The Variation Characteristics of Environmental Factors in Peach Tree Greenhouses Cultivation under Different Weather Conditions

【Objective】In order to get the variation characteristics and reg ulation via studying environmental factors during temperature rising period and fruit developing period inside and outside of the peach trees greenhouse.【Method】Both the data from the parameter of temperature variation between inside and outside of the greenhouse in temperature rising period,and the daily temperatur e variation of humidity,light intensity,CO2 concentration among fruit develo pi ng period were measured and analyzed.【Result】The temperature of the air and so il inside of the greenhouse increased gradually along with outside temperature r ising during temperature rising period.The varying trend of the temperature and humidity in daytime in greenhouses was correlated with that of outside during the fru it developing period,The light intensity inside of the greenhouses varied follow ing the outside,and that was influenced seriously by the sand-dust weather.The CO2 concentration in greenhouses was always lower than that in the outside,and easily aff ec ted by the sand-dust weather.【Conclusion】The variation of the environmental factor s including temperature,humidity,illumination and CO2 concentration in peach t rees greenhouses was depended on the outside circumstance and was correlated with ou tside atmosphere.During temperature rising period,the temperature in greenhous es should be increased gradually,and both the temperatures of air and soil inside the greenhouses should be increased simultaneously.During the fruit developing period,such measures should be implemented to improve illumination circumstance in greenhouses,including properly ventilation to reduce temperature and humidit y in greenhouses,and clear dust on plastic cover and leaves in the sand-dust weather.Moreover,CO2 fertilization must be enriched inside the greenhouse to increa se the photosynthetic rate of peach trees.