‘库尔勒香梨’根系分布特征研究Studies on characteristics of root distribution of ‘Korla's Xiangli’
李楠,廖康,成小龙,耿文娟,李永闲,宁万军,邱晨
摘要(Abstract)：
【目的】为探讨‘库尔勒香梨’的根系分布特征,【方法】以25 a生‘库尔勒香梨’为试材,采用挖掘剖面方块取根法,利用植物图像分析系统和烘干称重法,对不同土层的总根系生物量、细根(d<10 mm)生物量、吸收根(d<2 mm)根长密度与表面积进行了详细分析。【结果】结果表明,根系生物量、吸收根根长密度和表面积都表现为距树干水平分布递减,垂直分布分层的特点;最大总根和细根生物量分布在距离树干0～0.5 m,垂直0.6～0.7 m深度土层内;最大吸收根根长密度和表面积分布在距离树干0.5～1.0 m,垂直0.5～0.6 m深度土层内。【结论】距离树干0～2.5 m,深0～0.7 m深度的土层是‘库尔勒香梨’根系生物量和吸收根分布的主要区域,树冠下距树干约2.0～2.5 m,深0.4～0.7 m的土层应作为肥水管理的重点区域。
关键词(KeyWords)： 库尔勒香梨;根系;分布
基金项目(Foundation): 新疆维吾尔自治区科技计划项目—生态健康果园建设试点示范(2011-2012)
作者(Author): 李楠,廖康,成小龙,耿文娟,李永闲,宁万军,邱晨
DOI: 10.13925/j.cnki.gsxb.2012.06.019
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