摘要
The impacts of O_3 concentration change on rice yields for different lengths of exposure time are studied by means of the OTC-1 open-top chamber.The resuhs indicate that when O_3 concentration increased from 50 ppb to 200 ppb during the time period of 20 to 80 days in the experiment,the rice yield was reduced by 6.78% to 33.72%.Two main influencing factors for rice yields are the increased O_3 concentration and the extended exposure time.Using a logarithm function to simulate the impacts of O_3 concentration on rice yields is better than using a the Weibull function.
The impacts of O_3 concentration change on rice yields for different lengths of exposure time are studied by means of the OTC-1 open-top chamber.The resuhs indicate that when O_3 concentration increased from 50 ppb to 200 ppb during the time period of 20 to 80 days in the experiment,the rice yield was reduced by 6.78% to 33.72%.Two main influencing factors for rice yields are the increased O_3 concentration and the extended exposure time.Using a logarithm function to simulate the impacts of O_3 concentration on rice yields is better than using a the Weibull function.
基金
supported by the Key Project of National Natural Science Foundation of China(49899270)
