Abstract: The experiments on sowing time and planting density of soybean were conducted in 2003 and 2004 to investigate the suitable sowing time and planting density of new soybean varieties in Heilongjiang Province.The results showed that the suitable sowing time for main cultivated new soybean varieties in Heilongjiang Province was in the last ten days of April.The planting density for new soybean varieties Hefeng 45 and Hefeng 47 and was about 250,000 plant/ha and for Hefu 93154-2 between 250,000 and 350,000 plant/ha.

Key words: New soybean variety, New soybean variety, Suitable Sowing time, Suitable planting density