Abstract: According to the sowing and cultivating models of Heilongjiang at the momment, their effects on soybean yield was studied . Three cultivation model were adopted on the basis of three ridge cultivation : the ordinary ridge ,45cm ridge after narrow row solid –seeding , mulching on row-row of ordinary ridge , big area contrast was adopted on the the trail design .the results was :the best one is 45cm ridge after narrow row solid-seeding ,the next one is mulching on row-row of ordinary ridge.