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国外耕地机械发展概况,已有许多杂志和资料作过详细介绍。由于篇幅有限,这里仅谈谈黑龙江垦区的耕地机械的现状和展望。一、现状1.机引铧式犁是主要的耕地机械:垦区各农场的 L—5—35机引五铧犁是从苏联引进的二十年代产品,形式陈旧,性能落后。已远远不能满足田间作业要求。其主要缺点是阻力大、金属用量多、保养费事。又因垦区土壤比阻较大,中型车只能拉
Foreign development of arable land machinery, there are many magazines and information have been introduced in detail. Due to limited space, here only to talk about the current situation and prospects of cultivated land machinery in Heilongjiang Reclamation. First, the status quo 1. Machine plow-type plow is the main arable land machinery: reclamation of the farm L-5-35 machine cited five plow is imported from the Soviet Union in the twenties products, the old form, performance behind. Has far can not meet the requirements of field operations. The main drawback is the large resistance, the amount of metal, maintenance costs. Because of reclamation area soil resistance than large, medium-sized car can only pull