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近年来,随着农机系统的广泛宣传和国家农机购置补贴政策的实施,玉米机械化收获技术得以迅速发展,玉米机收面积逐年大幅增加。据统计,截止到2008年底,全国玉米收获机保有量达3万多台,玉米机收面积达186万hm2,玉米机收面积占种植面积2334.37万hm2的8%左右。目前,全国生产玉米收获机的厂家有60多家,100余个品种,在这众多的品种当中质量和作业性能参次不齐,再加上不同地区的农艺要求各不相同,
In recent years, with the extensive publicity of the agricultural machinery system and the implementation of the national agricultural machinery purchase subsidy policy, the mechanized harvesting technology of corn has been rapidly developed. The area of corn machine harvesting has increased substantially year by year. According to statistics, by the end of 2008, the number of corn harvesters in the country had reached more than 30,000, the area harvested by corn reached 1.86 million hm2, and the area harvested by corn accounted for about 8% of the planting area of 23,343,700 hm2. At present, there are more than 60 manufacturers and more than 100 varieties of corn harvesters in the country. Among these varieties, the quality and work performance are of different order. In addition, the agronomic requirements in different regions are different,