环境条件对黄土丘陵区旱坡地枣树水分蒸腾的影响

Effect of Environmental Conditions on the Transpiration of Jujube Tree in Arid Loess Hills Slope Land

以石楼木枣为试材 ,采用LI - 16 0 0稳定气孔计测试方法 ,对空气温度、光照和空气湿度与枣树叶片蒸发量的关系进行了研究。结果表明 ,晋西黄土丘陵区 ,枣树叶片蒸腾量与空气温湿度和光照具有显著相关性。由此建立起的回归方程为 : y =- 0 .746 +0 .0 76x1+0 .0 0 8x2 (其中a =- 0 .746 ,b1=0 .0 76 ,b2 =0 .0 0 8)。空气相对湿度与叶片蒸腾量的直线回归方程为 : y =3.5 2 4- 0 .0 41x(其中a =3.5 2 4,b =- 0 .0 41)。

Using cultivar “Shilou muzao”(Sisyphus jujube) as test material, the relationships between air temperature, light, air humidity and transpiration were studied through stable stoma meter LI-1600. The results show that in west Shanxi loess hills, there were significant correlations between leaf blade transpiration and air temperature, illumination and humidity, by which the regression equations were set up as follows: =-0.746+0.076 x 1+0.008 x 2(a=-0.746, b 1=0.076, b 2= 0.008, x 1 represents air temperature, x 2 represents illumination), and =3.524-0.041 x (a=3.524, b=-0.041, x represents air humidity).