施肥对小麦冠层温度的影响及其与生物学性状的关联

利用红外测温仪等研究了不同施肥处理对小麦冠层温度的影响。结果表明 :不同施肥处理可改变小麦基因型的冠层温度 ,对于同一基因型品种 ,养分胁迫越严重 ,冠层温度越高 ;籽粒灌浆期旗叶叶绿素含量、可溶性蛋白质含量、蒸腾速率、净光合速率及一些农艺性状与冠层温度呈显著负相关。这表明 ,优良的生物学性状和较低的冠层温度相联系 ,冠层温度的高低可能成为反映水、肥等栽培措施是否科学合理的便捷而较准确的指标

Effect of fertilization on the canopy temperature of winter wheat and its relationship with biological characteristics

Remotely sensing infrared canopy temperature is an efficient way to rapidly and non-destructively monitor the whole-plant response to water stress. It has often been used as a screening tool to select genotypes with drought and heat tolerance. It is reported that the drought-stressed plants show higher canopy temperature than the well-watered plants at both the vegetative- and anthesis growth stages. However, there is little information available about the effects of nutrient stress on the canopy temperatu...