日光温室番茄叶温变化特性研究

Study on Temperature Change of Tomato Leaf in Facility Cultivation

研究了设施栽培中番茄叶温的变化情况,及其与环境因子变化之间的关系。通过对叶温、气温、空气相对湿度、光合有效辐射、蒸腾速率、气孔导度和叶水势的测定结果表明,叶温与气温变化有着相同的趋势,随日光温室内气温的升高,叶温也升高,气温变化对叶温变化的影响存在滞后性,最高叶温相对于最高气温的出现时间晚30～60min。空气温度的变化直接影响着叶温的变化,空气湿度和光合有效辐射通过空气温度的间接作用影响着叶温的变化。温室内影响番茄叶温的主要因子为气温。

It was studied in the tomato facility cultivation leaf temperature change situation , has obtained the relations between the leaf temperature change and the temperature change： leaf temperature and the temperature change has the same tendency, the air temperature change to the leaf temperature change influence existence lag. The air temperature change directly affect the changing of leaf temperature. The air humidity and the active photosynthesis radiation affect the changing of leaf temperature in- directly through the air temperature.The o：rder of the leaf temperature under the deal with different water is 65% treatment〉55% treatment〉75% treatment. The primary factors affect the leaf temperature is air temperature.