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旱作农业是在水资源严重短缺条件下,通过旱地农业结构和一系列旱作技术措施,不断提高地力和天然降水的有效利用率,靠充分利用天然降水实现农业稳产和平衡增产,使农林牧等综合开发的农业。具体而言就是在干旱、半干旱和半湿润易旱等地区,即在年降水量250~800毫米之间的地区,不靠灌溉而采用一系列抗旱农业技术进行生产的雨养农业。我国的旱作农业地区范围很大,约占国土陆地面积的56%,全国耕地的60%以上为旱地,因此,旱作农业的丰歉,与农业生产水平的提高和未来粮食安全有密切的关系。2014年,甘肃省全年推广全膜双垄沟播技术面
Under dryland water shortage, drought-fed agriculture, through dry farming and a series of technical measures for dry farming, continuously improve the effective utilization of soil fertility and natural precipitation, and make full use of natural precipitation to achieve stable agricultural production and balanced production, Comprehensive development of agriculture. More specifically, it refers to the rain-fed agriculture that is produced by a series of drought-resistant agricultural technologies without irrigating in areas such as arid, semi-arid and semi-humid drought, that is, between 250 and 800 millimeters of annual precipitation. The area of dry farming in our country is very large, accounting for about 56% of the land area of land and land, and more than 60% of the country’s arable land is dry land. Therefore, the apology and drought of dry farming is closely related to the improvement of agricultural production and future food security relationship. In 2014, Gansu Province promoted full-film double-ridge furrow sowing technology surface throughout the year