营林拖拉机在我国是个缼腿,仍处于空白。林业生产中的人工林抚育,山地造林、整地、伐区剩余物收集苗圃等多种作业,都急需专用机械设备。特别是营林抚育伐的集材作业,对专用机械的要求更为迫切。目前,大量的人工林已郁闭成林。据统计,仅伊春地区基本成林的林地达六百万亩,天然更新的林地(包括天然幼壮林) Silviculture tractor in our country is a kick, still in blank. Forestry production in plantation tending, reforestation, land preparation, cutting area collection of nursery residues and other operations, are in urgent need of special machinery and equipment. In particular, lumbering in the tending of lumbering operations is even more urgent for specialized machinery. At present, a large number of plantations have closed forests. According to statistics, only the basic forests in Yichun reach 6 million mu, natural regeneration of woodland (including natural juvenile forests)