针对内蒙古东部井工煤矿区气候干旱、土壤贫瘠等问题，以玉米为供试材料，采用盆栽试验方法，研究干旱胁迫(供试土壤最大持水量的40%)和正常供水(供试土壤最大持水量的70%)条件下接种解磷细菌与丛枝菌根(AM)真菌对玉米生物量、养分含量和根际土壤化学性状的影响。结果表明:在正常供水和干旱胁迫条件下，单接种AM真菌(AM)、单接种解磷细菌(CA)和联合接种AM真菌与解磷细菌(AM+CA)对玉米生物量、养分吸收量和土壤肥力均具有一定促进作用。正常供水条件下，联合接种AM真菌与解磷细菌对玉米生长促进效果最佳，与对照相比，玉米地上生物量、根系生物量和总生物量分别提高了55.5%,25.6%,49%，植株氮、磷、钾吸收量分别显著提高了71%,83%,50%;联合接种处理对根际土壤速效磷含量、磷酸酶活性改善效果最好，较对照分别提高92.3%,5.3%，而单接AM真菌对根际土壤pH、电导率、有机质、全氮、速效钾改良效果最优。干旱胁迫下，单接AM真菌对玉米生长促进效果最佳，与对照相比，显著提高玉米生物量51%，植株氮、磷、钾吸收量分别提高60%,111%,86%，同时对土壤pH、电导率、全氮、速效磷改良效果最佳。AM真菌与解磷细菌协同作用可有效促进植物生长与土壤改良，从而加速矿区植被恢复和生态重建过程，为微生物应用于矿区复垦提供了科学依据。

To resolve the issue of water and soil nutrient deficiency in the eastern Inner Mongolia coal mining area,a pot experiment was carried out to investigate the effects of single inoculation with arbuscular mycorrhizal (AM) fungi (Funneliformis mosseae),single inoculation with phosphate-solubilizing bacteria (Pantoea stewartii) and dual-inocula- tion with AM fungi and phosphate-solubilizing bacteria on maize biomass and N,P,K uptake,and rhizosphere soil chemical properties under normal water condition (70% of the soil water holding capacity) and water stress(70% of the soil water holding capacity). The results showed that the treatment of AM fungi or phosphate-solubilizing bacteria inoculation had some promotion effects on maize biomass and its N,P,K uptake,and soil chemical fertility under nor- mal water condition and water stress. Under normal water condition,dual-inoculation with AM fungi and phosphate-solubilizing bacteria was the best way to increase maize dry matter. Compared with the control ( CK),dual-inoculation with AM fungi and phosphate-solubilizing bacteria increased plant above-ground biomass,root biomass and total bio- mass by 55. 5% ,25. 6% and 49. 0% ,and promoted plant N,P and K uptake by 71% ,83% and 50% ,respectively. Dual-inoculation with AM fungi and phosphate-solubilizing bacteria increased the soil available P content and phos- phatase activity by 92. 3% and 5. 3% ,respectively,while single inoculation with AM fungi was the best way to im- prove soil pH and conductivity,and increase soil organic matter,total nitrogen and available K content. Under water stress,single inoculation with AM fungi increased the maize dry matter,improved soil pH and conductivity,and in- creased soil total nitrogen and available P content compared with the other three treatments,which significantly in- creased maize biomass by 51% and plant N,P and K uptake by 60% ,111% and 86% ,respectively. Therefore,the synergy between AM fungi and phos-phate-solubilizing bacteria can promote plant growth and soil fertility,thus accel- erating the process of vegetation restoration and ecological reconstruction,and it provides a scientific reference for the application of microbial reclamation in the mining area.