大棚番茄营养生长期日蒸腾量估算模型研究  

Estimation Model of Transpiration Per Day for Tomato in Vegetative Growth Period in Plastic-Covered Tunnel

作　　者：张大龙[1] 李建明[1] 姚勇哲[1] 张荣[2] 孙三杰[1] 陈凯利[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100 [2]西北农林科技大学食品科学与工程学院,陕西杨凌712100

出　　处：《灌溉排水学报》2013年第1期22-25,73,共5页Journal of Irrigation and Drainage

基　　金：国家"十二五"863计划项目(2011AA100504);国家"十二五"科技支撑计划项目(2011BAD12B03-03)

摘　　要：基于大棚盆栽试验,分析不同水分处理条件下番茄单株日蒸腾量、单株总叶面积、气象因子、土壤水分状况等因素,建立了塑料大棚番茄营养生长期单株日蒸腾量估算模型,并进行模型检验。结果表明,在土壤含水率为95%FC～100%FC、80%FC～85%FC、65%FC～70%FC时,模型决定系数R2分别为0.85、0.84、0.86,平均相对误差分别为13.24%、14.64%和14.70%。所建模型的参数较少且易获取,预测的精度较理想,可以较好地估算塑料大棚番茄营养生长期单株日蒸腾量。Based on pot experiments, the estimation model was established by analyzing parameters such as transpiration per day per plant, total leaf area per plant, meteorological factors and soil moisture under dif- ferent water treatments. The model was verified according to measurement data of different sowing dates in a year. The results showed that the coefficients of determination （R2） of the model under different soil water gradients （95%FC-100%FC, 80%FC-85%FC, 65%FC-70%FC） were 0.85, 0. 84, 0. 86 and the average relative errors（MRE） were 13.24~, 14. 64%, 14.70%, respectively. The model could be used to predict tomato transpiration per day in vegetative growth period.

关 键 词：塑料大棚 蒸腾 估算模型 番茄 

分 类 号：S641.2[农业科学—蔬菜学] S626[农业科学—园艺学]