Abstract: Taking soybean variety ‘youchun 1204’（authorized in 2017） as the test material, a two-factor experiment with split plot design was conducted, one factor is sowing date, with 3 levels of May 18th, May 25th and June 1th; another factor is sowing density, with 3 levels of 400 thousand plants/hm², 250 thousand plants/hm² and 200 thousand plants/hm². The results showed that, the difference in soybean yield was extremely significant between different sowing date processing; the difference in soybean yield was extremely significant between different seedling density processing; but the interaction between sowing date and density had no significant effect on the yield difference of soybean variety ‘youchun 1204’. The best combination of sowing date and planting density in Jinmenwas was May 18^th and 250 thousand plants/hm².

Key words: soybean（Glycine max）, Youchun 1204, sowing date, planting density, yield