毛乌苏沙地膜下滴灌青贮玉米作物需水量研究  

Study on Water Requirements and Crop Coefficients of Silage Maize under Mulched Drip Irrigation in Maowusu Sandlot

作　　者：范晓慧[1] 吕志远[1] 郭克贞[2] 苏佩凤[2] 范志东[1] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018 [2]水利部牧区水利科学研究所,呼和浩特010010

出　　处：《灌溉排水学报》2014年第1期65-67,73,共4页Journal of Irrigation and Drainage

基　　金：内蒙古应用技术研究项目(20100510);水利部948引进项目(201202)

摘　　要：基于2011年内蒙古鄂尔多斯市乌审旗毛乌素沙地试验站气象数据,研究了充分供水条件下膜下滴灌青贮玉米的需水规律。结果表明,膜下滴灌下作物生长发育(株高和叶面积指数)好于常规滴灌,全生育期内青贮玉米的蒸发蒸腾量、平均日耗水强度低于常规滴灌,在青贮玉米整个生育期内有一定的节水保墒效果,有利于作物充分吸收水分。膜下滴灌和常规滴灌青贮玉米作物系数在整个生育期内是先增大后减小的单峰变化曲线,且膜下滴灌低于常规滴灌。According to the meteorological data in Maowusu sandlot of Mongolia Erdos in 2011, the water requirements of silage maize under mulched drip irrigation in the sufficient water supply condition were analyzed. The results showed that the heights and LAI of silage maize under mulched drip irrigation were higher than conventional drip irrigation while evapotranspiration quantity and water consumption in the whole growth stages were lower than conventional drip irrigation. Drip irrigation under mulch could save and preserve the soil moisture, and promote the water uptake. Crop coefficient increased first, then decreased with a single-peak curve in the whole growth stages, and crop coefficient was lower under mulched drip irrigation than conventional drip irrigation.

关 键 词：膜下滴灌 青贮玉米 作物需水量 作物系数 

分 类 号：S275.6[农业科学—农业水土工程]