高效双接种田菁修复黄河三角洲盐碱土壤研究

发布时间：2018-03-16 18:31

本文选题：根瘤菌　切入点：丛枝菌根真菌　出处：《海洋科学》2017年05期 　论文类型：期刊论文

【摘要】：为了治理黄河三角洲土地盐碱化问题,在山东省东营市垦利县永安镇(37.56°N,118.74°E)选取一块面积为70 m2的土地作为试验地,进行根瘤菌和丛枝菌根真菌接种田菁(Sesbania cannabina)进行降盐试验。试验设置3个处理,分别为对照组(不种植田菁)、不接种组、双接种组(根瘤菌和丛枝菌根真菌接种田菁)。监测高效根瘤菌和丛枝菌根真菌接种田菁对田菁降盐效果及对土壤营养元素的影响。结果显示,田菁质量和叶绿素含量等长势指标,双接种组不接种组对照组,双接种组田菁植株的地上部干物质质量比不接种组增加了26.12%,地下部干物质质量增加了46.15%。不接种组田菁使土壤含盐量控制在0.9~2.0,与对照组相比土壤含盐量降低了67%~79%。与不接种组田菁相比,双接种处理土壤含盐量降低了20%~25%。此外,双接种组土壤中速效氮、磷、钾含量比不接种组土壤明显增加。综上,接种高效田菁根瘤菌和丛枝菌根真菌能有效提高田菁的降盐和肥田能力,为治理黄河三角洲土地盐碱化问题提供技术参考。
[Abstract]:In order to control the salinization of land in the Yellow River Delta, a plot of land with an area of 70 m2 was selected as experimental land in Yongan Town, Kenli County, Dongying City, Shandong Province. The salt-reducing experiment was carried out by inoculating Rhizobium root nodule and arbuscular mycorrhizal fungi Sesbania cannabina.Three treatments were set up as control group (no Sesbania sabinia, no inoculation group, no inoculation group). Double inoculation groups (Rhizobium and arbuscular mycorrhizal fungi inoculated with Sesbania Sesbania. The effect of inoculation of high efficient rhizobia and arbuscular mycorrhizal fungi on the desalination of Sesbania and the nutrient elements in soil were monitored. The growth indexes such as quality and chlorophyll content of Sesbania were not inoculated in double inoculation group and control group. The aboveground dry matter and underground dry matter in the double inoculation group were 26.12 and 46.15, respectively. The salt content in the soil was controlled at 0.9 ~ 2.0 in the non-inoculated group, and the salt content in the soil was decreased by 67% and 79% in comparison with the control group. No inoculation group compared with Sesbania, In addition, the contents of available nitrogen, phosphorus and potassium in double-inoculated soil were significantly higher than those in non-inoculated soil. Inoculation of highly efficient Sesbania rhizobia and arbuscular mycorrhizal fungi can effectively improve the salinization and fertility of Sesbania, and provide a technical reference for the treatment of salinization of land in the Yellow River Delta.
【作者单位】：中国科学院烟台海岸带研究所海岸带生物学与生物资源利用重点实验室;山东省农业科学院盐生植物与生态农业研究所;
【基金】：国家自然科学基金项目(31601238,31570063) 中国科学院重点部署项目(KZZD-EW-14) 烟台市重点研发计划项目(2016ZH074) 烟台市科技发展计划项目(2013JH021)~~
【分类号】：S156.4

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