滴灌条件下温室番茄需水量估算模型  

Estimation model for water requirement of greenhouse tomato under drip irrigation

作　　者：刘浩[1] 孙景生[1] 梁媛媛[1] 王聪聪[1] 段爱旺[1] 

机构地区：[1]中国农业科学院农田灌溉研究所农业部作物需水与调控重点开放实验室,河南新乡453003

出　　处：《应用生态学报》2011年第5期1201-1206,共6页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(51009140;50779071)资助

摘　　要：基于修正后的Penman-Monteith方程,通过分析作物系数与积温的关系,构建了基于常规气象资料的滴灌条件下温室番茄需水量估算模型,并分别采用2009年5月2—13日(开花坐果期)和6月9—20日(成熟采摘期)2个时段内的实测蒸腾量和实测棵间土壤蒸发量对模型模拟结果进行验证.结果表明:修正后的Penman-Monteith方程适用于温室参考作物需水量(ET0)的计算;温室番茄作物系数与积温呈抛物线关系;所建需水量模型模拟值的平均相对误差小于10%,可用于估算滴灌条件下温室番茄需水量.Based on the modified Penman-Monteith equation,and through the analysis of the relationships between crop coefficient and cumulative temperature,a new model for estimating the water requirement of greenhouse tomato under drip irrigation was built.The model was validated with the measured data of plant transpiration and soil evaporation in May 2-13（flowering-fruit-developing stage） and June 9-20（fruit-maturing stage）,2009.This model was suitable for the estimation of reference evapotranspiration（ET0） in greenhouse.The crop coefficient of greenhouse tomato was correlated as a quadratic function of cumulative temperature.The mean relative error between measured and estimated values was less than 10%,being able to estimate the water requirement of greenhouse tomato under drip irrigation.

关 键 词：温室 滴灌 番茄 需水量 估算模型 

分 类 号：S641.2[农业科学—蔬菜学]