Jin-Hua Shi, Xin-Jun Hu, Zi-Xuan Zeng, Ze Sun, Chao Wang, Hazem Abdelnabby, Huanan Jin, Man-Qun Wang
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蚯蚓通过加强土壤微生物群落之间的联系促进作物生长
蚯蚓有利于植物生长,并在塑造土壤微生物群落方面发挥着重要作用。然而,蚯蚓如何改变土壤微生物并进而影响植物生长仍不清楚。虽然肥料会改变微生物群落的组成,但仍需进一步研究肥料类型对蚯蚓、土壤微生物群落和植物之间关系的影响。我们在田间和温室实验中评估了有机肥和化肥条件下蚯蚓在土壤微生物和玉米植物生长特性中的作用。我们探讨了不同肥料类型下蚯蚓、土壤微生物群落和植物生长之间的关系。我们发现,蚯蚓的存在促进了植物的生长,增加了植物根部渗出物的数量,增强了根圈细菌、真菌和原生生物群落之间的联系。蚯蚓和施肥都极大地改变了土壤细菌、真菌和原生生物群落的结构。与施用化肥相比,施用有机肥的土壤微生物群落网络的复杂性有所增加。温室实验表明,玉米植株在施用有机肥或化肥的灭菌土壤中生长时,蚯蚓对植物生长的影响减弱。综述与应用:我们的研究提供了确凿的证据,证明在施用不同肥料的条件下,蚯蚓对植物的影响主要依赖于土壤微生物。这可能为通过加强蚯蚓和土壤微生物的作用来减少化肥用量提供了新的见解。
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