Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
College of Agricultural, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Biomed Res Int. 2020 Oct 20;2020:9381506. doi: 10.1155/2020/9381506. eCollection 2020.
Organic fertilizers are critically important to soil fertility, microbial communities, and sustainable agricultural strategies. We compared the effect of two fertilizer groups (organic+chemical fertilizer: OM, chemical fertilizer: CK) on sugarcane growth, by observing the difference in microbial communities and functions, soil nutrient status, and agronomic characters of sugarcane. The results showed that the sugar content and yield of sugarcane increased significantly under organic fertilizer treatment. We believe that the increased soil nutrient status and soil microorganisms are the reasons for this phenomenon. In addition, redundancy analysis (RDA) shows that the soil nutrient condition has a major impact on the soil microbial community. In comparison with CK, the species richness of Acidobacteria, Proteobacteria, Chloroflexi, and Gemmatimonadetes as well as the functional abundance of nucleotide metabolism and energy metabolism increased significantly in the OM field. Moreover, compared with CK, genes related to the absorption and biosynthesis of sulfate were more prominent in OM. Therefore, consecutive organic fertilizer application could be an effective method in reference to sustainable production of sugarcane.
有机肥对土壤肥力、微生物群落和可持续农业策略至关重要。我们通过观察微生物群落和功能、土壤养分状况以及甘蔗农艺性状的差异，比较了两种肥料组（有机肥+化肥：OM，化肥：CK）对甘蔗生长的影响。结果表明，有机肥处理显著提高了甘蔗的含糖量和产量。我们认为，土壤养分状况和土壤微生物的增加是造成这种现象的原因。此外，冗余分析（RDA）表明，土壤养分条件对土壤微生物群落有重大影响。与 CK 相比，OM 中 Acidobacteria、Proteobacteria、Chloroflexi 和 Gemmatimonadetes 的丰富度以及核苷酸代谢和能量代谢的功能丰度显著增加，并且 OM 中与硫酸盐吸收和生物合成相关的基因更为突出。因此，连续施用有机肥可能是甘蔗可持续生产的有效方法。
