文献类型：期刊文献

英文题名：Three decades of organic manure and chemical fertilizers co-application enhanced rice productivity through increasing the diversity and key network module of soil bacterial community

作者：Zhao, Xiran[1];Li, Jun[1];Hu, Xin[1];Hu, Baowei[1];Chu, Guixin[1];Tao, Rui[1]

机构：[1]Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China

年份：0

外文期刊名：JOURNAL OF SOILS AND SEDIMENTS

收录：SCI-EXPANDED(收录号：WOS:000943088800001)、、Scopus(收录号：2-s2.0-85149259707)、WOS

基金：AcknowledgementsThis work was jointly supported by grants from the National Natural Science Foundation of China (grant no. 42207367), the Basic Public Welfare Research Project of Zhejiang Province (no. LGN20C150003), and the China Postdoctoral Science Foundation (funded project no. 2022M711655).

语种：英文

外文关键词：Organic manure; Bacterial community; Co-occurrence network; Key species; Rice yield

外文摘要：PurposeSoil bacteria play a vital role in crop growth and production. However, the impact of long-term application of chemical fertilizers or combined with organic manure on the soil bacterial communities (diversity, structure, and co-occurrence patterns) and their relationships with rice (Oryza sativa L.) productivity remains unclear.MethodsA 30-year fertilization trial was conducted in a Chinese paddy field with three treatments of no fertilizer (CK), chemical fertilizer (NPK), chemical fertilizers, and pig manure co-application (NPKM). The co-occurrence network and key species for yield enhancement were investigated in combination with bacterial community structure by high-throughput sequencing.ResultsNPKM treatment significantly increased the contents of carbon, nitrogen, phosphorus, and pH value in the soil. Compared to CK and NPK treatments, NPKM significantly enhanced rice yield by an average of 43.51 and 18.69% in the last 2 years (2019 and 2020). NPKM rather than NPK resulted in a significant increase in bacterial alpha diversity. PCoA showed that both NPKM and NPK substantially shaped bacterial structure. Moreover, three ecological clusters (modules 1, 7, and 9) were observed under the ecological network involving all samples, and modules 1 (negative) and 7 (positive) had strong associations with rice yield. Concretely, Chloroflexi contributed most to the rice yield in module 7. Soil pH, SOM, and TN were the main soil factors affecting bacterial communities and co-occurrence patterns.ConclusionsThese results suggested that long-term organic manure and chemical fertilizer co-application outperforms chemical fertilization in increasing rice productivity through enhancing soil bacterial diversity and harboring more beneficial members in its ecological cluster.