大麦／蚕豆间作对土壤水势的影响  

Effect of Barley and Broad Bean Intercropping System on Soil Water Potential

作　　者：周绍松[1,2] 李永梅[1] 郑毅[1] 周敏[2] 

机构地区：[1]云南农业大学资源环境学院,云南昆明650201 [2]云南省农科院农业环境资源研究所,云南昆明650205

出　　处：《土壤通报》2009年第3期487-491,共5页Chinese Journal of Soil Science

基　　金：云南省科技厅项目(2003FCCFCO1A009和2006YX352)资助

摘　　要：通过大麦/蚕豆间作盆栽试验,研究了大麦/蚕豆间作中大麦和蚕豆、间作大麦与单作大麦在土壤水势变化方面的差异。研究结果表明,在大麦/蚕豆间作中,大麦抽穗期之前蚕豆土壤水势下降速度比大麦快,而大麦抽穗期之后大麦土壤水势下降速度比蚕豆快。这证明大麦抽穗期之前土壤水分是从大麦向蚕豆迁移,而大麦抽穗期之后土壤水分是从蚕豆向大麦迁移。大麦/蚕豆间作中的大麦除了在苗期前期对土壤水分的竞争弱于单作大麦外,其余生育期间作大麦与单作大麦相比存在着对土壤水分更为强烈的竞争。The pot experiment of wheat/broad bean intercropping was conducted to investigate the differences in soil water potential between barley and broad bean intercropping system. The results showed that soil water potential of broad bean decreased faster than barley before barley heading stage, but the soil water potential of barley decreased faster than broad bean after barley heading stage. The result implied that soil water could move from barley to broad bean before barley heading stage, but soil water moved from broad bean to barley after barley heading stage. There was intensive competition in barley intercropping compared with barley mono-cropping for soil water in most barley growth stages, except for early stage of barley seedling.

关 键 词：大麦 蚕豆 间作 单作 土壤水势 土壤水分迁移 

分 类 号：S344.2[农业科学—作物栽培与耕作技术] S152.7[农业科学—农艺学]