在毛主席革命路线指引下,北镇县苗圃广大职工在学习北京市东北旺苗圃的起大苗犁革新经验的基础上,结合我省实际情况,研制出一种适合中型轮式拖拉机侧悬挂的起大苗犁。该起苗犁经多点反复试用,经有关部门进行现场鉴定,认为该起大苗犁具有结构简单,用料少,造价低,生产效率高,作业质量好等特点(图1)。可以进行小批生产、推广应用;同时这个事实也有力地批判了林彪和孔老二鼓吹的“上智下愚”的反动谬论,说明了群众是真正的英雄。一、用途及适用范围起大苗犁主要适合于起林业苗圃培育的2-3年生、地径为6厘米左右的大树苗,也可用于起地瓜 Under the guidance of Chairman Mao’s revolutionary line, a large number of workers in Beizhen County Nursery nursery in Beijing to learn from the Northeast seedlings plow new experience, based on the actual situation in our province, developed a suitable medium-sized wheeled tractor side hanging up Big seed plow. The plots plow by repeated trial, by the relevant departments on-site identification, that the big plow with simple structure, less materials, low cost, high efficiency, good job quality and other characteristics (Figure 1). It can also be used for small-batch production and popularization and application. At the same time, this fact also strongly criticizes the reactionary fallacies of “wisdom, wisdom and wisdom” advocated by Lin Biao and Kong Laixi and shows that the masses are the real heroes. First, the use and scope of application Big seedling plow is mainly suitable for forestry nursery 2-3 years of cultivation, diameter of about 6 cm large saplings, can also be used for starting sweet potatoes