饱和水汽压差

网室内外小气候要素（相对湿度、温度和饱和水汽压差）的差异随着风速的增加而减小；

The differences in relative humidity , temperature and vapor pressure deficit between inside and outside the screen-house decreased with the wind velocity increasing .

水稻气孔阻力与相对湿度、土壤含水量、叶气温差和光强呈现负相关，与饱和水汽压差、温度呈现正相关。

The stomatal resistance is negatively correlated with relative humidity , soil moisture , leaf-air temperature difference and light intensity and positively correlated to vapor pressure deficit and temperature .

据此建立了充分供水条件下冠气温差与饱和水汽压差的关系方程，作为基线方程，计算不同灌水处理的冬小麦旺盛生长期间水分胁迫指数（CWSI）。

A baseline equation of Tc - Ta with VPD was established to calculate the Tc - Ta under non-water-stressed condition for the purpose of calculation of crop water stress index ( CWSI ) .

干热季林冠上湿度变化范围为26.5%~97.2%，饱和水汽压差数值大小介于0.3~30.5hPa之间；

In the dry hot season , relative humidity and water vapour deficit varied from 26.5 to 97.2 % and from 0.3 to 30.5 hPa , respectively ;

蒸腾速率受到许多田间小气候因子的影响，相关分析及多元逐步回归分析表明净辐射与空气饱和水汽压差是影响茶园蒸腾作用的2个主要气象因子。

Correlation analysis and multi-factor successive regressional analysis revealed that net radiation and water vapor saturated deficit were the two major meteorological factors affecting transpiration of the tea plants .

空气温度、叶面温度、饱和水汽压差和气孔导度是影响水稻的蒸腾速率的关键因素，并在水稻不同生育阶段表现不同的影响程度；

Air temperature , leaf temperature , vapor pressure deficit and stoma conductance were the key factors affecting transpiration , and the effects would be different in different growing stages .

蒸腾强度与光量子密度、饱和水汽压差、水面蒸发等气象因子之间，具有较好的相关关系；

The values of TR showed good agreement with meteorological elements such as photon flux density ( PFD ), saturation vapour pressure deficit of air ( D ) and water surface evaporation ( EV );

棵间土壤蒸发与总辐射、气温、饱和水汽压差等气象因子呈指数正相关关系，而植株日茎流量与日总辐射呈线性正相关，与空气饱和水汽压差呈对数正相关关系。

It was showed that a positive exponential correlation existed between soil evaporation and meteorological factors such as solar radiation , air temperature and vapor pressure difference . Daily sap flow rate had a positive linear correlation with daily solar radiation , and a logarithm relationship with vapor pressure difference .