文献类型： 外文期刊

作者： Xiao, Jian 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, Xixiangtang, Nanning 530004, Guangxi, Peoples R China

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

关键词： Sugarcane; Mechanization; Microbial community structure; Metabolites

期刊名称：CATENA （ 影响因子：6.2； 五年影响因子：6.4 ）

ISSN： 0341-8162

年卷期： 2023 年 224 卷

页码：

收录情况： SCI

摘要： To provide new insights into whether soil health and fertility in realistic sugarcane production are destroyed by full mechanized cultivation (FMC), we investigated the differential structures and functions of soil bacterial and fungal communities by FMC and conventional artificial cultivation (CAC) treatments in sugarcane fields. The results showed that the soil water, total phosphorus, available nitrogen, phosphorus, and potassium contents significantly increased, but soil bulk density and pH significantly decreased in the FMC treatment compared with the CAC treatment. The activities of soil enzymes such as beta-glucosidase, aminopeptidase, and acid phosphatase changed irregularly. Compared with the CAC treatment, significantly higher beta-glucosidase activity and significantly lower aminopeptidase and acid phosphatase activities were detected in the FMC treatment. The soil microbial biomass carbon and microbial biomass phosphorus (MBP) increased; in particular, significant increases in MBP were observed in the FMC treatment. In contrast, soil microbial biomass nitrogen significantly decreased in the FMC treatment. In addition, mechanized cultivation altered soil microbial community structures and their metabolite profiles in sugarcane fields. Although soil bacterial diversity and abundance were significantly reduced, fungal abundance was not significantly different in the FMC treatment. Moreover, compared with CAC treatments, Actinobacteria, Proteobacteria, Firmicutes, Acidothermus, Chujaibacter, Conexibacter, and Longimycelium, were significantly enriched in the FMC treatments. In addition, fungal community composition, only Gymnopilus at the genus level was significantly enriched in the FMC treatment. Eight differential metabolites were detected in soils of sugarcane fields between the FMC and CAC treatments and were also found in background (BG) soil. Among them, only organic acids and sugars were positively or negatively correlated with the abundance of different bacteria. Starch and sucrose metabolism were the most differentially expressed metabolic pathways between the FMC and CAC treatments. These results suggest that FMC did not destroy soil health and fertility in sugarcane fields.