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Haotian Gong¹, Hui Zhai², Yujian Wang²

¹College of Ecology and Environment, Xinjiang University, Urumqi 830046, China; Key Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi 830046, China; Institute of Soil and Fertilizer, Agricultural Water Saving, Xinjiang Academy of Agricultural Sciences, Urumqi 830092, China.

The Science of the total environment

|December 4, 2024

概括

羊 (SM) 应用与交替湿干 (AWD) 水管理可提高 (Se) 在米土壤中的生物可用性. 生物炭 (BC) 降低了Se的生物可用性,而AWD则促进了Se的转化和细菌活性.

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:

(Se) 在丰富的土中的生物可用性受到水资源管理和有机修改的影响.
了解这些综合效应对于优化农业实践和Se的采用至关重要.

研究的目的:

调查连续洪水 (CF) 和交替湿和干 (AWD) 水管理,结合棉生物炭 (BC) 和羊 (SM) 在两个度,对Se生物可用性的影响.
阐明影响Se生物可用性和土壤细菌社区结构在Se丰富的土中的机制.

主要方法:

用Se丰富的米土壤进行实地实验.
应用两个水资源管理制度:连续洪水 (CF) 和交替湿和干 (AWD).
纳入两个有机修正案:棉花生物炭 (BC) 和羊 (SM) 在10和50g·kg-1.

主要成果:

羊 (SM) 10 g·kg−1显著增加了Se的生物可用性,特别是在AWD条件下.
棉生物炭 (BC) 的应用降低了Se的生物可用性.
AWD处理增强了根表面铁板中的Se含量,并促进了Se分量的转化.
无论是BC还是SM都改变了土壤溶液化学 (Fe,II,溶解的有机碳) 并显著改变了细菌群体结构,包括氧化硫和减少Se的细菌.

结论:

交替的湿干 (AWD) 水管理,加上适当的有机修订,如羊 (SM),可以提高 (Se) 在米土壤中的生物可用性.
在细菌群体中观察到的变化,特别是硫氧化和Se-减少细菌,与生物可用Se水平密切相关.
这些发现为在含丰富的土中可持续的农业实践提供了理论指导.

关键词:

细菌社区的细菌社区铁板是铁板的组成部分.有机修改有机修改富含海洋的土壤水资源管理水资源管理

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