绿洲灌区固定道垄作对春小麦土壤水分变化动态的影响  

Effects of permanent raised bed on soil water in spring wheat in Oasis Irrigation Area

作　　者：雒淑珍[1] 马忠明[2] 王智琦[2] 王平[1] 王德权[1] 邓兵[1] 

机构地区：[1]甘肃农业大学农学院,甘肃兰州730070 [2]甘肃省农科院土壤肥料与节水农业研究所,甘肃兰州730070

出　　处：《甘肃农业大学学报》2009年第2期52-55,59,共5页Journal of Gansu Agricultural University

基　　金：澳大利亚国际农业研究中心项目(SMCN/2002/094)

摘　　要：研究了固定道垄作条件下,春小麦的土壤水分动态变化.结果表明：不同栽培措施下,0-120 cm土层土壤贮水量的变异系数随着土层的加深而减小,其中剧变层（0-30 cm）的土壤贮水量因受降水和灌溉的影响变化剧烈;小麦拔节期固定道垄作0-60 cm土壤贮水量高于其它处理5 mm左右;抽穗到灌浆期,土壤贮水量下降幅度最大,表现出良好的供水性,可节水200 mm左右,水分利用效率较传统提高31.66%.The field experiment was carried out to study changes in soil moisture in spring wheat under the permanent raised bed（PRB）.Results showed that the variance of soil water reservation decreased with deeply of the soil layer.Soil water reservation changed significantly in 0～30 cm soil layer as raining and irrigation.Soil water reservation in the 0～60 cm soil layer was higher under PRB than other treatments.Soil water reservation declined noticeably from teaseling stage to the milking stage,a good supplication of water was performed.

关 键 词：土壤水分 固定道垄作 春小麦 

分 类 号：S152.7[农业科学—土壤学]