【摘要】 根据生产实际，规定了大白菜受冻害的气象条件，利用５００ｈＰａ候平均高度资料，分析大白菜产生冻害的同期环流和前期环流形势，找出关键区指标，建立了１１月第３候、４候大白菜有无冻害的预报方程更多还原

【Abstract】 In view of the production practics,the meteorological condition that Chinese cabbage is frozen has been decided.Using 500hPa data of the pentad average height,the circulation pattern before and during the Chinese cabbage frozen has been analysed.The key regions indicator has been given,and the forecast equation in relation to the Chinese cabbage frozen damage and the third and fourth pentad in November has been established.更多还原