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农业绿色发展 “电力能源”不可或缺

2017-12-25 14:21:56 来源:中国农机网 阅读量:47710 评论

导读:近日,农业部联合农业银行大力推进金融支持农业绿色发展工作。农业绿色发展是农业供给侧结构性改革的主攻方向,也是实施“五位一体”总体布局的具体体现。

  【中国农机网 本站原创】近日,农业部联合农业银行大力推进金融支持农业绿色发展工作。农业绿色发展是农业供给侧结构性改革的主攻方向,也是实施“五位一体”总体布局的具体体现。
 
  《通知》要求,各级农业部门和农业银行要以深化农业供给侧结构性改革为主线,尊重农业发展规律和市场经济规律,坚持政府引导、市场运作,以农业基础设施建设、农业科技创新、农业结构调整、农业面源污染治理为重点,加大信贷投放力度,支持一批符合农业绿色发展要求的企业项目。
 
  因此,绿色农业在科学合理的使用水和土地等环境资源的同时,对于农业机械的动力使用也将是企业绿色发展的方向。
 

  电能对绿色农业“大有裨益”
 
  现代农业机械动力的来源主要是柴油、汽油,即使是在国三取代国二,国四大力研发适应的行业市场要求下,电力能源相比之下可以算是一种比较绿色的动力来源了。
 
  有人说,以电为能源在机械的使用中,没有柴油、汽油为能源的机械功率大。就如,在植保无人机市场中,存在电能、燃油两种动力来源。一直以来,这两种动力的植保无人机都在“battle”,电力载药少、续航短;燃油成本高、不环保等等。
 
  但在我国机车的应用中,电动机车毫不逊色于内燃机车。不管是内燃机车还是电力机车,都要靠牵引电机来驱动火车行使。我国的机车技术在世界上还是比较先进的,一台内燃机运行时可以拖动几百到几千吨的火车。但由于内燃机车柴油机的功率限制,而电力机车本身不带原动机,装有大功率变压器和牵引电机,靠接受接触网送来的电流作为能源,所以电力机车具有功率大、热效率高、速度快、过载能力强和运行可靠等主要优点,而且不污染环境。因此,电能完全可以作为一种绿色能源应用于农业机械。
 
  电能在农业中“崭露头角”
 
  农业绿色发展,除了对农业本身的绿色保护之外,在农业机械的使用上也需要绿色发展。如,在科学施用化肥、飞防洒药、灌溉等这些农业绿色作业实施的过程中,对于农业作业机械的推广应用也应该符合绿色农业发展的要求,而农业部与中国农业银行联合的首要目的就是要以金融的方式支持这些绿色企业。
 
  粮食烘干机对于农业来说,可谓是农民摆脱看天晒粮的重要“帮手”。我国每年因霉变造成的粮食产后损失高达2100万吨,占全国粮食总产量的4.2%左右,发展粮食烘干迫在眉睫。专家预测,未来10年,烘干机有望迎来快速发展的黄金时期。但是,在绿色农业发展的大方向下,农业烘干机在多样性发展的同时急需一种绿色的动力能源相配。近日,“以电代煤”的空气源热泵粮食烘干机在常州地区得到运用。
 
  “以张新伢农场的3台烘干设备为例,一个丰收季共为村民们烘干粮食近500吨,燃烧标煤16吨,煤炭开销约1.5万余元,值守加煤人工成本近万元,共计2万余元。而采用空气源热泵电烘干技术,按农业生产电价0.52元计算,24小时烘干一仓粮食预计用电860度,成本约430元。一季烘干500吨粮食仅需电费8600元左右。”常州一供电所负责人这样算一笔账。
 
  采用空气源热泵机组代替燃煤、燃油热风炉,为粮食烘干塔提供热源,不仅实现污染物零排放,还比燃油和燃煤烘干节能50%以上。这既保障了粮食品质,又促进了农户节本增收、绿色发展。
 
  结语
 
  现代农业机械电力驱动的发展趋势是力求简化传动结构,使电动机尽量接近工作机构,或在可能条件下将二者结合在一起,以提高机组的使用可靠性和适应工艺过程自动化的要求。
 
  从许多国家在农业中应用电能的历史看,发展的过程是从解决照明用电和个别繁重作业的电气化开始,逐步过渡到实现生产工艺过程的综合电气机械化和推广应用自动控制技术,进而发展到应用电能实现工业化的生产方式,组织专业化的农牧业生产,以大幅度提高农产品的产量和质量,减少劳动消耗,从而获得更高的综合经济效益。在美国、联邦德国等国家,每个农业劳动力每年的平均用电量可高达3500~4500千瓦小时。
 
  此外,发展适于在农业环境条件下使用的电动机、控制保护电器和成套装置系列也很受重视。
 
  中国农机网(www.nongjx.com)原创,转载请注明出处。
 
  参考资料 : 农业部,中国江苏网,互动百科
 
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