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国外农业机械技术发展的主要趋向,和工业、交通等部门一样,中心是围绕提高劳动生产率,从而获得更大的经济效益和利润. 劳动生产率是由一个劳动力单位时间所生产的产品数量来决定的.国外经济发达的资本主义国家的农业劳动生产率达到了高水平.以美国为例,1976年全国农业劳动力约400万人,约占总人口的2%,占总劳力的5%.1976年平均每个农业劳动力一年共提供了粮食23.4万斤、皮棉1千多斤、肉类2万多斤、蛋
The main trend of foreign agricultural machinery technology development, and industry, transportation and other departments, the center is around to improve labor productivity, so as to obtain greater economic benefits and profits. Labor productivity is determined by the number of products produced by a unit of labor per unit time In the developed capitalist countries, the agricultural labor productivity reached a high level. In the United States, for example, about 4 million agricultural laborers nationwide accounted for about 2% of the total population in 1976, accounting for 5% of the total labor force. Each agricultural laborer provides a total of 234,000 tons of grain a year, more than 1,000 kg of lint, more than 20,000 kg of meat and eggs