Key Laboratory of Plant Disease and Pest Control of Hainan Province, Institute of Plant Protection (Research Center of Quality Safety and Standards for Agricultural Products of Hainan Academy of Agricultural Sciences), Hainan Academy of Agricultural Sciences, Haikou 571100, China.
Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests Ministry of Education, Hainan University, Haikou 571100, China.
Int J Mol Sci. 2024 Oct 18;25(20):11231. doi: 10.3390/ijms252011231.
To mitigate soil degradation and decrease dependency on chemical inputs in agriculture, this study examined the joint effects of coconut shell biochar and strain Ya-1 on soil fertility, rhizosphere bacterial communities, and the growth of chili ( L.). A controlled pot experiment with four treatments was conducted: control (CK), biochar only (C), strain Ya-1 only (B), and a combination of both (BC). The BC treatment significantly enhanced the soil carbon and available phosphorus contents by approximately 20% and the soil nitrogen content and pH by 18% and 0.3 units, respectively, compared to the control. It also increased microbial biomass carbon and nitrogen by 25% and 30%, respectively, indicating improved soil microbial diversity as shown by the highest Pielou evenness index and Shannon index values. The combined application of biochar and the Ya-1 strain resulted in a 15% increase in chili plant height and a 40% improvement in root dehydrogenase activity, suggesting enhanced nutrient uptake and metabolism. Metabolic profiling showed shifts in stress response and nutrient assimilation under different treatments. Collectively, these results indicate the potential of biochar and microbial inoculants to significantly promote soil and plant health, providing a sustainable strategy to improve agricultural productivity and reduce reliance on chemical inputs.
为了减轻土壤退化并减少农业对化学投入物的依赖，本研究探讨了椰子壳生物炭和 Ya-1 菌株对土壤肥力、根际细菌群落和辣椒生长的联合影响。采用了四种处理的控制盆载实验：对照（CK）、仅生物炭（C）、仅 Ya-1 菌株（B）和两者的组合（BC）。与对照相比，BC 处理使土壤碳和有效磷含量分别增加了约 20%和 18%，土壤氮含量和 pH 值分别增加了 18%和 0.3 个单位。它还分别使微生物生物量碳和氮增加了 25%和 30%，表明土壤微生物多样性得到了改善，表现在最高的皮耶罗均匀度指数和香农指数值上。生物炭和 Ya-1 菌株的联合应用使辣椒株高增加了 15%，根脱氢酶活性提高了 40%，表明养分吸收和代谢得到了增强。代谢谱分析表明，在不同处理下，植物表现出了应激反应和养分同化的变化。总的来说，这些结果表明生物炭和微生物接种剂具有显著促进土壤和植物健康的潜力，为提高农业生产力和减少对化学投入物的依赖提供了一种可持续的策略。
