内蒙古科技大学 能源与环境学院, 内蒙古 包头 014010
皇晓刚(1999—),男(汉族),内蒙古自治区呼和浩特市人,硕士研究生,研究方向为生态环境修复。Email:huangxg1213@163.com。
郑春丽(1979—),女(汉族),内蒙古自治区兴安盟人,博士,教授,主要从事矿区生态环境修复研究。Email:zhengchunli1979@163.com。
收稿:2025-01-07,
修回:2025-03-28,
纸质出版:2025-08-20
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皇晓刚, 陈敏洁, 郑春丽, 等.微生物菌剂对沙化土壤保水及促生长效应的影响[J].水土保持通报,2025,45(4):153-160.
Huang Xiaogang, Chen Minjie, Zheng Chunli, et al. Effects of microbial inoculants on soil water retention and promotion of plant growth efficiency in desertified soil [J]. Bulletin of Soil and Water Conservation,2025,45(4):153-160.
皇晓刚, 陈敏洁, 郑春丽, 等.微生物菌剂对沙化土壤保水及促生长效应的影响[J].水土保持通报,2025,45(4):153-160. DOI: 10.13961/j.cnki.stbctb.2025.04.012. CSTR: 32312.14.stbctb.2025.04.012..
Huang Xiaogang, Chen Minjie, Zheng Chunli, et al. Effects of microbial inoculants on soil water retention and promotion of plant growth efficiency in desertified soil [J]. Bulletin of Soil and Water Conservation,2025,45(4):153-160. DOI: 10.13961/j.cnki.stbctb.2025.04.012. CSTR: 32312.14.stbctb.2025.04.012..
目的
2
探究微生物菌剂对沙化土壤保水性能的改良作用及其植物促生效应的机制,为沙化土壤的水分保持能力提升和农业可持续发展提供参考。
方法
2
选取3种芽孢杆菌为试验材料,采用室内渗透蒸发试验与田间试验相结合,从土壤保水性能、团聚体组成、酶活性及植物生理等指标,综合评价不同微生物菌剂对沙化土壤的改良效果。
结果
2
与对照相比,3种菌剂和双菌剂处理分别使大团聚体(>0.25 mm)比例增加23.09%和32.51%;3种菌剂处理使有机碳含量增加2.96 g/kg,总氮、碱解氮、有效磷和速效钾含量分别增加21.54%,61.50%,312.16%和30.17%;不同菌剂对土壤酶活性的影响存在差异,3种菌剂处理显著提高过氧化物酶和蔗糖酶活性;3种菌剂处理显著促进植物生长,表现为株高、根长及地下生物量占比的显著增加,根冠比较对照高5.0%。
结论
2
芽孢杆菌菌剂可有效改良沙化土壤,通过改善土壤结构,降低水分蒸发量,提高养分含量等途径实现促生效果。其中,3种菌剂处理在植物促生方面表现出显著优于单菌剂处理的协同效应。
Objective
2
The effects of microbial inoculants on soil water-retention capacity and plant growth-promotion mechanism in desertified soil were explored in order to provide references for water-retention capacity improvement and sustainable agricultural development.
Methods
2
Three
Bacillus
spp. were used. By combinin
g indoor infiltration evaporation experiments with field experiments, the effects of different microbial inoculants on desertified soil were comprehensively evaluated using indicators such as soil water retention performance, aggregate composition, enzyme activity, and plant physiology.
Results
2
Compared with the control group, the triple and dual bacterial inoculant treatments increased the proportion of large aggregates (>0.25 mm) by 23.09% and 32.51%, respectively. The triple bacterial inoculant treatment increased the organic carbon content by 2.96 g/kg, and the total and alkali-hydrolyzed nitrogen, and available phosphorus and potassium contents by 21.54%, 61.50%, 312.16% and 30.17%, respectively. The effects of different bacterial inoculants on soil enzyme activity vary. The triple bacterial inoculant treatment significantly increased peroxidase and sucrase activity and significantly promoted plant growth, which manifested as a significant increase in plant height, root length, proportion of underground biomass, and the root cap increased by 5.0% compared with the control treatment.
Conclusion
2
Bacillus inoculants can effectively improve desertified soil and achieve growth-promotion effects by improving the soil structure, reducing water evaporation and increasing nutrient content. Among them, the triple bacterial inoculant treatment showed a significantly improved synergistic effect than a single bacterial inoculant treatment in promoting plant growth.
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