关键词: 流动沙丘, 沙坡头, 流沙层, 生侧柏, 沙冬青, 引黄, 腾格, 耕作土壤, 增产效果, 对照区

Abstract: In the study,the testing results for levelling and transforming shifting sand dunes with pumping irrigation of the Yellow River water and for preventing water from infiltration with bedding plastic sheets underlying the dunes are summerized. The testing results indicate that 22 cm of topsoil is formed on surface after 15 years'irrigation. Pure sand soil is changed into arable soil by planting crop and Leguminosae spp. and by usin g fertilizers. The plastic sheets are applied for keeping good moisture in the irrigated area and per unit area yield of sobean and maize increased 277.8% and 238.4% separately. The height and diameter of seedlings of sand-holding species (Ammopitanthus mongolicum, Biota orientalis) also increased in compari-son with that in the area without any artificial measures.