交替沟灌对大豆根层水分运动与产量的影响  

Effects of Alternative Irrigation on Water Redistribution of Root Zone and Yeild of Bean

作　　者：汪明霞[1,2] 赵志贡[1] 

机构地区：[1]黄河水利职业技术学院水文与水资源系,河南开封475001 [2]区域水土资源高效利用研究中心,河南开封475001

出　　处：《农机化研究》2013年第12期129-132,共4页Journal of Agricultural Mechanization Research

基　　金：河南省教育厅自然科学研究计划项目(2011B570007);水利部黄土高原水土流失过程与控制重点实验室开放课题基金项目(201205);黄河水院科研基金项目(2012QNKY010);黄河水院科研基金项目(2013KXJS005)

摘　　要：在蒸渗仪测坑中,对隔沟交替灌溉条件下大豆根系层土壤水分运动与产量进行了研究。结果表明,隔沟交替灌水方式与常规灌溉相比较,有助于减少灌溉水分在土壤根系层以下的深层渗透,干湿交替灌溉有助于减少表层土壤的蒸发,且在适宜的灌水量水平下,产量增加显著提高,从而有效提高该灌水方式下的水分利用效率。由此说明,大豆采取交替灌溉在华北地区是一种经济可行的灌溉方式。The water redistribution and water use efficiency of the bean with controlled alternative irrigation were studied with the lysimeters. The results show that to compare with conventional irrigation, the soil water of controlled alternative irrigation can decrease deep percolation, and increase water use efficiency. The surface water content inconventional irri- gation was higher than that in controlled alternative irrigation. Therefore, the soil evaporation of conventional irrigation was increased. Compared with conventional irrigation, the yield of controlled alternative irrigation was improved with the feasible irrigation amount. These results showed that the controlled alternative irrigation was a feasible irrigation pattern in Kaifeng.

关 键 词：隔沟交替灌溉 土壤水分运动 产量 大豆根系 

分 类 号：S275[农业科学—农业水土工程] S565.1[农业科学—农业工程]