Stackable raising seedling device and method using the same

A stackable raising seedling device, comprising

• a device body, having raising seeding hole parts disposed at intervals and holes disposed intervals, wherein the raising seeding hole parts and the holes are staggered in parallel and with each other along a first direction, the raising seeding hole part and the holes are staggered in parallel with each other along a second direction, and the holes of the first direction and the raising seeding hole parts of the second direction are adjacently arranged;
• the device body has a top surface and a bottom surface, each of the raising seeding hole pans comprises a hollow body, the hollow body is formed with a top hole and a bottom hole, the bottom hole is opposite to the top hole and extending from one end of the top hole, the top hole faces the top surface, the bottom hole is located on the bottom surface, the hole and the raising seeding hole part penetrate the top surface and the bottom surface, the top surface further has at least a first alignment part, the bottom surface further has at least a second alignment part, and the first alignment part of the device body is used to be aligned and connected to the second alignment part of the other one device body;
• the hollow body is a cone structure that tapers from the top hole to the bottom hole, and in the cone structure, an aperture of the lop hole is the largest, and an aperture of the bottom hole is the smallest;
• a raising seeding hole part of another one device body is capable of placing in the hole of the device body, and the device body is provided to be stacked on or under the other one device body and shifted with the other one device body along, the first direction or the second direction;
• the device body is integrally formed;
• and
• a floating planting board, having perforations disposed at intervals, each of the raising seeding hole parts is placed in the corresponding perforation, the perforation has a top perforation and a bottom perforation, the bottom perforation is opposite to the top perforation and extended from one end of the top perforation, a distance between the top perforation and the bottom perforation is defined as a first depth, a distance between the lop hole and the bottom hole is defined as a second depth, the first depth is larger than the second depth, the raising seeding hole part is used to receive a culture medium layer, the culture medium layer comprises an agar gel, and the agar gel is composed of a plant growth nutrient, agar powder and water.