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首页> 外文期刊>Ecological research >Castor bean growth and rhizosphere soil property response to different proportions of arbuscular mycorrhizal and phosphate-solubilizing fungi
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Castor bean growth and rhizosphere soil property response to different proportions of arbuscular mycorrhizal and phosphate-solubilizing fungi

机译：蓖麻子生长和根际土壤性质对不同比例丛枝菌根和增磷真菌的响应

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摘要

A pot culture experiment was performed to study the effects of infection with different proportions of arbuscular mycorrhizal fungus (AMF) and phosphate-solubilizing fungus (PSF) on the rhizosphere soil property of castor bean (Ricinus communis L.). One AMF, Glomus mosseae, and one PSF, Mortierella sp. (Ms), were applied to non-sterilized coastal saline soil. The plant dry mass, leaf chlorophyll content, and P-uptake of castor bean were assessed. In coastal saline soil, the different proportions of both fungi-inoculated seedlings showed significantly greater shoot and root dry weight than the controls, which had lower root-to-shoot ratios than the inoculated seedlings. An increase in phosphorus (P) and chlorophyll contents was also observed in the inoculated seedlings compared with the controls. The appropriate Ms proportion seemed to be advantageous for AMF colonization. However, available P content of fungi-treated soil increased in proportion to the increase in Ms population and AMF colonization. By contrast, the pH of inoculated soil de- creased because of the increased proportion of Mortierella, and electrical conductivity values showed a negative correlation with AMF colonization. Soil enzyme activities (i.e., urease, invertase, neutral phospha-tase, and alkaline phosphatase) and soil organic matter were also stimulated by inoculation with different proportions of both fungi. However, the catalase activities of inoculated soil were inhibited compared with those of the control soil. Results from this study prove that castor bean planting associated with an appropriate proportion of AMF and PSF will benefit the amelioration of coastal saline soils of eastern China.
机译：通过盆栽试验研究了不同比例的丛枝菌根真菌（AMF）和增溶磷真菌（PSF）对蓖麻（Ricinus communis L.）根际土壤特性的影响。一种AMF，Glomus mosseae，另一种PSF，Mortierella sp。 （Ms），应用于未灭菌的沿海盐渍土壤。评估了蓖麻的植物干重，叶片叶绿素含量和磷吸收。在沿海盐渍土壤中，两种真菌接种的幼苗的不同比例均显示出比对照高得多的芽和根干重，而根与茎比则低于接种的幼苗。与对照相比，在接种的幼苗中还观察到磷（P）和叶绿素含量的增加。合适的Ms比例似乎对于AMF定植是有利的。但是，真菌处理过的土壤中有效磷含量与Ms种群和AMF定殖的增加成比例增加。相比之下，接种的土壤的pH值由于Mortierella的比例增加而降低，并且电导率值与AMF定殖呈负相关。接种不同比例的两种真菌也能刺激土壤酶活性（即脲酶，转化酶，中性磷酸酶和碱性磷酸酶）和土壤有机质。然而，与对照土壤相比，接种土壤的过氧化氢酶活性受到抑制。这项研究的结果证明，与适当比例的AMF和PSF结合使用的蓖麻籽种植将有利于改善中国东部沿海盐渍土壤。

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