PROBLEM TO BE SOLVED: To provide a field crop shading cultivation device capable of accurately finding out field crops growing in a cylindrical body for shading and cultivating the field crops in white color, without pulling out the cylindrical body.SOLUTION: A device intended for crops which hate light, extend standing nearly upright on the ground, and are planned to be reaped at a stage of growing to a fixed height, includes: (a) a tube 1 having shading properties, capable of being arranged in a standing condition, striding over the crops, and having a height exceeding a reaping plan of the crops; (b) a cover body 3 made of a core plate material 4, and having shading properties by a film-like shading film body 7 leaking no light to the inside, and exhibiting flexibility allowing to rise by being pushed by growth of the crops; and (c) a bar-like measuring body 9 arranged in a standing condition on the upper part of the cover body 3 to be a guide of a reaping plan of the crops.
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