不同灌方法对土壤温度的空间和时间分布的影响
Hong Chen1, Wenxin Liu1, Guodong Wang2
1School of Resources and Environment, Yili Normal University, Yining, China.
PloS one
|September 18, 2025
概括
与洪水灌相比,滴灌显著增加了土壤温度,并优化了作物根的热水条件. 这项为期五年的中国西北地区研究强调了滴灌方式.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- 滴灌方式提供精确的供水,影响土壤的热水系统.
- 有限的长期研究比较了滴灌和洪水灌对中国西北部土壤温度的影响.
- 了解节水灌对土壤温度的影响对于干旱地区至关重要.
研究的目的:
- 综合评估滴灌与洪水灌对土壤温度的长期影响.
- 为了研究在玉米生长的不同深度和位置的土壤温度变化.
- 阐明灌方法对中国西北地区土壤热水条件的影响.
主要方法:
- 一个为期五年的实地实验 (2017-2021),比较滴灌和洪水灌.
- 在多个深度 (0-90厘米) 和位置 (滴水源,根区,行间缓冲区) 监测土壤温度.
- 分析土壤温度,气象温度和土壤深度之间的相关性.
主要成果:
- 土壤温度与气象温度有显著的正相关性,特别是在地面.
- 与洪水灌相比,滴滴灌使土壤温度增加了1.4%.
- 土壤温度随着土壤深度的增加而显著下降,根区从滴水灌中受益最多.
结论:
- 滴灌提高了土壤温度,并优化了水热条件,以促进玉米的根部发育.
- 这项研究提供了关键的多年,多深度和多位置数据,关于干旱环境中的灌影响.
- 这些发现为改善水资源利用效率和可持续农业水资源管理在水资源稀缺地区提供了理论框架.
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