The main function of plastic film is increasing temperature and humidity. Increasing the accumulated temperature of seedling period of cotton is very important for enhancing the production of cotton. The difference in average highest ground temperature between inner and outer plastic film in April are greater, while the difference in average lowest ground temperature are tiny. And the difference in average ground temperature are stable relatively. The difference in average ground temperature between inner and outer plastic film are related to the physical characteristic of plastic film, the meteorological conditions outside plastic film and the heat flux in soil.
Bimonthly of Xinjiang Meteorology