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中文摘要：
采用FAO Penman-Monteith公式和水量平衡法对辽西半干旱区玉米、大豆单作和间作模式的耗水规律进行了研究。结果表明,全生育期玉米/大豆间作的农田实际蒸散量比玉米、大豆单作分别低15.37 mm和29mm,水分亏缺量分别比大豆、玉米单作低45.54 mm和5.68 mm,间作群体作物系数为0.82,介于单作玉米（0.81）和单作大豆（0.83）之间。此外间作模式作物需水量与降水量的吻合程度好于单作。
英文摘要：
The laws of water consumption of corn and soybean were studied through the FAO Penman-Monteith method and the water balance method on the semiarid region of western Liaoning Province.Compared with that in corn monocropping and soybean monocroppiing,the actual evapotranspiration in intercropping system is 15.37 mm and 29 mm lower respectively in the whole growth period,while the quantity of water deficit is 45.54 mm and 5.68 mm less.The crop coefficient of intercropping system lies between corn monocropping and soybean monocropping,in addition,its degree of agreement between water demand and level of precipitation is better.
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