An improved carbon fixation management strategy into the crop–soil ecosystem by using biomass ash as the medium

Returning the carbonated biomass ash into soil can enhance carbon fixation capacity of crop–soil ecosystem, contributing to achievement ‘4 per mille Soils for Food Security and Climate’ goal launched at COP21. The CO2 sequestration ecosystem induced by ash, however, highly depended on pH crops growth, which have not​ been elucidated. Here, we explored effects different management strategies (watering, chemical fertilizer, CO2-rich biogas slurry performance tomato (Tom-E) containing one plant, soil, evaluated impact cultivation concerning fixation. Results showed that when burying did not cause physiological stress even improved qualities. Furthermore, through sequestrating from reached about 8.8 ± 1.10, 13.7 0.74, 20.7 0.53 mmol-CO2/Tom-E watering, strategies, respectively. However, due influence fertilization strategy, 57.4% 0.09 27.3% sequestrated in returned atmosphere (i.e, loss) only watering treatment conventional (chemical fertilizer) treatment, Comparatively, as a buffering application bicarbonate assimilation environment tomato, contributed reducing loss 12.5% 0.01. Clearly, adopting fertilizer provides suitable potential strategy enhancement sink.