基于冠层温度的夏玉米水分胁迫指数模型的试验研究

Crop water stress index model for monitoring summer maize water stress based on canopy surface temperature

探讨并建立了适合于中国华北地区夏玉米水分状况监测的作物水分胁迫指数(CWSI)模型。通过不同的田间试验处理和观测,得到了适合夏玉米的CWSI经验模型中的经验关系,且表现明显。该研究建立了不同生育阶段的经验模型,经过初步的检验和分析,认为这一模型是合理的,可以应用于田间的基于冠层温度信息的夏玉米水分状况监测。

The crop water stress index （CWSI） model for monitoring summer maize water stress in North China Plain （NCP） was set up in this paper. Through diverse experiments and precise scientific observation, test results showed that the non-water-stress-baselines for summer maize in NCP were proved to be credible during different growth periods. Primary analysis and validation showed that the model was reasonable, and it could be applied to monitor summer maize water stress.