Improving yield and quality of vegetable grown in PAEs-contaminated soils by using novel bioorganic fertilizer.
Improving yield and quality of vegetable grown in PAEs-contaminated soils by using novel bioorganic fertilizer.
复制标题
DOI：
10.1016/j.scitotenv.2020.139883
复制
发表时间：
2020-06
期刊：
影响因子：
--
通讯作者：
Nai-Xian Feng;Qingzhao Liang;Yu-Xi Feng;L. Xiang;Hai-Ming Zhao;Yan-Wen Li;Hui Li;Q. Cai;C. Mo
中科院分区：
文献类型：
--
作者：
Nai-Xian Feng;Qingzhao Liang;Yu-Xi Feng;L. Xiang;Hai-Ming Zhao;Yan-Wen Li;Hui Li;Q. Cai;C. Mo
邻苯二甲酸酯（PAEs）是农业土壤中普遍存在的污染物。施用含有有益微生物的生物有机肥是提高污染土壤作物产量和品质的有效途径。以城市污泥和农业废弃物为原料，经堆肥处理后，添加PAEs降解菌B，研制出一种新型多功能生物有机肥N-BOF。megaterium YJB 3和溶磷菌B. megateriumYLYP1.通过盆栽试验，评价了其在邻苯二甲酸二丁酯（DBP）和邻苯二甲酸二丁酯（DEHP）污染土壤上提高蔬菜产量和品质的可行性。N-BOF能有效地促进植物生长，生物量比化肥（CF）和不施肥（CK）分别增加4-66.9%和19-110%。结果表明，施用化学肥料的蔬菜地上部中DBP和DEHP的含量范围分别为1.23- 3.12mg/kg（干重）和1.63- 3.89mg/kg（干重）。当N-BOF添加量分别为1%、2%、5%时，其浓度显著降低（p< 0.05），尤其是在较高的施用量（0.11- 0.3mg/kg（DW）和0.16- 0.32mg/kg（DW））下。同时，施用2% N-BOF还显著改善了蔬菜品质，提高了维生素C、维生素B1、总蛋白和淀粉含量，降低了亚硝酸盐和硝酸盐含量。在这种情况下，食用在受PAEs污染的土壤中种植的蔬菜对人类健康的风险可以大大降低。因此，我们的研究有望提供一个有效的途径，高价值的有机基板，生产低成本，但高品质的氮BOF。未来的研究N-BOF的肥料制度对蔬菜的产量和品质的影响是必要的，进一步的实地研究，以评估这种有前途的N-BOF的长期有效性和可靠性也是必要的。
Phthalate acid esters (PAEs) are ubiquitous pollutants in agricultural soils. Application of bioorganic fertilizer (BOF) containing beneficial microbes represents a promising approach to improve the yield and quality of crops grown in contaminated soils. In the present study, a novel multifunctional bioorganic fertilizer N-BOF was developed by using compost of sewage sludge and agricultural waste and inoculating with PAEs-degradingB. megateriumYJB3 and phosphate solubilizingB. megateriumYLYP1. Its feasibility of improving the yield and quality of vegetable grown in PAEs (including DBP and DEHP) contaminated soil was evaluated by pot experiments. The N-BOF could effectively promote plant growth, with biomass increasing by 4–66.9% and 19–110% compared to chemical (CF) and no fertilizer (CK), respectively. The concentrations of DBP and DEHP in shoots of chemically fertilised vegetable ranged 1.23–3.12 mg/kg (dry weight, DW) and 1.63–3.89 mg/kg (DW), respectively. Their concentrations were significantly decreased (p< 0.05) when N-BOF was applied (1%, 2%, 5% amendment), especially at higher application rate ranging 0.11–0.3 mg/kg (DW) and 0.16–0.32 mg/kg (DW), respectively. Meanwhile, vegetable quality attributes were also significantly improved when 2% N-BOF was applied, with increase in the contents of vitamin C, vitamin B1, total protein, and starch, and decrease in the contents of nitrite and nitrate. In this case, the human health risk from consumption of the vegetable grown in PAEs-contaminated soil could be significantly reduced. Thus, our study is expected to provide an efficient way of high-value utilization of organic substrates by producing low-cost but high quality N-BOF. Future studies on the effects of N-BOF in terms of fertilizer regimes on yield and quality of the vegetable are needed, and further field studies for assessing the long-term efficacy and reliability of this promising N-BOF are also warranted.