水稻水培盆栽试验结果表明，不同钾营养水平水稻的冠层光谱和叶片光谱反射率，从可见光至中红外均存在着有规律和显著的差异，这就使利用冠层和叶片光谱分析来诊断水稻钾营养水平及估测含量有了可能，从已有的结果来看，与冠层光谱相比，叶片光谱分析在建立专一性较高的钾诊断模式上有其优势．本文还就提高光谱分析诊断水稻钾营养水平的正确性及精度的途径作了讨论 The results of hydroponics pot experiments in rice showed that there was a regular and significant difference in visible and mid-infrared spectral reflectance and spectral reflectance of rice with different levels of potassium nutrition, which made the use of canopy and leaf spectral analysis to diagnose It is possible that rice potassium nutrition level and estimated content can be obtained. From the existing results, leaf spectral analysis has its advantages in establishing a higher specificity potassium diagnostic mode than canopy spectroscopy. This paper also discussed ways to improve the accuracy and accuracy of the spectral analysis of potassium nutrition in rice