Yield Component Characteristic of the Spring Maize with Super-high Yield

Through 2 years of field experiments,the path analysis of yield components in the maize at the different yield levels was studied in Jinsha township of Huadian city,Jilin province.The results showed that the sequence of direct path coefficient of low yield was spike number 1 000-grain weight grain number per hectare,which indicated that spike number in yield component factors of low-productive was the most important factor influencing the grain yield,followed by 1000-grain weight,and grain number per hectare had the least influence.The sequence of direct path coefficient of high yield was grain number per hectare 1 000-grain weight spike number,which indicated that grain number per hectare in yield component factors of high-productive was the most important factor influencing the grain yield,followed by 1 000-grain weight,and spike number had the least influence.And the sequence of direct path coefficient of super-high-yield was the grain number per hectare spike number 1 000-grain weight,which indicated that grain number per hectare in yield component factors of super-high-yield was the most important factor influencing the grain yield,followed by spike number,and 1 000-grain weight had the least influence.