School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China.
School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China.
Waste Manag. 2022 May 1;144:490-501. doi: 10.1016/j.wasman.2022.04.003. Epub 2022 Apr 22.
Biogas slurry(BS) from food waste anaerobic fermentation coexisted a lot of salinity that could damage soil and crops health. So, this study was to explore the effect of the application of biogas slurry on soil salinization in 1 ∼ 4 cm, 4-6 cm and 6 ∼ 8 cm soil layers every 10 days, Chinese cabbage growth and rhizobacteria. The results indicated that ≤ 10% concentration of biogas slurry was uninjurious for soil and plant, the dry weight growth rate was 73.7% compared with CK, long term application should be further evaluated the potential risk of salinity on underground water and human health. As for high concentration of biogas slurry ≥ 10% concentration of biogas slurry could inhibit the seed germination and root elongation, and the germination percentage was declined from 87.6% to 2.4%, but 50% and 100% concentration of biogas slurry showed a promotion of crop growth because of sufficient nutrition. However, the potential accumulation of salinity could be seen in high concentration of biogas slurry for long term application especially in top1-4 cm soil. Correlation analysis showed that Cl was the main factor resulting high EC in all soil layers. 16S rRNA sequencing showed that UCG-004, Ketobacter, Sphingopyxis and RB41 could be regard as the indicators for determining the potential jeopardize on soil environmental by high salinity from biogas slurry.
沼液（BS）来自于食物废物的厌氧发酵，共存着大量的盐分，可能会破坏土壤和作物的健康。因此，本研究旨在探索沼液在 1~4cm、4-6cm 和 6-8cm 土壤层中的应用对土壤盐渍化的影响，以及对小白菜生长和根际细菌的影响。结果表明，浓度≤10%的沼液对土壤和植物无害，与 CK 相比，干重增长率为 73.7%，长期应用应进一步评估盐分对地下水和人类健康的潜在风险。对于高浓度的沼液（≥10%），沼液会抑制种子的萌发和根伸长，发芽率从 87.6%下降到 2.4%，但 50%和 100%的沼液由于营养充足，表现出对作物生长的促进作用。然而，长期高浓度沼液应用可能会导致盐分的潜在积累，特别是在表层 1-4cm 土壤中。相关性分析表明，所有土层中 EC 值升高的主要因素是 Cl。16S rRNA 测序表明，UCG-004、Ketobacter、Sphingopyxis 和 RB41 可以作为判断高盐度沼液对土壤环境潜在危害的指标。
