What size seedling tray is good for corn seedling cultivation

1. The corn seedling tray is suitable for 128 hole hole seedling tray, with a pore size of 3 × 3 cm and a single overall size of 54.9 × 27.8 cm.
2. Black can be chosen as the color, as it has the characteristic of absorbing light and converting it into heat, which is beneficial for the development and growth of seedling roots.
3. The depth of the plug is usually between 3-5cm, which is conducive to the extension of plant roots and the absorption of water.