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为何越来越多的人推崇农业绿色发展机具?

2018-03-29 15:58:15 来源:中国农机网 阅读量:24244 评论

导读: “春分后十五日,斗指丁,为清明,时万物皆洁齐而清明,盖时当气清景明,万物皆显,因此得名。”清明将至,正是春耕的大好时节,俗话说“清明前后,种瓜点豆”,农民们自然不会浪费这大好春光。不过和往年有所差别,今年的田间多了许多机器的身影,这一切都得益于国家的农机购置补贴政策。

  【中国农机网 本站原创】 “春分后十五日,斗指丁,为清明,时万物皆洁齐而清明,盖时当气清景明,万物皆显,因此得名。”清明将至,正是春耕的大好时节,俗话说“清明前后,种瓜点豆”,农民们自然不会浪费这大好春光。不过和往年有所差别,今年的田间多了许多机器的身影,这一切都得益于国家的农机购置补贴政策。
 
  然而农机购置补贴也是有要求的,不久前农业部、财政部印发了《2018—2020年农机购置补贴实施指导意见》,明确要优先保证粮食等主要农产品生产所需机具和深松整地、免耕播种、植保、节水灌溉、施肥 、秸秆还田离田、残膜回收、畜禽粪污资源化利用、病死畜禽无害化处理等支持农业绿色发展机具的补贴需要,逐步将区域内保有量明显过多、技术相对落后、需求量小的机具品目剔除出补贴范围。那么,绿色农机究竟有什么魅力,能让三年农机购置补贴实施指导意见为其开路?
 

       土地问题凸显,绿色发展刻不容缓
 
  当下,中国土壤状况确实不容乐观,至少有10%的土壤基本丧失生产力。滥砍滥伐导致的水土流失荒漠化还在困扰着我们,一些城市耕地遭受镉、砷、汞等有毒重金属和石油类有机物污染,不科学的种植方式使土壤肥力持续下降......
 
  土壤养分管理国家工程实验室主任、中国科学院南京土壤研究所研究员王慎强曾展示了一组数字:中国人均耕地面积不足世界平均水平的40%,在这当中,71%是中低产田,土壤有机质仅是欧洲的三分之一到二分之一,土壤还面临酸化、盐碱化、连作障碍等一系列问题。
 
  对先污染后治理发展模式说“不”
 
  土地问题堪忧,而土壤污染的治理更是难上加难。土壤污染具有隐蔽性和滞后性,很有可能我们的行为给土壤带来了危害却不自知,等到发现污染严重的时候却已经为时尚晚;土壤污染的累积性和分布不均匀性,相比于空气和水,污染物更加难以在土壤中自动分解、稀释,随着时间的流逝,污染非但不会减轻反而会更加严重,而我国土壤种类多样,不同土壤的治理方式显然不一样,这又对治理增加了难度;而像重金属等污染物对于土壤的污染来说基本是一个不可完全逆转的过程。
 
  土壤污染一旦发生,则很难完全恢复,成本高、周期长、难度大等问题不容忽视,所以等到污染了再去治理远不如从一开始就走绿色发展道路来的靠谱。改变传统的高投入、高消耗、高污染的种植模式,走亲土种植道路。
 
  走亲土种植,实现乡村振兴
 
  所谓亲土种植,是指采取对土壤“亲和、友好”的方式来开展种植作业,实现作物高产和耕地质量提升两大目标。对于人多地少的中国而言,亲土种植兼顾了耕地质量与农业丰产。
 
  “亲土种植 富养天下——守护亿亩良田,践行乡村振兴”大型公益行动于3月26日在北京启动。会上发布了旨在推动亲土种植在中国落地的“百千亿行动”方案,并对来自全国各地的亲土种植带头人进行授牌。变革传统的种植模式,一个全新的亲土种植时代正悄然来临。
 
  随着农业现代化的不断发展,使用地膜已成为确保农业高产稳产的重要手段。但在高产的同时,连续大面积的铺膜种植,也使得“白色污染”逐年加重,严重制约了农业可持续发展。2018年阿克苏地区将在新疆天山以南地区试点残膜机械化回收作业,从现有的残膜回收机中筛选出适宜在本地区推广应用的,对其进行优化和改进,然后在下辖8县1市大规模推广使用。据悉,残膜机械化回收作业项目实施后,预计残膜的回收率将达85%以上,可使棉花增加产量10%至15%。由此可见,农业绿色发展机具在亲土种植模式上发挥着重要作用。
 
  小结
 
  “我们既要绿水青山,也要金山银山。”那么,怎么让绿水青山成为金山银山是值得我们思考的问题,先污染后治理的道路显然已经不适合我国当下的农业发展模式,未来的农业生产方式将以绿色发展为基础,逐步实现农业可持续发展。
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