叶子空气温度差作为马水状态的可靠指标
Peng Liu1, Ting Guan1, Mingshou Fan1
1College of Agronomy, Inner Mongolia Agricultural University, Hohhot, China.
Frontiers in plant science
|September 17, 2025
概括
叶子-空气温度差 (LAD) 有效地监测干旱地区的土豆水的状况. 第四个叶子位置 (L4) 对于这种精确的灌技术是最佳的,提高了用水效率.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 水资源管理 水资源管理
背景情况:
- 精确的灌对于水资源稀缺的半干旱地区的土豆 (Solanum tuberosum L.) 生产至关重要.
- 需要实时的,非破坏性的方法来评估植物水的状态,以实现有效的灌管理.
研究的目的:
- 调查使用叶子-空气温度差 (LAD) 作为诊断土豆水状况的指标的可行性.
- 为了确定在土豆中进行LAD测量的最佳叶子位置.
主要方法:
- 一个实地实验评估了LAD在三个叶子位置 (L1,L4,L8) 在五个灌水平 (0-300毫米) 在不同的生长阶段.
- 分析了LAD,灌水平,植物含水量 (PWC) 和土壤水分之间的相关性.
主要成果:
- LAD与灌水平,PWC和土壤水分有显著的相关性.
- 从顶部开始的第四张叶子 (L4) 显示出最强的关系和对水状况的最高灵敏度,变化最小.
- 确定了一个LAD门,超出这个门后,收益率不会进一步提高.
结论:
- LAD是监测土豆水的可靠指标,特别是在L4位置.
- 这种方法支持精密灌,提高用水效率和在半干旱环境中可持续的土豆生产.
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