本文从分析遥感光谱参数的生物学意义着手，论证了正确建立遥感估产模型的可能途径。对几种有代表性的遥感估产模型作了分析，作者认为把可见光、近红外波段的遥感信息与热红外信息有机结合是解决遥感估产模型的最佳方案。对ＮＯＡＡ－ＡＶＨＲＲ的第１通道与第２通道光谱数值进行非朗伯体特性的纠正是必要的。遥感估产模型不仅可以使估产的空间尺度大大缩小而且参数数目亦可大大减小，更有利于实际运行。

Based on the analysis of biophysical meaning of spectral parameters,this paper discussed the possible correct way to establish the remote sensing modelfor crop yield estimation. Authors believe that it is the best way to solve this problem by combining info-rmation contained in visible band, near-infrared band and thermoinfrared band data.Results show that it is a necessary step to eliminate non-Lambert effects of targetsbefore AVHRR channel 1 and channel 2 data to be used.The space scale and thenumber of parameters of crop yield estimation will be reduced,if remote sensingmodel for crop yield estimation is successful.It means remote sensing model will bemore practical than other models.