| 摘要 |
In a large vinyl house (9) comprising small ones (4)(5) on the inside, warm-air is supplied only for the small ones (4)(5) through a pipe (1) having many warm-air spouting holes (2)(3). Warm air spouted from the upper part of the small inner house slowly moves in convection. This method grows plants and keeps sufficient temperature without using straw mat. A temperature sensor (10) in the small houses (4)(5) senses and controls the inner houses temperature at a set temperature.
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