华北农学报 ›› 2024, Vol. 39 ›› Issue (3): 146-158. doi: 10.7668/hbnxb.20194778

所属专题: 土壤肥料

• 资源环境·植物保护 • 上一篇    下一篇

化肥减量配施有机肥对植烟土壤理化特性和微生物群落结构的影响

孙子隽1, 钟国兴1, 张少搏2, 杨欣3, 彭金良2, 郭维2, 梁耀星3, 李淮源4, 白云峰2, 陈建军4, 邓世媛1   

  1. 1 华南农业大学 烟草研究室,广东 广州 510642
    2 湖南省烟草公司衡阳市公司,湖南 衡阳 421000
    3 广东中烟工业有限责任公司,广东 广州 510610
    4 华南农业大学 基础实验与实践训练中心,广东 广州 510642
  • 收稿日期:2023-12-29 出版日期:2024-06-28
  • 通讯作者:
    邓世媛(1975—),女,湖北恩施人,副教授,博士,主要从事烟草栽培生理及品质优化调控研究。
  • 作者简介:

    孙子隽(2001—),男,云南普洱人,在读硕士,主要从事烟草栽培生理及品质优化调控研究。

  • 基金资助:
    广东省科技厅星火计划项目(2013B020503058); 湖南省烟草公司衡阳市公司科技项目(2021430422200010)

Effects of Fertilizer Reduction Combined with Organic Fertilizer on Physicochemical Properties and Microbial Community Structure of Tobacco-planting Soil

SUN Zijun1, ZHONG Guoxing1, ZHANG Shaobo2, YANG Xin3, PENG Jinliang2, GUO Wei2, LIANG Yaoxing3, LI Huaiyuan4, BAI Yunfeng2, CHEN Jianjun4, DENG Shiyuan1   

  1. 1 Tobacco Laboratory,South China Agricultural University,Guangzhou 510642,China
    2 Hengyang Tobacco Company of Hunan Province,Hengyang 421000,China
    3 China Tobacco Guangdong Industrial Co.,LTD.,Guangzhou 510610,China
    4 Center for Basic Experiment and Practice Training,South China Agricultural University,Guangzhou 510642,China
  • Received:2023-12-29 Published:2024-06-28

摘要:

探究化肥减量配施有机肥对植烟土壤理化性质和微生物群落结构的影响,为烟草生产上肥料减量和有机肥的合理施用提供理论参考。以常规施肥不配施有机肥为对照(CK),采用Illumina高通量测序技术,结合生物信息学,分析化肥减量10%(T1)、化肥减量10%+芝麻饼肥(T2)、化肥减量10%+腐殖酸肥(T3)、化肥减量10%+芝麻饼肥+腐殖酸肥(T4)等不同处理下土壤理化性质和微生物群落结构的变化特征。结果表明,与CK相比,T1处理的植烟土壤养分含量和土壤酶活性均下降、土壤物理特性略有改善,配施有机肥使土壤养分和物理特性得到进一步改善,容重降低、含水率和孔隙度增加,T2和T4处理的有效磷、速效钾含量显著高于CK和T1处理,所有配施有机肥处理的土壤酶活性均显著增加。配施有机肥增加了植烟土壤中的细菌和真菌门类,其中优势细菌门类均为变形菌门和放线菌门,其次是厚壁菌门、拟杆菌门、绿弯菌门、酸杆菌门,优势真菌门类为子囊菌门、子囊菌门盘菌亚门、被孢霉门、绿藻门、纤毛虫门、担子菌门。Alpha多样性指数表明,化肥减量降低了微生物群落的丰富度,但配施有机肥处理增加了细菌和真菌群落多样性指数,其中细菌群落丰富度提高更明显。RDA分析表明,影响土壤微生物群落结构与多样性的重要土壤理化因子包括有机质、速效钾、碱解氮、有效磷和土壤物理特性等,相对而言土壤理化因子对细菌群落结构的影响更大。综上,化肥减量配施有机肥对土壤养分、物理特性、土壤酶活性及微生物群结构有显著改善效果,尤其以同时配施芝麻饼肥和腐殖酸肥处理的效果更佳。

关键词: 烟草, 化肥减量, 有机肥, 植烟土壤, 理化特性, 微生物群落结构

Abstract:

To explore the effects of fertilizer reduction and organic fertilizer application on physicochemical properties and microbial community structure of tobacco-planting soil,and provide theoretical reference for fertilizer reduction and rational application of organic fertilizer in tobacco production.Using conventional fertilization without organic fertilizer as control(CK),Illumina high-throughput sequencing technology combined with bioinformatics,the changes of soil physical and chemical properties and microbial community structure under different treatments such as 10% reduction of fertilizer(T1),10% reduction of fertilizer+sesame cake fertilizer(T2),10% reduction of fertilizer + humic acid fertilizer(T3),and 10% reduction of fertilizer + sesame cake fertilizer + humic acid fertilizer(T4)were analyzed.The results showed that compared with CK,soil nutrient content and soil enzyme activity decreased under T1 treatment,and soil physical properties were slightly improved.Combined with organic fertilizer,soil nutrient and physical properties were further improved,bulk density decreased,moisture content and porosity increased,and the contents of available phosphorus and available potassium under T2 and T4 treatment were significantly higher than those under CK and T1 treatment.The enzyme activity of soil treated with organic fertilizer increased significantly.Combined application of organic fertilizer increased the bacteria and fungi in tobacco-growing soil,among which the dominant bacteria were Proteobacteria and Actinobacteriota.Followed by Firmicutes,Bacteroidota,Chloroflexi and Acidobacteriota.The dominant fungal groups are Ascomycota,Anthophyta,Mortierellomycota,Chlorophyta,Ciliophora and Basidiomycota.The Alpha diversity index showed that the reduction of fertilizer decreased the richness of microbial community,but the combined application of organic fertilizer increased the diversity index of bacterial and fungal communities,and the bacterial community richness increased more significantly.RDA analysis showed that the important soil physicochemical factors affecting soil microbial community structure and diversity included organic matter,available potassium,alkali-hydrolyzed nitrogen,available phosphorus and soil physical properties,etc.Soil physicochemical factors had a greater impact on bacterial community structure.In conclusion,under the condition of fertilizer reduction,organic fertilizer combined with organic fertilizer can significantly improve soil nutrients,physical properties,soil enzyme activity and microflora structure,especially when combined with sesame cake fertilizer and humic acid fertilizer treatment.

Key words: Tabacco, Fertilizer reduction, Organic fertilizer, Tobacco-growing soil, Physicochemical properties, Microbial community structure

引用本文

孙子隽, 钟国兴, 张少搏, 杨欣, 彭金良, 郭维, 梁耀星, 李淮源, 白云峰, 陈建军, 邓世媛. 化肥减量配施有机肥对植烟土壤理化特性和微生物群落结构的影响[J]. 华北农学报, 2024, 39(3): 146-158. doi: 10.7668/hbnxb.20194778.

SUN Zijun, ZHONG Guoxing, ZHANG Shaobo, YANG Xin, PENG Jinliang, GUO Wei, LIANG Yaoxing, LI Huaiyuan, BAI Yunfeng, CHEN Jianjun, DENG Shiyuan. Effects of Fertilizer Reduction Combined with Organic Fertilizer on Physicochemical Properties and Microbial Community Structure of Tobacco-planting Soil[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(3): 146-158. doi: 10.7668/hbnxb.20194778.