| 青枯病不同发病率土壤对番茄植株氮素吸收效率的影响 |
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| 引用本文： | 朱成之,段旭,张娜,徐志辉,邓旭辉,李荣,沈其荣.青枯病不同发病率土壤对番茄植株氮素吸收效率的影响[J].土壤,2022,54(3):446-454. |
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| 作者姓名： | 朱成之 段旭 张娜 徐志辉 邓旭辉 李荣 沈其荣 |
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| 作者单位： | 南京农业大学,南京农业大学,南京农业大学,南京农业大学,南京农业大学,南京农业大学,南京农业大学 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 为研究青枯病不同发病率土壤对番茄植株氮素吸收效率的影响，以番茄为供试植物，采集连作多年后6种青枯病不同发病率(12.5%、21.9%、40.0%、59.4%、83.3%和91.6%)的土壤，进行盆栽试验。结果表明，随着初始土壤青枯病发病率逐渐升高，番茄植株生物量和氮素吸收效率呈下降趋势，且存在显著相关性；初始土壤中全氮、铵态氮和硝态氮含量与植株的氮素吸收效率无显著相关；初始土壤的细菌多样性和群落组成与植株的氮素吸收效率无显著相关，但基于OTU的细菌群落变化与植物氮素吸收效率呈显著相关性，溶杆菌属(Lysobacter)和藤黄单胞菌属(Luteimonas)细菌与植株氮素吸收效率呈显著正相关，其中溶杆菌属(Lysobacter)细菌同时与发病率呈显著负相关。综上，本研究发现，受不同程度的连作障碍影响，土壤的氮素含量与植物氮素吸收效率无显著相关性，而初始土壤的细菌群落与植物氮素吸收效率存在显著相关性。
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| 关 键 词： | 连作障碍 青枯病 氮素吸收效率 番茄 土壤细菌群落 |
| 收稿时间： | 2021/4/1 0:00:00 |
| 修稿时间： | 2021/10/24 0:00:00 |
Effects of Soils with Different Bacterial Wilt Disease Incidences on Nitrogen Absorption Efficiency of Tomato Plants |
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| ZHU Chengzhi,DUAN Xu,ZHANG N,XU Zhihui,DENG Xuhui,LI Rong,SHEN Qirong.Effects of Soils with Different Bacterial Wilt Disease Incidences on Nitrogen Absorption Efficiency of Tomato Plants[J].Soils,2022,54(3):446-454. |
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| Authors: | ZHU Chengzhi DUAN Xu ZHANG N XU Zhihui DENG Xuhui LI Rong SHEN Qirong |
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| Institution: | National Engineering Research Center for Organic-based Fertilizers,Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River,Ministry of Agriculture,Jiangsu Key Laboratory of Solid Organic Waste Utilization,Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing Agricultural University,National Engineering Research Center for Organic-based Fertilizers,Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River,Ministry of Agriculture,Jiangsu Key Laboratory of Solid Organic Waste Utilization,Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing Agricultural University,National Engineering Research Center for Organic-based Fertilizers,Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River,Ministry of Agriculture,Jiangsu Key Laboratory of Solid Organic Waste Utilization,Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing Agricultural University,National Engineering Research Center for Organic-based Fertilizers,Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River,Ministry of Agriculture,Jiangsu Key Laboratory of Solid Organic Waste Utilization,Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing Agricultural University,National Engineering Research Center for Organic-based Fertilizers,Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River,Ministry of Agriculture,Jiangsu Key Laboratory of Solid Organic Waste Utilization,Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing Agricultural University,National Engineering Research Center for Organic-based Fertilizers,Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River,Ministry of Agriculture,Jiangsu Key Laboratory of Solid Organic Waste Utilization,Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing Agricultural University,National Engineering Research Center for Organic-based Fertilizers,Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River,Ministry of Agriculture,Jiangsu Key Laboratory of Solid Organic Waste Utilization,Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing Agricultural University |
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| Abstract: | In order to evaluate the effects of different initial and harvesting nitrogen contents and initial bacterial communities in soils with different continuous cropping obstacles on plant nitrogen uptake efficiency. Tomato was used as the test plant and soils with different disease incidences (12.5%, 21.9%, 40.0%, 59.4%, 83.3% and 91.6%) were collected to perform a greenhouse pot experiment was conducted. The results showed that with the increase of initial soil bacterial wilt disease incidence, tomato plant biomass and nitrogen uptake efficiency showed a significant decreasing trend. There was no significant correlation between soil total N, ammonium N and nitrate N contents with plant N uptake efficiency at the beginning and after planting. No significant correlation between initial soil bacterial diversity and community composition with plant nitrogen absorption efficiency; however, significant correlation was observed between bacterial community change based on OTU analysis and plant N uptake efficiency. The relative abundances of Lysobacter and Luteimonas showed a significant and positive correlation with plant N uptake efficiency, and among which Lysobacter also showed a significant and negative correlation with tomato bacterial wilt disease incidence. In conclusion, this study observed that the initial bacterial community in the soil with continuous cropping obstacle, but not the nitrogen nutritional status, was correlated with the plant nitrogen uptake. |
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| Keywords: | Continuous cropping obstacle Bacterial wilt disease Nitrogen absorption efficiency Tomato Soil bacteria community |
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