Rice seedling raising tray made of straw
The utility model relates to a rice seedling raising tray made of straw, belonging to the field of rice seedling raising trays. Square convex cones are distributed on a tray surface and are arranged longitudinally and transversely. The upper spacing among the convex cones is 7mm and the lower spacin...
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Format: | Patent |
Sprache: | chi ; eng |
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