(57) [summary] [purpose] cheaper installation costs and operating costs, high economical and Boshimo effect, the unnecessary time to provide a Boshimo equipment that can be stored indoors to easily withdraw from the orchard. [Configuration] intake duct 1 for inhalation of the ground air layer of warm air Is provided with one substantially upright position, and connected to a suction blower 1 to the lower side of the intake duct 11, the discharge port 3 of the suction blower 1, the outer peripheral surface to close the front end portion through the Hai-fu-bako 15 Connect the air duct 16c provided with a large number of warm air jet hole 17, to extend in the orchard.
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