温室秋冬茬青椒冠气温差与环境因子关系研究

Study on Relationship Between Environmental Factors and Canopy-air Temperature Difference of Autumn-winter Greenhouse Pepper

以青椒"35-619"为试材,通过温室内小区试验,以土壤水分为控制变量,研究了秋冬茬青椒冠气温差与太阳辐射、大气饱和水汽压差和空气湿度等环境因子的关系。结果表明:在土壤含水量较小时青椒的冠气温差明显较高,可以较合理的反映作物水分亏缺程度。冠气温差与各环境因子之间具有较好的复相关关系,冠气温差随着太阳辐射、空气湿度的升高而升高,随着大气饱和水汽压差的增大而降低,相关系数为0.8468。

Taking pepper ＇35-619＇ as material, based on the control variables of soil moisture by plot experiment in the greenhouse, the relationship about autumn-winter greenhouse pepper between canopy-air temperature difference and solar radiation,atmospheric vapor pressure and air humidity were studied. The results showed that canopy-air temperature was obviously higher when soil moisture content was smaller,which could reflect the crop water deficit reasonably. The good multiple correlation of canopy-air temperature difference and the main environmental factors was obtained, the canopy-air temperature incresed with the increasing of solar radiation,and air humidity decreased with the increasing of atmospheric vapor pressure,the correlation coefficient was 0. 8468.