辽宁省北镇县国营苗圃职工于1959年10月在原有 U 型起苗犂的基础上改进成功了果树起苗犂。这种起苗犁供起果树苗木或其它林木苗木用,它的前梁和后梁在工作时距地面高1米,前边不用大拉杆,苗干在中间通行时,不致将苗木碰断和碰破树皮,起苗深度最大可达30厘米,碎土作用良好,起下的苗子几乎都是 North County, Liaoning Province, state-owned nursery workers in October 1959 in the original U-shaped seedling plow improved on the successful fruit tree plow. This seedling plow for the fruit trees and other seedlings or seedlings, its front beam and back beam at work from the ground 1 meter high, without a large front bar, dry seedlings in the middle of the passage, will not breach and touch broken seedlings Bark, seedling depth up to 30 cm, the role of soil good, almost all of the seedlings from