不同土壤含水量对日光温室黄瓜生理特性的影响

Effect of Different Soil Water Content Treatment on Physiological Characters of Cucumber in Solar Greenhouse

不同土壤含水量对日光温室黄瓜生理特性影响不同。当土壤含水量为饱和含水量的 85 %～ 90 %时 ,根系活力较高 ,光合速率较强 ,气孔阻力较小 ;当土壤含水量为饱和含水量的5 5 %～ 60 %时 ,黄瓜叶片游离蛋白质、脯氨酸、还原糖含量较高 ,光合速率较弱 ,气孔阻力较大 。

Cucumber root activity and photosynthesis is high when soil water content is high in treatment 1(the ratio of actual soil water content to saturated soil water content is 0.85-0.90),and free proline?protein and reducing sugar is low in leaves. As to treatment 3 proline?protein and reducing sugar is high,it s stomatal resist is also high.