【摘 要】
：
阴山丘陵旱农区总耕地面积约为2工00万亩,年降水量250～410mm,属半干旱偏旱区。历年粮食亩产波动在60公斤左右,农业生产的波动与农业生态环境条件严峻有密切相关。“七五”期
【机 构】
：
内蒙古农科院土肥所,内蒙古农科院土肥所,内蒙古农科院土肥所,内蒙古农科院土肥所,
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阴山丘陵旱农区总耕地面积约为2工00万亩,年降水量250～410mm,属半干旱偏旱区。历年粮食亩产波动在60公斤左右,农业生产的波动与农业生态环境条件严峻有密切相关。“七五”期间的多点调查与研究表明:旱、瘠、沙、触、粗是障碍农业生产持续发展的重要限制因素,其中干旱、地力瘠
Yinshan hills arid area total cultivated area of about 2 workers 00 mu, annual precipitation 250 ~ 410mm, is a semi-arid dry land. The fluctuation of grain yield per mu over the previous years is about 60 kg. The fluctuation of agricultural production is closely related to the harsh agricultural ecological environment. The investigation and research during the “Seventh Five-Year Plan” period showed that drought, barren, sand, touch and crude are the important limiting factors to the sustainable development of agricultural production. Among them, drought,
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