通过在两个县麦田和校试验地共29个样点的光谱反射率测定,结合小麦生育状况和籽粒产量分析,可以看到小麦具有和其它绿色植物一样的光谱反射率特征,但也有自己本身值域。而在小麦不同发育期内又有它一定的变化规律,其中以抽穗期反射率为最高。从对不同波段反应上看第一波段(兰光)和第四波段(红外)与产量相关最为密切,经过对不同波段资料处理和运用积分回归技术我们得到了小麦光谱特性与估产模式。 By measuring the spectral reflectance of 29 samples in wheat field and school in two counties, combining with the fertility status and grain yield of wheat, we can see that wheat has the same spectral reflectance characteristics as other green plants, but also has its own range. In the different developmental stages of wheat, however, it has some changes, of which the reflectivity at heading stage is the highest. The first band (blue light) and the fourth band (infrared) are most closely related to the yield from the responses of different bands. Through the data processing of different bands and using the integral regression technique, we obtain the spectral characteristics and estimation model of wheat.