摘要
利用OTC-1型开顶式气室对菠菜和青菜进行不同O_3浓度熏气试验结果表明,当大气中O_3浓度升高,菠菜和青菜气孔阻力增大,光合作用速率下降,地上部和地下部生物量大幅度降低,当O_3浓度达200μmol/kmol时,菠菜和青菜地上部生物量分别不足对照的1/9和1/3,地下部生物量分别下降79.8％和69.3％。
The different O3 concentration experiments on spinach and Chinese cabbage were conducted in open top chambers and the impacts of different O3 concentration on the growth and development,physiological characteristic parameters of spinach and Chinese cabbage were analyzed.The results show that the stomatal resistance is increased,photosynthesis rate and the biomass of above-ground and sub-ground are decreased in large scale when the O3 concentration enrichment.When O3 concentration arrives at 200μmol/kmol,the above ground biomass of spinach and Chinese cabbage are less than 1/9 and 1/3 and the sub-ground biomass are decreased by 79.8% and 69.3%,respectively.
出处
《中国生态农业学报》
CAS
CSCD
2003年第2期18-20,共3页
Chinese Journal of Eco-Agriculture
基金
国家自然科学基金(49899270)
