Influence of the Relative Time of Emergence of Wild Oat (Avena fatua) on Yield Loss of Barley (Hordeum vulgare) and Wheat (Triticum aestivum)
Influence of the Relative Time of Emergence of Wild Oat (Avena fatua) on Yield Loss of Barley (Hordeum vulgare) and Wheat (Triticum aestivum)
复制标题
野燕麦(Avena fatua)相对出苗时间对大麦(Hordeum vulgare)和小麦(Triticum aestivum)产量损失的影响
DOI：
10.1017/s0043174500082722
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发表时间：
1985
期刊：
影响因子：
2.5
通讯作者：
Arvind K. Sharma
中科院分区：
文献类型：
--
作者：
J. O’Donovan;E. A. de St. Remy;P. A. O'sullivan;D. A. Dew;Arvind K. Sharma
对1972 ~ 1983年在阿尔伯塔两个地点进行的田间试验数据进行多元回归分析表明，大麦（Hordeum vulgare L.）和小麦（Triticum aestivum L.）野燕麦（Avena fatua L.）AVEFA）。在给定的野生燕麦密度下，野生燕麦出现的时间越早，产量损失率越高，出现的时间越晚，产量损失率逐渐降低。然而，这两个物种的产量损失的幅度随年份而变化。回归方程的基础上汇集多年来的数据和地点，提供了一个估计的产量损失的大麦和小麦由于野燕麦出现的相对时间和野燕麦密度。在评估野燕麦造成的大麦和小麦损失时，应考虑到这一信息。
Multiple regression analysis of data from field experiments conducted in Alberta at two locations between 1972 and 1983 indicated that there was a significant relationship between yield loss of barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.) and relative time of emergence of wild oat (Avena fatua L. ♯ AVEFA). At a given wild oat density, percent yield loss increased the earlier wild oat emerged relative to the crops and gradually diminished the later it emerged. However, the magnitude of the yield loss for both species varied with the year. Regression equations based on data pooled over years and locations were developed to provide an estimate of yield loss of barley and wheat due to relative time of wild oat emergence and wild oat density. The information should be considered when barley and wheat losses due to wild oat are being assessed.