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Response of endophytic bacteria in sugarcane roots to different slow-release fertilizers with dicyandiamide (DCD) and humic acid (HA) applications

文献类型： 外文期刊

作者： Xiao, Jian 1 ; Chen, Siyu 1 ; Liang, Tian 2 ; Yang, Shangdong 1 ; Tan, Hongwei 2 ;

作者机构： 1.Guangxi Univ, Agr Coll, Natl Demonstrat Ctr Expt Plant Sci Educ, Guangxi Key Lab Agroenvironm & Agroprod Safety, Nanning 530004, Guangxi, Peoples R China

2.Guangxi Acad Agr Sci, Guangxi Key Lab Sugarcane Genet Improvement, Nanning 530007, Guangxi, Peoples R China

3.Hunan Univ, Coll Biol, Longping Branch, Changsha 410125, Hunan, Peoples R China

4.Guangxi Univ, Agr Coll, 100 Univ Rd, Nanning 530004, Guangxi, Peoples R China

5.Guangxi Acad Agr Sci, Guangxi Key Lab Sugarcane Genet Improvement, 174 East Univ Rd, Nanning 530007, Guangxi, Peoples R China

关键词： Sugarcane; Slow-release fertilizers; Root; Endophytic bacterial compositions

期刊名称：ENVIRONMENTAL TECHNOLOGY & INNOVATION （ 影响因子：7.1； 五年影响因子：6.9 ）

ISSN： 2352-1864

年卷期： 2023 年 32 卷

页码：

收录情况： SCI

摘要： The overuse of chemical fertilizers has severe consequences on environmental ecosys-tems. However, slow-release fertilizers (SRFs) can reduce the total amount and number of fertilizer applications and improve efficiency. Field experiments were conducted in early March 2016 to investigate the proper usage of SRFs such as dicyandiamide (DCD) and humic acid (HA). Seven treatments were set up as follows: SRF with 120 g t-1 DCD (A); SRF with 150 g t-1 DCD (B); SRF with 235 g t-1 DCD (C); SRF with 3 kg t-1 HA (D); SRF with 8 kg t-1 HA (E); SRF with 18 kg t-1 HA (F); and traditional fertilization (CK). The abundance of endophytic bacteria in sugarcane roots under the B treatment was significantly higher than that under traditional fertilization. At the genus level, Massilia, Granulicella, and Herbaspirillum were unique and dominant in the sugarcane roots under the CK treatment. Compared with CK, Streptomyces was the unique dominant endophytic bacteria in sugarcane roots under different SRFs applications. These results suggest that cane health and tolerance to environmental stresses were not significantly altered after applying SRFs in sugarcane fields. & COPY; 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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