东北半干旱区农田水循环中蒸散量的影响因素分析  

Analyze on Evapotranspiration of Farm Land Water Cycling in Semiarid Area North-East

作　　者：王孟雪[1] 张忠学[1] 魏永霞[1] 滕云[1] 

机构地区：[1]东北农业大学,哈尔滨150030

出　　处：《黑龙江农业科学》2005年第3期4-7,共4页Heilongjiang Agricultural Sciences

基　　金：国家"863"项目(2002AA2Z4251)

摘　　要：通过对甘南试验基地大豆各生育期土壤含水量和生物量的测定,利用水量平衡公式计算了蒸散量,分析了田间蒸散量的变化,测定各生育期叶面积指数,讨论其对蒸散量的影响,并且以常规气象资料为基础,用相关分析法分析了各气象要素对蒸发量的影响程度。Research on the experiment data of soil moisture and biomass during the period of soybean in Gannan Experimental base, potential evapotranspi ration was calculated with water balance method. We has analyzed the change of t he estimation of evaportranspiration. By the survey of LAI in each growing stage , it is discussed that the influence of LAI on the evaportranspiration. Based on the data for routine meteorology, effect of each meteorological element on evap oration capality was analyzed.

关 键 词：影响因素分析 半干旱区 水循环 农田 东北 常规气象资料 土壤含水量 田间蒸散量 叶面积指数 相关分析法 试验基地 公式计算 水量平衡 影响程度 气象要素 生育期 生物量 蒸发量 测定 大豆 

分 类 号：S154[农业科学—土壤学]