木麻黄碎瘤、根际土壤和叶堆肥对木麻黄和木麻黄耐盐性的影响。

M. Ngom, Pape Ibrahima Djighaly, N. Diagne, M. Ndour, Ganna Ndong, D. Ngom, Mariama Ngom, S. Ngom, Sergio Svistoonoff
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引用次数: 2

摘要

土壤盐碱化是土地退化的主要原因之一。在塞内加尔,这种现象继续加剧,使土壤不适合农业。为了恢复盐碱地,建议的策略之一是使用耐盐植物。其中木麻黄科植物与丛枝菌根真菌、固氮菌等共生微生物形成关系。研究表明,共生微生物在盐碱条件下建立耐受植物方面发挥着重要作用(Djigaly等人,2018)。在盐胁迫条件下,它们可以提高植物性能并减少移植冲击(Diagne等人,2014)。这些微生物可以用作生物肥料。然而,在许多发展中国家,含有共生微生物的接种物要么过于昂贵,要么无法获得。本研究的目的是测试另一种价格合理、技术含量低的解决方案,以促进共生相互作用,如木麻黄碎结核、木麻黄根际土壤和木麻黄叶堆肥,这些堆肥可能含有共生微生物以及氮和磷等营养素。两种木麻黄(木麻黄和木麻黄)在温室中的无菌土壤上生长,并添加了改良剂(木麻黄碎结节、木麻黄根际土壤或木麻黄叶堆肥)。植物受到盐水胁迫。经过四个月的培养,收获它们并测定形态和生理参数。结果表明,在盐胁迫条件下,用木麻黄碎瘤、木麻黄根际土壤和木麻黄叶堆肥接种,可提高木麻黄和大叶木麻黄的生长、总干生物量、总叶绿素和脯氨酸含量。这些积极作用在用木麻黄叶堆肥改良的C.obesa植物中更为重要。本研究表明,木麻黄叶堆肥可以通过改善木麻黄树在盐碱条件下的表现,在盐碱地的恢复中发挥重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Casuarina Crushed Nodules, Rhizospheric Soil and Leaves Compost on Salt Tolerance of Casuarina equisetifolia L. and Casuarina obesa Miq.
Soil salinization is one of the major causes of land degradation. In Senegal, this phenomenon continues to grow, making soils unsuitable for agriculture. To rehabilitate salty lands, one of the recommended strategies is the use of salt-tolerant plants. Among them, plants of Casuarinaceae family form a relationship with symbiotic microorganisms such as arbuscular mycorrhizal fungi and nitrogen fixing bacteria. It has been shown that symbiotic microorganisms play an important role in the establishment of tolerant plants in saline conditions (Djighaly et al., 2018). They improve plant performance and reduce transplant shock under salt stress conditions (Diagne et al., 2014). These microorganisms can be used as biofertilizers. However, inocula containing symbiotic microorganisms are either too expensive or unavailable in many developing countries. The aim of this study is to test alternatively affordable and low-tech solutions to promote symbiotic interactions such as Casuarina crushed nodule, Casuarina rhizosphere soil and Casuarina leaves compost that may contain symbiotic microorganisms and also nutrients such as N and phosphorus. Two species of Casuarina (Casuarina equisetifolia L. and Casuarina obesa Miq.) were grown in the greenhouse on sterile soil to which an amendment was added (Casuarina crushed nodules, Casuarina Rhizospheric soil or Casuarina leaves compost). Plants were subjected to saline stress. After four months of cultivation, they were harvested and morphological and physiological parameters were determined. Results showed that inoculation with Casuarina crushed nodules, Casuarina rhizospheric soil and Casuarina leaves compost improved growth, total dry biomass, total chlorophyll and proline contents of C. equisetifolia and C. obesa plants in salt stress condition. These positive effects were more important in C. obesa plants amended with Casuarina leaves compost. This study shows that Casuarina leaves compost can play an important role in the rehabilitation of saline soils by improving Casuarina trees performance in saline conditions.
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