Northeast rice field rotation tillage method

The invention provides a northeast rice field rotation tillage method and relates to the technical field of crop plantation. Three years is one circle. The method comprises steps that 1), rice harvestof the first year is performed, all the rice straws are thrown onto the ground, and plowing is performed; 2), in the middle and early days of the May of a second year, non-driven pulping and transplanting on the land after plowing are performed; 3), rice harvest of the second year is performed, all the rice straws are thrown onto the ground, and rotary tillage is performed; and 4), in the middleand early days of the May of a third year, non-driven pulping and transplanting on the land after plowing are performed. The method is advantaged in that complete return of the rice straws to the field is realized, compared with a comparative example, the effective phosphorus content of the soil of the 0-30cm deep plough layer is increased by 5.1-8.7%, the alkali-hydrolyzale nitrogen content is increased by 0.6-2.7%, the c