The testing results of straw cutting and field experiment show that this mechanism has excellent anti-blocking capability . ( 2 ) a new no-till planter equipped with the strip chopping anti-blocking mechanism was developed . compared with other no-till planters, it possesses higher anti-blocking capability and suits the need of seeding in huabei plain where the winter wheat-summer corn continuous double cropping system gives much straw and short planting season (2)研制出新一代玉米免耕播种机,配以新型防堵机构,防堵性能优越,连续三年分别对三代样机进行的田间试验表明,可在地表整秆覆盖量10t/ha的条件下连续作业而不堵塞,该播种机的防堵性能好。