微型蒸发器测定土面蒸发的试验研究

被引:83
|
作者
孙宏勇
刘昌明
张永强
张喜英
机构
[1] 中国科学院石家庄农业现代化研究所
[2] 中国科学院石家庄农业现代化研究所 河北石家庄 
[3] 河北石家庄 
关键词
Microlysimeters; 土壤蒸发; 外界因素; 影响;
D O I
10.13243/j.cnki.slxb.2004.08.021
中图分类号
S152.7 [土壤水分];
学科分类号
摘要
本文通过对比不同微型蒸发器(Micro lysimeters,简称MLS)对测定土面蒸发的试验,以5cm长的MLS每天更换土体作为对照,发现15cm是比较理想的最短长度。同时,对影响土壤蒸发的外界因素进行了分析。结果显示,气象因素中相对湿度、饱和水气压差和辐射同土壤蒸发有着密切的关系,在P=0 05水平下均达到显著水平。此外,表层土壤含水量也是一个重要影响因素。
引用
收藏
页码:114 / 118
页数:5
相关论文
共 7 条
  • [1] Bare soil evaporation near a surface point-source emitter. Matthias A D,Salehi A D,Warrick A W. Agricultural Water Management . 1986
  • [2] Measurement and estimation of evaporation from soil under sparse barley crops in northern Syria. Allen S J. Agricultural and Forest Meteorology . 1990
  • [3] Direct evaporation from soil under a row crop canopy. Shawcroft R W,Gardner H R. Agricultural Meteorology . 1983
  • [4] Soil temperature and water evaporation of small steel and plastic lysimeters replaced daily. Todd R W,S R Evett,Howell T A,et al. Soil Science Society of America Journal . 2000
  • [5] Wall material and capping effects on microlysimeter temperatures and evaporation. Evett S R,Warrick A W,Matthias A D. Soil Science Society of America Journal . 1995
  • [6] Evaporation measurements and predictions from soils under crop canopies. Klocke N L,Martin D L,Todd R W,et al. Transactions of the American Society of Agricultural Engineers . 1990
  • [7] Measurement of evaporation from soil beneath crop canopies. Wallker G K. Canadian Journal of Soil Science . 1983