农作物长势的定义与遥感监测

监测作物生长过程的状况与趋势，即长势监测是农业遥感更为重要的任务。其目的是：１）为田间管理提供及时的信息；２）早期估计产量。该文以冬小麦为例，根据实地调查与北方数省的资料，用作物的个体与群体特征定义作物长势，讨论了遥感监测的可能性，提出了基于植被指数与植被表面温度的长势遥感监测的评估模型与诊断模型的概念与算法。

Definition of Crop Condition and Crop Monitoring Using Remote Sensing

Crop condition monitoring should be paid more attention. The objectives of crop condition monitoring are to supply timely and sufficient information for crop management, and early yield forecasting. A definition of crop condition can be defined by its individualities and group characteristics. Two models were developed for crop condition assessment and diagnosis based on vegetation index and crop surface temperature.