems by an average of 0.57 to 1.00 Mg ha−1 (5.8–9.8% across the effective range of 0–0.61 m above the water control structure) for the experimental field; however, these aggregate results masked substantial year-to-year and within-field variations.