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Vermicompost:In situ retardant of antibiotic resistome accumulation in cropland soils

Journal of Environmental Sciences 2024年第7期141卷 277-286页

作者： Meirui Mu Fengxia Yang Bingjun Han Guisheng Tian Keqiang Zhang Agro-Environmental Protection Institute Ministry of Agriculture and Rural AffairsTianjin 300191China Key Laboratory of Low-carbon Green agriculture in North China Ministry of Agriculture and Rural Affairs P.R.ChinaBeijing 10083China wuxue city agriculture and rural bureau Wuhan 435400China

The dissemination of antibiotic resistance genes(ARGs)in soil has become a global environmental issue.Vermicomposting is gaining prominence in agricultural practices as a soil amendment to improve soil quality.However,its impact on soil ARGs remains unclear when it occurs in farmland.We comprehensively explored the evolution and fate of ARGs and their hosts in the field soil profiles under vermicompost application for more than 3years.Vermicompost application increased several ARG loads in soil environment but decreased the high-risk bla-ARGs(bla_(ampC),bla_(NDM),and bla_(GES-1))by log(0.04-0.43).ARGs in soil amended with vermicompost primarily occurred in topsoil(approximately 1.04-fold of unfertilized soil),but it is worth noting that their levels in the 40-60 cm soil layer were the same or even less than in the unfertilized soil.The microbial community structure changed in soil profiles after vermicompost application.Vermicompost application altered the microbial community structure in soil profiles,showing that the dominant bacteria(i.e.,Proteobacteria,Actinobacteriota,Firmicutes)were decreased 2.62%-5.48%with the increase of soil depth.A network analysis further revealed that most of ARG dominant host bacteria did not migrate from surface soil to deep soil.In particular,those host bacteria harboring high-risk bla-ARGs were primarily concentrated in the surface soil.This study highlights a lower risk of the propagation of ARGs caused by vermicompost application and provides a novel approach to reduce and relieve the dissemination of ARGs derived from animals in agricultural production.

关键词： Vermicompost application Antibiotic resistance genes Vertical migration Soil profile Agricultural soils

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Treating Ventricular Hemorrhage by Bilateral External Ventricular Drainage, Perfusion with Urokinase, Lumbar Puncture and Replacement of Cerebrospinal Fluid--Attached Report on 16 Cases

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美国中华健康卫生杂志 2005年第4期8卷 54-56页

作者： GUI Yaxiong CHEN Hui CHEN Jinggang The First People＇s Hospital of wuxue city Hubei 435400 China

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Effects of controlled-release urea application on the growth, yield and nitrogen recovery efficiency of cotton

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Agricultural Sciences 2013年第12期4卷 33-38页

作者： Suping Wang Xiaokun Li Jianwei Lu Juan Hong Gang Chen Xinxin Xue Jifu Li Yunxia Wei Jialong Zou Guangwen Liu College of Resources and Environment Huazhong Agricultural University Wuhan China College of Resources and Environment Huazhong Agricultural University Wuhan China Wuhan Institute of Agricultural Sciences Wuhan China College of Resources and Environment Huazhong Agricultural University Wuhan China Wuhan Institute of Agricultural Sciences Wuhan China Soil and Fertilizer Station of Jingzhou city Jingzhou China Soil and Fertilizer Station of wuxue city Wuxue China Wuhan Institute of Agricultural Sciences Wuhan China

Field experiments were conducted to study the effects of the controlled release urea (CRU) application on growth yield and nitrogen recovery efficiency of cotton in the main cotton zone of the Yangtze River basin in 2010. Different nitrogen levels were set in order to determine the suitable dosage of CRU on cotton. The special purpose was to provide evidence for the CRU application in cotton fields. The results show that the application of CRU promotes the growth of cotton significantly and enhances the nitrogen supply in the whole period. Compared to the treatment with total N as base fertilizer (UB), the bod, flower, little bolls and total bolls are increased significantly. There are no significant differences in the yield between the CRU treatment and the treatment of controlled release urea and urea combined application (60%CRU + 40%U), but an increase by 12.38%-22.67% compared to the UB treatment, and an increase by 4.49%-7.23% compared to the treatments of total N split application (UD). The nitrogen uptake of CRU treatment was significantly increased by 13.01%-48.32% and 30.27%-13.01% than UB treatment and UD treatment, respectively. The nutrient recovery efficiency of CRU treatment is increased by 16.42-20.59, 5.92-11.29 and 4.22-12.59 percentage points compared to the UB treatment, UD treatment and 60%CRU + 40%U treatment, respectively. In this study, there was a good linearity relationship between the cotton yield and amount of CRU in wuxue site. The yield of cotton response to amount of CRU could be described by the model of linear plus plateau in Jingzhou site.

关键词： Controlled Release Urea Cotton Yield Nitrogen Recovery Efficiency

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