大面积农作物苗情长势的气象卫星遥感统计方法研究

STATISTIC CLASSIFICATION OF THE GROWTH CONDITIONS OF LARGE AREA OF CROPS BY USING METEOROLOGICAL SATELLITE REMOTE SENSING INFORMATION

农作物苗情长势是指导农业生产、预测农作物产量的重要参考，本文研究利用气象卫星绿度值资料统计农作物三类苗情的技术方法。首先根据１９８６—１９９４年地面苗情观测资料分析了淮北平原小麦苗情的统计特征，提出４条假设，以此４条假设作为苗情统计方程的边界条件，并结合其它订正条件对绿度值进行聚类分析，获得各地作物苗情的判别标准。

The situations of crop growth is a very important reference in guiding agricultural production and forcasting crop yield .This paper give a method of classification of the growth conditions of large area by using green degree values from meteorological satellite. Firstly, based on the investigations of the growth situations of winter wheats and their distribution in Huaibei from 1986 to 1994, four hypothesises were set up.Secondly the hypothesises were used as initial conditions of classification.Combined with other modifying conditions a cluster anlysis was made on green degree value to obtain a judging basis of the growth condition of crops everywhere.Thus the picture of three kinds of crop conditions drawn up.