长期叶子喷导致土壤的积累,降低了土壤微生物多样性,并在大米根中增强了土壤脱
Chenyang Xue1,2, Lixia Cao1, Xiaojun Li1
1Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Journal of agricultural and food chemistry
|December 23, 2025
概括
叶子的应用增加了水的,但长期损害了土壤微生物和生物多样性. 这减少了农业的可持续性,增加了营养损失和潜在的N2O排放.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤微生物学 土壤微生物学
背景情况:
- 可持续农业需要平衡农作物生产与环境和生物多样性保护.
- 叶子 (Se) 应用是一种已知的方法,可以提高米等作物中的Se含量.
- 叶子Se对土壤微生物群落及其功能的长期影响在很大程度上仍未得到研究.
研究的目的:
- 为了评估长期叶子Se应用对大米生产的影响.
- 评估叶子Se应用对土壤微生物多样性和社区结构的后果.
- 研究土壤微生物群落的功能转变,特别是营养循环.
主要方法:
- 一个为期3年的实地实验,涉及叶子Se在米上的应用.
- 一个5年和10年的模拟实验与模拟的叶子Se应用.
- 一个元分析检查了外源性Se应用对土壤微生物α-多样性的影响.
主要成果:
- 叶子Se的应用增加了谷物和土壤的Se含量,并改变了根排泄物代谢物.
- 连续的叶子Se应用降低了微生物群落的稳定性和α-多样性,特别是在高度 (≥0.4 mg·kg-1).
- 外源性Se加速了的转化,并加强了土壤脱,增加了N2O排放潜力.
结论:
- 长期的叶子Se应用会增加土壤Se水平,但会对土壤微生物多样性和稳定性产生负面影响.
- 由于Se的应用,增强的脱和加速的转化可能对可持续农业有害.
- 的应用形式很重要;复合肥可以通过降低的生物可用性来减轻负面影响.
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