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OALib Journal期刊
ISSN: 2333-9721
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生根粉对梭梭苗木根系生长及成活的影响
DOI: 10.3724/SP.J.1145.2012.00610, PP. 610-616
Keywords: 梭梭幼苗,成活率,细根动态,根系形态,生根粉
Abstract:
在自然条件下，采用随机区组设计研究了生根粉（abt3号）4个处理（25、50、100、200mgl-1）对人工种植的梭梭幼苗细根动态、年生长终期根系形态特征以及成活率的影响.结果表明：1）梭梭幼苗一年中细根生长有2次高峰，峰值分别出现在6月和9~10月.经生根粉处理后，梭梭幼苗细根的生长动态与对照基本一致，但在具体月份生根粉明显增加了细根总长度、细根生长速率和细根数量密度.2）abt3号生根粉可以使梭梭幼苗的存活率达到50%以上，显著高于对照的34.75%，相关分析表明生根粉提高梭梭幼苗成活率是通过增加根系生长来实现的.3）由主成分分析可知，50mgl-1的生根粉处理作用效果最理想.因此，建议在梭梭种植过程中可使用50mgl-1的生根粉提高其成活率；在本地，肉苁蓉接种的最佳季节是6月.图2表3参31
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