Abstract
A sunken solar greenhouse has a good heat preservation environment. The influence of the general indoor temperature on the temperature of the roots was evaluated. A wireless sensor and U disk recorder were used to determine the indoor temperatures of a single section and multiple sections in a sunken solar greenhouse. Results showed that the rate of temperature change from in the vertical, horizontal and longitudinal sections in descending order at the opening moment and at the strong light moment. The temperatures in the single cross-section and multiple cross-sections were approximately equal during winter from 00:00 to 8:00 in the morning. These values can be used for calculating theoretically the heat loss in a greenhouse.
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