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为9.0cm地径红枣根系吸水模型的建立提供关键参数。采用剖面挖掘和分层取样法,利用WinRHIZOPro2010a根系分析系统对漫灌条件下中龄期红枣(9.0cm地径)吸收根(根径<2.0mm)和输导根(根径≥2.0mm)的空间分布进行分析。研究表明,对于红枣根长密度分布,吸收根所占比重比输导根大,在水平方向上,吸收根的分布范围大概比输导根广25.0～50.0cm。在水平距离0～175.0cm范围内是根系分布的重要区域。在垂直方向上,输导根的分布范围大概比吸收根广10.0～20.0cm。在土层深度0～120.0cm范围内是根系分布的重要区域。距离树干0～175.0cm的0～120.0cm土层是9.0cm地径红枣田间水肥管理的重要区域。
It provides the key parameters for establishment of root absorption model of jujube with 9.0cm diameter. By using the method of root extraction and stratified sampling, WinRHIZOPro2010a root system was used to analyze the root absorption (root diameter <2.0mm) and the root diameter (root diameter≥2.0mm) of middle-aged jujube (9.0cm diameter) Distribution for analysis. The results showed that for the root length density distribution of jujube, the proportion of absorbed root was larger than that of the root. In the horizontal direction, the distribution range of absorbed root was about 25.0 ~ 50.0 cm wider than that of the root. In the horizontal distance of 0 ~ 175.0cm range of root distribution is an important area. In the vertical direction, the distribution of the guide root is probably wider than the absorbed root 10.0 ~ 20.0cm. In the soil depth of 0 ~ 120.0cm range is the root distribution of important areas. 0 ~ 120.0cm soil layer 0 ~ 175.0cm away from the trunk is an important area for water and fertilizer management of Jujube field with 9.0cm diameter.