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Soil Moisture Dynamics and Moisture Effect of Ground Film in Early Hdrvested Potato Field
Authors
徐学选
李鼎新
陈国良
Publication date
1 January 1996
Publisher
Abstract
对宁南干旱山区早熟丰产马铃薯农田土壤水分的研究结果表明:马铃薯农田土壤水分动态变化可以分为三个活动时期,它与区域的降雨和分配有极强的相似性。土壤水分垂直变化规作可以分为速变层(0~2Ocm),缓变层(20~120cm)和相对稳定层(120~200cm)。并研究了各个层间的水分的关系。早熟丰产马铃薯的耗水量约为312~394mm。前期主要来自灌水补充的底墒,后期来自降雨。地膜覆盖技术比露地更能够有效地减少水分蒸发,水分生产率高,在干旱山区发展集水窑窖灌溉结合地膜技术推广早熟马铃薯,提高商品率,增加收入,前景广阔
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018