Bai Shahla Hosseini, Omidvar Negar, Gallart Marta, Kämper Wiebke, Tahmasbian Iman, Farrar Michael B, Singh Kanika, Zhou Guiyao, Muqadass Bushra, Xu Cheng-Yuan, Koech Richard, Li Yujuan, Nguyen Thi Thu Nhan, van Zwieten Lukas
Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Nathan Campus, QLD 4111, Australia; School of Health, Medical and Applied Sciences, Central Queensland University, Bundaberg, QLD 4670, Australia.
Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Nathan Campus, QLD 4111, Australia.
Sci Total Environ. 2022 Feb 20;808:152073. doi: 10.1016/j.scitotenv.2021.152073. Epub 2021 Dec 1.
The use of biochar is changing, and the combined application of biochar with fertilizer is increasingly gaining acceptance. However, the yield gains results reported in the existing literature through the co-application of fertilizer with biochar are conflicting. To resolve this, we utilized a meta-analysis of 627 paired data points extracted from 57 published articles to assess the performance of the co-application of biochar and fertilizers on crop yield compared with the corresponding controls. We also studied the impact of biochar characteristics, experimental conditions, and soil properties on crop yield. Our analysis showed that individually, biochar and inorganic fertilizer increased crop yield by 25.3% ± 3.2 (Bootstrap CI 95%) and 21.9% ± 4.4, respectively. The co-application of biochar with both inorganic and organic fertilizers increased crop yield by 179.6% ± 18.7, however, this data needs to be treated with caution due to the limited dataset. The highest yield increase was observed with amendments to very acidic soils (pH ≤5), but the benefits of biochar were not affected by the rate and the time after the application. In addition, the effects of biochar are enhanced when it is produced at 401-500 °C with a C:N ratio of 31-100. Our results suggest that the co-application of biochar with either inorganic and/or organic fertilizers in acidic soils increase crop productivity compared to amendment with either fertilizer or biochar. Our meta-analysis supports the utilization of biochar to enhance the efficiency and profitability of fertilizers.
生物炭的用途正在发生变化，生物炭与肥料的联合应用越来越受到认可。然而，现有文献中报道的通过生物炭与肥料共同施用获得的增产结果相互矛盾。为了解决这个问题，我们对从57篇已发表文章中提取的627个配对数据点进行了荟萃分析，以评估生物炭与肥料共同施用对作物产量的影响，并与相应的对照进行比较。我们还研究了生物炭特性、实验条件和土壤性质对作物产量的影响。我们的分析表明，单独使用生物炭和无机肥料分别使作物产量提高了25.3%±3.2（自展置信区间95%）和21.9%±4.4。生物炭与无机肥料和有机肥料共同施用使作物产量提高了179.6%±18.7，然而，由于数据集有限，该数据需要谨慎对待。在改良极酸性土壤（pH≤5）时观察到最高的产量增加，但生物炭的益处不受施用量和施用后时间的影响。此外，当生物炭在401-500°C下生产，碳氮比为31-100时，其效果会增强。我们的结果表明，与单独施用肥料或生物炭相比，在酸性土壤中将生物炭与无机和/或有机肥料共同施用可提高作物生产力。我们的荟萃分析支持利用生物炭提高肥料的效率和盈利能力。
