1 水田使用大型机械的弊端目前大部或绝大部分水田承包户(以经营规模13.33公顷为例)均以大中型农业机械为主。几年的生产实践表明,使用大、中型农业机械翻地、整地、收割,其经济性、灵活性、及时性等都存在问题。 1.1 收获损失大就现有的收割机技术状态收割水稻,调查为每公顷损失最低15%以 1 Paddy Field Disadvantages of Using Large Machinery At present, most or most of paddy field contractors (with a management scale of 13.33 hectares) are mainly large and medium-sized agricultural machinery. Years of production practice shows that the use of large and medium-sized farm machinery turning the ground, cutting, harvesting, its economy, flexibility, timeliness and so there are problems. 1.1 Harvesting losses Harvesting of existing harvesting harvesters Technical conditions Rice is surveyed at a minimum loss of 15% per hectare