秸杆和地膜覆盖下春玉米农田蒸散特征研究  

EVAPOTRANSPIRATION CHARACTERISTICS OF SPRING MAIZE UNDER MULCH FILM AND STAW COVER

作　　者：翟治芬[1] 赵元忠[2] 景明[3] 张建华[1] 

机构地区：[1]甘肃农业大学工学院,甘肃兰州730070 [2]甘肃省水利科学研究院,甘肃兰州730000 [3]黄河水利科学研究院,河南郑州450003

出　　处：《山东农业大学学报（自然科学版）》2010年第2期209-215,共7页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(HKY-JBYW-2007-15)

摘　　要：采用微型蒸发器测定了秸杆和地膜覆盖方式下不同的灌水处理下春玉米的棵间蒸发量,进而分析了棵间蒸发量与降雨灌水的关系、棵间蒸发占蒸发蒸腾总量的比例。试验结果表明,棵间蒸发强度与土壤含水率以及蒸发腾总量与叶面积指数均呈现较好的线性函数关系。根据实测数据求得了作物系数和水分利用效率。In the ways of mulch film and straw cover and different irrigation methods,This experiment tested Evaporation between spring maize by using miniature evaporator.Analysising the relation between rainfall,irrigation and soil evaporation and the proportion of soil evaporation from the total of evapotranspiration.The result show that the ralation between soil evaporation and soil water content,and the other ralation between the total of evapotranspiration and leaf area index presented better linear functional relationships.Based on the measured data,crop coefficient and water use efficience are obtained.

关 键 词：地膜覆盖 秸杆覆盖 蒸发蒸腾总量 棵间蒸发 

分 类 号：S161.4[农业科学—农业气象学]