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首页> 外文期刊>Landbauforschung >Single and combined applications of arbuscular mycorrhizal fungi and Enterobacter radicincitans affect nutrient uptake of faba bean and soil biological characteristics.
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Single and combined applications of arbuscular mycorrhizal fungi and Enterobacter radicincitans affect nutrient uptake of faba bean and soil biological characteristics.

机译:丛枝菌根真菌和辐射肠杆菌的单次或组合施用会影响蚕豆的养分吸收和土壤生物学特性。

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摘要

Microorganisms like arbuscular mycorrhizal fungi (AMF) and plant growth-promiting rhizobacteria (PGPR) can contribute significantly to plant nutrition and thus may help to reduce chemical inputs in agricultural systems. In two pot experiments under semi-controlled conditions the effects of applications with AMF and an Enterobacter radicincitans strain were evaluated regarding shoot yield and nutrient uptake (P and N) of faba bean (Vicia faba) as well as on soil characteristics (basal respiration, microbial biomass, and the number of P solubilizing bacteria). The first experiment (2007) was established to investigate the single and combined effects of AMF and E. radicincitans. The second experiment (2008) was established on a nutrient poor soil to evaluate the efficacy of PGPR and AMF with or without mineral fertilizer (P, K and Mg) application. For the experiment with suboptimal soil nutrient contents (2008) higher nutrient uptakes of bean was found after application of AMF in comparison to the control. The effect of AMF was comparable to the positive effect of mineral nutrient application. Under better nutrient status of soil (experiment 2007) none of the applied microorganisms affected the growth and nutrient uptake of bean. However, AMF application alone or with mineral nutrient supply increased the soil respiration and soil microbial biomass. The studies showed the potential of AMF applications for plant growth and nutrition mainly under nutrient deficient conditions.
机译:微生物如丛枝菌根真菌(AMF)和植物允许根瘤菌(PGPR)可以显着促进植物营养,因此可以帮助减少农业系统中的化学物质投入。在半控制条件下进行的两个盆栽实验中,评估了AMF和Radicincitans肠杆菌的施用对蚕豆(Vicia faba)的芽收率和养分吸收(P和N)以及土壤特性(基础呼吸,微生物生物量,以及增溶磷的细菌的数量)。建立了第一个实验(2007年),以研究AMF和radicincitans的单一和联合作用。在营养不良的土壤上建立第二个实验(2008年),以评估使用或不使用矿物肥料(P,K和Mg)时PGPR和AMF的功效。对于土壤养分含量不理想的实验(2008年),与对照相比,施用AMF后发现豆类的养分吸收量更高。 AMF的作用可与矿物养分施用的正面作用相媲美。在土壤养分状况较好的情况下(实验2007),所有施用的微生物都不会影响豆类的生长和养分吸收。但是,单独施用AMF或与矿物质养分一起施用会增加土壤呼吸和土壤微生物生物量。研究表明,主要在营养缺乏的条件下,AMF在植物生长和营养方面的应用潜力。

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