河套灌区套种模式下田间灌水有效性评价  

Availability of Field Irrigation Water Under Intercropping Mode in Hetao Irrigation Area

作　　者：贾锦凤[1] 史海滨[1] 刘瑞敏[1] 王淑梅 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,内蒙古呼和浩特010018 [2]呼伦贝尔兴水公司,内蒙古呼伦贝尔021000

出　　处：《人民黄河》2012年第2期93-96,共4页Yellow River

基　　金：国家自然科学基金资助项目(50769004);"十一五"国家科技支撑计划项目(2007BAD88B04)

摘　　要：针对河套灌区典型的套种模式以及地下水位较浅的情况,基于SPAC系统应用土壤水动力学理论定量分析了作物生育期内大气水、灌溉水、作物水、土壤水和地下水的相互转化关系。应用FAO推荐的Penman-Monteith法及双作物系数法,对小麦套种玉米、小麦套种向日葵模式的实际腾发量进行了计算。从动态观点出发,在时间尺度上考虑深层渗漏量和根系层储水量对作物的有效性,对灌区田间灌溉水的有效性进行了评价。结果表明:小麦套种玉米的实际腾发量为635.8 mm,小麦套种向日葵的实际腾发量为428.2 mm;小麦套种玉米灌溉水利用率为91.9%,小麦套种向日葵的灌水利用效率为88.4%。For the typical intercropping mode and the unique situation of shallow groundwater level in Hetao Irrigation Area, by using the theory of soil water dynamics at the base of SPAC system, this paper quantitatively analyzed interchangeable relations of atmospheric water, irrigation water, crop water, soil water and groundwater during crop growth period, then calculate the actual evapotranspiration of wheat intercropping maize and wheat intereropping sunflower mode by using the Penman-Monteith method recommend by FAO and dual crop c0effieient method. From the dynamic point of view, the availability of field irrigation water in Hetao Irrigation Area were estimated in the scale of time to consider the availability of deep percolation and the soil water storage of root zone to crops. The results show that the actual evapotranspiration of wheat intercropping maize and wheat intercropping sunflower is 635.8 mm and 428.2 mm respectively; irrigation water use efficiency of wheat intercropping maize and wheat inter- cropping sunflower is 91.9% and 88.4% respectively.

关 键 词：套种模式 SPAC系统 双作物系数法 田间灌溉 河套灌区 

分 类 号：S275[农业科学—农业水土工程]