增强土壤 P 固定化和微生物生物质 P 通过应用蛋修饰的生物炭
Shuangchi Li1, Ning Wang1, Shuiqing Chen1
1School of Agriculture, Sun Yat-sen University, Guangzhou, Guangdong, 510275, PR China.
Journal of environmental management
|July 8, 2023
概括
蛋修改的生物炭有效地固定了土壤中的 (P),大大提高了植物的P可用性,并减少了P损失. 这种可持续的修正提高了作物产量,并最大限度地减少了过度使用肥料造成的环境污染.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤化学 土壤化学
背景情况:
- 过度的化肥应用导致 (P) 损失和农业的低利用效率.
- 这种环境问题对水生生态系统构成风险,并降低了肥料的有效性.
研究的目的:
- 开发和评估蛋修饰的生物炭,以增强土壤中的固定和利用.
- 研究这些生物炭作为土壤修饰物的吸附机制和有效性.
主要方法:
- 从蛋和植物废物 (玉米或果皮) 制备蛋修饰的生物碳.
- 使用BET,FTIR,XRD,XPS和SEM进行生物炭特性表征.
- 用大豆进行吸附实验,Langmuir模型适配,以及/柱子浸研究.
主要成果:
- 蛋修饰的生物炭显示出高的P吸附能力 (高达200mg/g),遵循Langmuir单层吸附动力学.
- 在P吸附后,生物炭表面上的化合物转化为酸.
- 应用增加了土壤微生物生物质P (51.6-61.8毫克/公斤) 和大豆植物高度 (13.8-26.7%),同时降低了液P度97.9%.
结论:
- 蛋修改的生物炭有效地固定了土壤,改善了P的可用性和植物吸收.
- 这些生物炭显著减少了的出,减轻了环境污染.
- 这项研究提出了一种新的方法,使用蛋修饰的生物炭作为可持续的土壤修改剂,以有效地管理.
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