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首页> 外文期刊>Journal of Arboriculture >Irrigation effects on the growth of newly planted oaks (Quercus spp.).
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Irrigation effects on the growth of newly planted oaks (Quercus spp.).

机译：灌溉对新种植的橡树生长的影响（栎属）。

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摘要

The effect of irrigation on the growth of container-grown oaks was investigated over a 4-year period. Quercus lobata, Q. agrifolia, and Q. douglasii were irrigated at three levels of reference evapotranspiration (0, 0.25, and 0.5 ET0) after being established for 1 year at the University of California Bay Area Research and Extension Center in Santa Clara, California, U.S. Although no significant differences were found in trunk diameter growth for irrigation treatments after 4 years, growth of Q. agrifolia was significantly greater than Q. lobata and Q. douglasii. Root mass, shoot mass, and root distribution were measured for Q. agrifolia, and mean shoot:root ratio was found to be 2.6 to 1. Many roots of Q. agrifolia were found to develop with a stronger vertical than horizontal orientation, and root distribution was not significantly affected by irrigation treatments.
机译：在四年的时间里，研究了灌溉对容器生橡木生长的影响。在加利福尼亚大学圣塔克拉拉分校的加利福尼亚大学湾区研究和扩展中心成立一年后，分别以三种参考蒸散量（0、0.25和0.5 ET0）灌溉阔叶栎，农杆菌和道格拉斯Q。美国，尽管4年后灌溉处理的树干直径增长没有发现显着差异，但农杆菌Q.的生长显着大于球叶Q.和道格拉斯Q.。测定了农杆菌的根质量，枝条质量和根系分布，平均枝与根之比为2.6：1。发现农杆菌的许多根在垂直方向上均比在水平方向上发育强，并且根灌溉处理对分布没有明显影响。

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