温室内黄瓜叶温变化特性的试验研究  

Experimental Study on Temperature of Cucumber Leaf in Greenhouse

作　　者：李强征[1] 李国臣[1] 于海业[2] 马成林[2] 

机构地区：[1]井冈山学院工学院,江西吉安343009 [2]吉林大学生物与农业工程学院,长春130025

出　　处：《农机化研究》2006年第8期144-146,152,共4页Journal of Agricultural Mechanization Research

基　　金：吉林省科技发展基金(20020657);井冈山学院校重点学科-机械电子工程专项基金资助项目

摘　　要：考察了充分供水和水分亏缺条件下温室内黄瓜叶温变化的差异及其与相关作物生理信息的关系。结果表明,叶温与叶面蒸腾的Pearson相关系数R2达到了0.7以上,叶面蒸腾是影响叶温变化的内在因素,供水条件的不同影响了作物蒸腾的变化,从而导致作物叶温变化的差异。采用通径分析的方法,分析了气温、饱和水汽压差(VPD)和光量子通量(PAR)等主要气象因子对叶温的影响。结果表明,叶温与各环境因子的相关系数R2≥0.86,气温的变化直接作用于叶温,饱和水汽压差(VPD)和光量子通量(PAR)都通过气温的间接作用影响着叶温的变化,3个环境因子对叶温影响程度依次为气温>VPD>PAR。It was studied the effect of soil moisture on leaf temperature under different watering levels （well-watered and water-deficit）. The experiment indicated that the correlation between leaf temperature and evaporation was about r^2≥0.7, evaporation was intrinsic factor of influencing leaf temperature. Path analysis showed that the person correlation （R^2） between leaf temperature and environmental factors were more than 0.86, air temperature effected leaf temperature directly, VPD and PAR influenced leaf temperature indirectly through air temperature, the order of influencing leaf temperature was leaf-temperature 〉 VPD 〉 PAR.

关 键 词：农艺学 黄瓜叶温 试验研究 水分亏缺 温室 

分 类 号：S314[农业科学—作物栽培与耕作技术]