不同的气应用和草回收深度对草微生物和碳和气循环在冷区的田的影响
Lin Liu1,2, Ming Cheng1, Jingyi Jin3
1School of Agriculture, Yanbian University, Yanji, 133002, China.
Scientific reports
|March 18, 2024
概括
在中国东北地区优化气应用和草回收深度,增强了土壤有机物质. 130公斤N/hm2和0-15厘米深度的速度最大限度地提高了微生物活动和营养循环.
科学领域:
- 土壤科学 土壤科学
- 微生物学 微生物学
- 生物地质化学生物地质化学
背景情况:
- 草回归对于凉爽地区的土壤丰富至关重要.
- 对于草分解和营养循环的最佳 (N) 率和深度仍然不清楚.
- 了解微生物对草返回的反应对于可持续农业至关重要.
研究的目的:
- 为了研究不同的应用速度和深度对草分解微生物的影响.
- 为了分析碳和循环在全吸管回归下对碳和的影响.
- 在中国东北部的田中确定微生物社区结构和功能的最佳条件.
主要方法:
- 宏基因组测序技术被用来评估微生物群落.
- 实验涉及五种的应用速度 (110150公斤N/hm2) 和两个深度 (015厘米,1530厘米).
- 分析的重点是参与碳和循环途径的功能基因.
主要成果:
- 大约150个功能性基因参与了草碳降解,甲生产和酸循环路径显示出高丰度.
- 在循环中发现了22个功能性基因,其中固定的途径最多样化.
- 在015厘米深处,以130公斤N/hm2的气应用促进了吸管降解微生物和循环功能基因的最高丰度,而高气 (150公斤N/hm2) 抑制了这些过程.
结论:
- 的应用速度和深度在草分解过程中显著影响微生物群落结构和功能.
- 增强微生物活动和营养循环的最佳条件是在130公斤N/hm2和0.15厘米深度下观察到的.
- 深度依赖的微生物异质性随着吸管回归深度的增加而减少,影响了循环功能.
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