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旱地农业也称为雨养农业,是指水资源不丰富,或利用有困难的情况下,完全依靠自然降水从事农业生产。也就是不靠灌溉,而是利用生物和工程措施,充分提高自然降水的生产效率,达到稳产、高产目的的一种农业生产方式,它并不是非灌溉农业的总称。一般仅指年降水量250到750毫米的半干旱和半湿润易旱地区。年降水量超过800毫米以上属于湿润地区,水分比较充足,从事农业一般没有干旱威胁。这类地区的雨养农
Dryland farming, also known as rainfed agriculture, refers to agricultural production that relies solely on natural precipitation for lack of water resources or under difficult circumstances. That is, it is not a general term for non-irrigated agriculture. Instead, it uses biological and engineering measures to fully raise the productivity of natural precipitation and achieve a steady agricultural and high-yielding agricultural production. Generally only refers to the semi-arid and semi-humid dry areas with annual rainfall of 250 to 750 mm. Annual precipitation of more than 800 mm wet areas are more adequate moisture in agriculture is generally no threat of drought. Rain-fed farmers in these areas