Seed tray have many advantages, such as seedling neat, seedling strong , developed roots and easy transplanting, etc.

　　Seed tray planting precautions：

　　1.Substrate

　　The seeding substrate used for seed tray should be non-toxic and no insect, with good ventilation and drainage, stable PH value, and can not fertilize in substrate, only retained originally contained nutrients in the substrate.

　　2.Watering fertilizing

　　Watering should be carried out with clear water, avoid fertilizing water or sewage, when seedlings grow out of the true leaves, can apply with a small concentration of fertilizer. However, it is better to use the root external spray fertilizer, spraying 0.1-0.2% urea and potassium dihydrogen phosphate solution can reach the nutrients needed for seedlings.

　　3.Sowing

　　Small seeds sowing are usually not covered with soil or mixed with soil, and the larger seeds soil thickness is about twice the size of the seed. After sowing, plants that like sunlight only need to pay attention to moisturizing, plants that don't like sunlight can cover the seed tray with a layer of newspaper to achieve the effect of shading.