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以“京茄一号”茄子为试材,采用温室盆栽方式,分别设定3个不同臭氧浓度处理:不释放臭氧气体(T_1)、低浓度臭氧1.0 mg·m~(-3)(T_2)和高浓度臭氧2.0 mg·m~(-3)(T_3),通过测定茄子叶片净光合速率、气孔导度、蒸腾速率和叶绿素含量以及株高、茎粗和叶片数,比较不同臭氧浓度处理对茄子光合特性与生长指标的影响,以期为臭氧消毒技术在蔬菜栽培中的应用提供技术参考。结果表明:茄子叶片气孔导度排序依次为T_1>T_2>T_3,T_1与T_2之间无显著差异,蒸腾速率的变化规律为T_2>T_1>T_3;T_2处理显著提高了茄子叶片的蒸腾速率及叶绿素含量;与T_1相比,T_2茄子株高、茎粗和叶片数分别增加了6.4%、10.7%和20.5%。综上所述,不同臭氧浓度处理下茄子的光合特性与生长指标差异显著,其中以臭氧气体浓度为1.0mg·m~(-3)(T_2)的表现最优。
The experiment was conducted in greenhouse with pot plants of “Qinzhao No. 1” and three different concentrations of ozone (T 1) and 1.0 mg · m -3 (-3), respectively T_2 and 2.0 mg · m -3 (T_3) of high concentration ozone were measured. The net photosynthetic rate, stomatal conductance, transpiration rate and chlorophyll content, as well as plant height, stem diameter and leaf number of eggplant were measured to compare the effects of different ozone concentrations The effects of treatment on photosynthetic characteristics and growth indexes of eggplant were studied in order to provide technical reference for the application of ozone disinfection technology in vegetable cultivation. The results showed that the order of stomatal conductance of eggplant leaves was T_1> T_2> T_3, and there was no significant difference between T_1 and T_2. The change of transpiration rate was T_2> T_1> T_3. T_2 treatment significantly increased the transpiration rate of chlorophyll Compared with T 1, the plant height, stem diameter and leaf number of T 2 eggplant increased by 6.4%, 10.7% and 20.5%, respectively. In conclusion, the differences of photosynthetic characteristics and growth indexes of eggplant under different concentrations of ozone were significantly different, of which ozone gas concentration was 1.0mg · m -3 (T 2).