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一、基本原理在栽培条件大致相同的情况下,一地区大范围数县,甚至数十县作物产量的高低,主要是作物生育期间的各种农业天气作用的结果,而某种天气的发生、发展和消亡,与大气环流形势有密切的联系,不同环流类型对应各种不同的天气系统,产生不同的天气过程和天气现象,从而对作物生长发育、产量形成发生影响。因此,用大气环流作农作物生育期间农业气象条件的鉴定和产量预报,比只考虑单一农业气象要素作产量预报更全面、更客观。大气环流可以表征各种
First, the basic principles Under the same cultivation conditions, the number of large counties in a region, or even dozens of county crop output level, mainly crop during the various agricultural weather results, and some weather occurs, Development and demise, and the general situation of atmospheric circulation are closely linked, different types of circulation corresponding to a variety of different weather systems, resulting in different weather processes and weather phenomena, thus affecting the crop growth and yield formation. Therefore, the appraisal and yield forecast of agrometeorological conditions during crop growth by using atmospheric circulation are more comprehensive and objective than forecasting the yield of single agrometeorological elements. Atmospheric circulation can characterize a variety of