通过水处理残留物和堆肥共同修改改善作物生长条件:土壤-水动态
Wendy Stone1,2, Jan Steytler3, Lurika de Jager3
1Stellenbosch University Water Institute, Stellenbosch, South Africa.
Journal of environmental quality
|January 31, 2024
概括
用富含酸盐的堆肥将水处理残留物 (WTR) 应用于土地,改善了沙土的特性和作物生长. 营养的可用性,而不是土壤-水的动态,是关键的干旱抵御能力在共同修改的土壤.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 用有机废物 (如堆肥) 处理残留水 (WTR) 的土地应用支持废物循环,并可以增强营养贫乏的土壤.
- 虽然WTR和堆肥对土壤特性的影响已知,但它们对沙土的综合影响,特别是对疏水性的影响,不太了解.
- 了解这些综合效应对于优化农业废弃土地应用至关重要.
研究的目的:
- 研究用WTR和堆肥共同修改沙土对土壤水动态的影响.
- 评估这项共同修正案在干旱压力下对作物生物质和用水效率 (WUE) 的影响.
- 为了确定土壤-水动态与营养物质可用性对修改土壤作物表现的相对重要性.
主要方法:
- 进行了实验室分析,以评估用WTR和堆肥修改的沙地土壤的保留水,疏水性和和液压导电性的变化.
- 使用瑞士 (Beta vulgaris L. var.) 进行了一项多因素试验. 在共同修改的土壤中,评估干旱压力下的作物生物质和WUE.
- 在整个试验期间,监测了土壤营养水平,特别是酸盐,以及土壤-水动态.
主要成果:
- 与WTR和堆肥共同修改沙土,对土壤-水动力学产生中介效应,增加保留水和降低疏水性.
- 实验室试验表明,随着共同修改,液压导电率增加了两倍,水保持率增加了27%.
- 在试验中,共同修改的土壤显著增强了作物生物质和WUE,酸盐的可用性被确定为对抗干旱的土壤-水动态更为关键.
结论:
- 与WTR和富含酸盐的有机废物共同修改沙土,有利于改善土壤特性和作物生长.
- 富含酸盐的有机共同修改对于确保作物营养充足和提高WTR修改的沙土干旱抵御能力至关重要.
- 在土地应用实践中,废物与土壤的战略配对对于最大限度地提高肥力,生物质生产和抗旱能力至关重要.
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