在干旱压力下通过生物炭应用可持续的土壤管理:固定,改善土壤质量,增强植物生长
Abhishek Kumar1, Tanushree Bhattacharya2, Wasim Akram Shaikh3
1Department of Civil and Environmental Engineering, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India; Department of Land, Air, and Water Resources, University of California, Davis, CA, 95616, United States.
Environmental research
|July 3, 2024
概括
气候变化引起的干旱会损害农作物和土壤. 应用草生物炭 (RSB) 和牛肥生物炭 (CEB) 改善了土壤健康,减少了污染,并提高了农作物产量,即使在干旱压力下. 这促进了可持续农业.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 气候变化加剧干旱,导致金属化物污染增加和土壤质量降低,对作物生产产生负面影响.
- 传统的农业实践往往依赖于农业化学品,这可能会对环境产生不利影响.
研究的目的:
- 调查草衍生生物炭 (RSB) 和牛肥丰富生物炭 (CEB) 在减轻干旱影响方面的有效性.
- 评估生物炭修正案在改善土壤肥沃性,减少污染和提高作物产量方面的潜力.
- 探索使用生物炭作为农业化学品的可持续替代品.
主要方法:
- 实地和实验使用RSB和CEB进行,剂量不同 (0%,2.5%,5%,7.5%).
- 分析了土壤的物理化学特性,包括散密度,阴离子/离子交换能力,多孔性,水容量,呼吸能力和营养含量.
- 量化了分数 (可移动,可生物利用,可浸) 和植物生长参数 (生物质,长度,积).
主要成果:
- 在干旱条件下,RSB和CEB的修正,特别是7.5%的剂量,显著改善了土壤特性,减少了散装密度,增加了CEC,AEC,多孔性,WHC,呼吸和营养含量 (N,P).
- 生物炭的应用大大降低了土壤中的移动,生物可用和可浸的分数.
- 盆栽实验表明,使用RSB和CEB治疗的孟加拉和大植物的生长 (生物质和长度) 增强,积累减少.
结论:
- 生物炭的应用有效地改善了土壤的物理化学性质,减轻了污染,并促进了作物生长,即使在干旱压力的环境中也是如此.
- 牛肥丰富生物炭 (CEB) 为富含营养的生物炭生产提供了一个可持续的途径,支持循环经济原则.
- 生物炭提出了一项可行的长期战略,旨在改善土壤健康,应对气候变化影响,并通过可持续农业确保粮食安全.
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