在长期不同的作物旋转模式下,土壤有机碳及其成分的特性
Xingzhe Zhang1, Chunguang Liu1, Baicheng Wang1
1Mudanjiang Branch, Heilongjiang Academy of Agricultural Sciences, Mudanjiang, China.
PloS one
|November 21, 2025
概括
农作物旋转改善了土壤结构和聚合物稳定性,提高了土壤的健康. 然而,它对土壤整体有机碳和储存的影响很小.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 土壤有机碳 (SOC) 和对于土壤的健康和肥力至关重要.
- 了解不同作物旋转系统对土壤特性的影响对于可持续农业至关重要.
研究的目的:
- 研究各种作物旋转模式对土壤有机碳,其组成部分及其土壤聚合物稳定性的影响.
- 分析土壤有机碳,活性碳,总和土壤聚合物之间的关系.
主要方法:
- 建立了四种治疗方法:连续玉米,连续大豆,玉米-大豆旋转和玉米-大豆-土豆旋转.
- 分析重点是0-50厘米的土壤层,检查土壤有机碳,活性碳,总和土壤聚合物.
主要成果:
- 玉米-大豆-土豆旋转显著提高了土壤聚合物的稳定性,与连续作物相比,水稳定聚合物 (>0.25毫米) 增加了23.8%-66.3%.
- 与连续作物相比,作物轮换增加了土壤结构指数 (最大99.60) 和容易氧化碳含量 (增加了31.8%).
- 连续种植玉米产生的有机碳总和总含量最高.
结论:
- 农作物旋转有效地改善了土壤结构和聚合物稳定性.
- 虽然对土壤的物理性质有好处,但作物旋转对土壤碳和储存的影响有限.
相关概念视频
01:14The Carbon Cycle
43.1K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
43.1K
02:23The Soil Ecosystem
24.4K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
24.4K