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。
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.
出处
《干旱地区农业研究》
CSCD
北大核心
2010年第5期43-46,共4页
Agricultural Research in the Arid Areas
基金
"十一五"国家科技支撑计划项目(2006BAD29B06)
农业部948项目(2006-G52A-Q01)
辽宁省科技攻关课题(2007212001
2008212002)
国家公益性行业(农业)科研专项经费(200803028)
关键词
单作
间作
玉米
大豆
耗水规律
monocropping
intercropping
corn
soybean
laws of water consumption
