用经过处理的生产水灌的土壤中的植物生长,离子动力学和微生物群落,以实现可持续农业的可持续农业
Punhasa S Senanayake1, Yanyan Zhang1, E M N Thiloka Edirisooriya1
1Department of Civil Engineering, New Mexico State University, Las Cruces, NM, 88003, United States.
The Science of the total environment
|September 20, 2025
概括
经过处理的生产水 (tPW) 灌在中等盐度水平 (≤1000 mg/L TDS) 上是可行的,改善了土壤健康和草料质量. 较高的盐度 (1500 mg/L TDS) 会降解土壤,并对微生物群落产生负面影响.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 农业科学 农业科学
背景情况:
- 由于水资源稀缺,人们对再利用处理后产生的水 (tPW) 进行灌产生了兴趣.
- 对于TPW对土壤健康,植物性能和微生物群落的影响需要进一步调查.
研究的目的:
- 评估tPW灌在不同总溶解固体 (TDS) 度下对土壤特性,植物生长和微生物群落的影响.
- 确定可持续的tPW在农业中再利用的最佳盐度值.
主要方法:
- 在9个月的温室实验中,使用富含粘土和沙泥土.
- 用500,1000和1500 mg/L TDS的tPW灌,用淡化地下水作为对照.
- 分析土壤质量指数,离子动力学,植物 () 营养含量和微生物群落组成.
主要成果:
- 在≤1000 mg/L的TPW下,TDS保持或改善了土壤健康,平衡了离子谱,并支持了微生物活动.
- 1500mg/L的TPW导致土壤退化,盐度增加,离子积累和营养物质耗尽.
- 用1000 mg/L tPW灌的露显示出提高了原始蛋白质和消化能力.
- 微生物多样性在≤1000 mg/L TDS时受到最小的影响,但1500 mg/L改变了真菌组成,并在粘土土中增加了病原体.
结论:
- 在水稀缺地区,当盐度控制在1000 mg/L以下时,tPW灌对可持续农业具有前景.
- 仔细管理盐度和离子积累对于防止土壤退化和保持微生物健康至关重要.
- 优化tPW的再利用可以提高料质量,并支持长期的农业生产力.
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