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接种幼套球囊霉对干旱生境中构树幼苗根系形态的影响

, PP. 79-83

Keywords: 幼套球囊霉,构树,根系形态,幼苗,水分胁迫

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Abstract:

利用W inRh izo根系分析系统, 在石灰土基质上对不同土壤水分条件下接种丛枝菌根真菌幼套球囊霉对构树幼苗根系形态特征的影响进行了研究。结果表明: 土壤水分状况和接种丛枝菌根真菌对构树幼苗生物量积累产生了显著的影响; 构树幼苗根系干质量、总长度、表面积、体积、根节数目、根系平均直径均随着土壤含水量的降低而降低, 幼套球囊霉则降低了同等水分条件下构树幼苗的比根长; 土壤水分和接种幼套球囊霉同样也对根节平均长度产生了影响。

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