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首页> 外文期刊>Journal of Plant Nutrition >Influence of AM fungi, inorganic phosphorus and irrigation regimes on plant water relations and soil physical properties in okra (Abelmoschus esculentus L.) - pea (Pisum sativum L.) cropping system in Himalayan acid alfisol
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Influence of AM fungi, inorganic phosphorus and irrigation regimes on plant water relations and soil physical properties in okra (Abelmoschus esculentus L.) - pea (Pisum sativum L.) cropping system in Himalayan acid alfisol

机译：AM真菌，无机磷和灌溉制度对秋葵（Albelmoschus esculentus L.）-豌豆（Pisum sativum L.）种植系统中水分关系和土壤物理特性的影响

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Present investigation studied plant water relations and soil physical properties through AM fungi (Glomus mosseae) to mitigate drought stress in Himalayan acid Alfisol having low water retentivity. Experimentation was carried out at Palampur, India during 2009-2011 in okra-pea cropping system in randomized block design (RBD) replicated thrice with 14 treatments comprising arbuscular mycorrhizal (AM) fungi, varying phosphorus nutrition and irrigation regimes at 40 and 80% available water holding capacity. Integrated use of AM fungi at varying phosphorus (P) levels and irrigation regimes led to significantly higher relative leaf water content (3% each) in okra and pea besides significantly higher xylem water potential (27%) in pea over non-AM fungi counterparts. AM fungi enhanced water-use-efficiency in okra (5-17%) and pea (12-35%) over non-AM fungi counterparts. AM fungi also improved water holding capacity (5-6%) and mean weight diameter of soil particles (4-9%) over non-AM fungi counterparts; but, had nominal or no effect on bulk density. Mycorrhizal plants maintained higher tissue water content imparting greater drought resistance to plants over non-mycorrhizal plants at moisture stress. It is inferred that integrated application of AM fungi and P at varying irrigation regimes improved the plant water relations vis-a-vis drought resistance, crop productivity, WUE, soil aggregation and water holding capacity in okra-pea sequence in Himalayan acid Alfisol.
机译：目前的研究是通过AM真菌（Glomus mosseae）研究植物的水分关系和土壤物理特性，以减轻保水力低的喜马拉雅酸铁水的干旱胁迫。 2009年至2011年在印度Palampur的秋葵-豌豆种植系统中进行了三次随机区组设计（RBD）复制实验，共进行了14次处理，其中包括丛枝菌根（AM）真菌，不同的磷营养和灌溉制度，分别有40％和80％可用持水量。在不同的磷（P）水平和灌溉制度下综合使用AM真菌导致秋葵和豌豆的相对叶片含水量（各占3％）显着高于非AM真菌对应的豌豆木质部水势（27％） 。与非AM真菌相比，AM真菌提高了秋葵（5-17％）和豌豆（12-35％）的水分利用效率。与非AM真菌相比，AM真菌还提高了持水量（5-6％）和土壤颗粒的平均重量直径（4-9％）;但是，对体积密度没有或没有影响。菌根植物在水分胁迫下保持较高的组织水分含量，从而赋予植物比非菌根植物更高的抗旱性。可以看出，在不同的灌溉方式下，AM真菌和P的综合应用改善了喜马拉雅酸Alfisol中秋葵-豌豆序列抗旱性，作物生产力，WUE，土壤聚集和持水能力。

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