Abstract: 1}he analysis to 9} hybrid corns in Henan and 86 in Liaoning province in regional experiments showed as follows, (1)The average yields of hybrid corn between Henan and Liaoning province were almost same, but the average value of ear length, ear diameter，weight per 1000 kernels，row number per ear, and length of seedless pe.r ear in Liaoning province was higher 10 percent than in Henan province;(2)'rhe ear一hernal structural character of high yielding hybrid corn was the mid-ear-type vrhich had larger ear diameter, more row numbers per ear and higher 4veight per 1000 lcernals in Henan and the big ear type of hybrid had a longer ear, more ro\、numbers per ear and high rate of grain yieid in liaoning;(J)1'he differences of ear一kernal characters of hybrid corn between two provinces were due to ecological and meteorological factors,

Key words: Corn, Ear-kernal character, Ecological district, Moteorologic factor