青海东部4种作物群落蒸散规律研究  

Evapotranspiration measurements of four crop community in eastern Qinghai province

作　　者：朱春来[1] 张耀生[1] 孙广春[1] 

机构地区：[1]中国科学院西北高原生物研究所

出　　处：《西北农林科技大学学报（自然科学版）》2007年第5期107-110,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：中国科学院知识创新工程重大项目(kzcxl-09-01);中国科学院西北高原生物研究所知识创新重点研究领域项目(0254091211)

摘　　要：采用改进的离体连续快速称重法对7～9月燕麦（Awna Sativa）、豌豆（Pisum Sativum）、无芒雀麦（Bromus Innermis）、紫花苜蓿（Medicago Sativa）枝和叶片的蒸腾速率、蒸腾量及土面蒸发量进行了测定。结果表明，豌豆的枝蒸腾速率和叶片蒸腾速率均最高，其次为紫花苜蓿和燕麦，无芒雀麦最低。在7～9月中，8月4种作物整株和叶片的平均日蒸腾量均最高，9月次之，7月最低。4种作物群落土面蒸发量的日变化无明显规律性。Transpiration rate, transpiration quantity and ground evaporation quantity of plants and leaves of Arena Sativa, Pisum Sativum, Bromus Innermis, Medicago Sativa are measured by using improved QCWC （quick and continuous weighting after being cut off method） in July, August and September. The results show that transpiration rate of branch and leaves of Pisum Sativum is the highest in 4 crops,while Bromus Innermis is the lowest one. And average transpiration quantity of plants and leaves of 4 crops per day in August is the highest among 3 months,the second highest is in September,and the lowest one in July. Dairy changes tendency of ground evaporation of 4 crops have no typical regularity.

关 键 词：群落蒸散 土面蒸发量 燕麦 豌豆 无芒雀麦 紫花苜蓿 青海东部 

分 类 号：S314[农业科学—作物栽培与耕作技术]