What are the best ways to raise seedlings?

1, hydroponic seedling raising method: hydroponic seedling raising is a seedling raising method with flooding management as the main method in the whole seedling raising period, which has a certain effect on using water layer to keep warm and prevent cold and weeds in seedlings, and it is easy to pull out seedlings with little damage, and has the function of preventing salt, protecting seedlings and preventing flooding in saline-alkali land. However, long-term flooding, lack of oxygen in the soil, and the seedlings are easy to grow in vain, which affects the roots of seedlings and the quality of seedlings is poor. Generally, attention should be paid to seed quality, seed treatment, sowing quality, optimal sowing date, sowing amount (density), fertilizer and water conditions of rice seedlings, soil permeability, rice seedling management and application of plant growth regulators. Good seed quality means that seeds must have strong viability and strong germination potential, so that seeds can ensure a good seed foundation. After proper treatment (such as drying seeds), the germination rate and seedling rate of high quality seeds can be improved.

2. Wet seedling raising method: Wet seedling raising is a seedling raising method between water seedling raising and dry seedling raising. This way of raising seedlings is easy to adjust the contradiction between water and air in soil. After sowing, seedlings emerge quickly and orderly, and physiological collapse is not easy to occur, which is beneficial to promoting seedling rooting and preventing rotten buds from dying, and can also promote and control seedling growth through water management. Replacing water for seedling raising has become a basic seedling raising method. The more commonly used method is the wet insulation seedling raising method with plastic film. On the basis of wet seedling raising, after sowing, the surface of the compartment is covered with a film, mostly with low arch. This kind of seedling raising method is beneficial to heat preservation, moisture preservation and temperature increase, and can be sown early in time to prevent bud rot and seedling rot and improve the seedling rate. Sowing in early spring is very necessary to prevent low temperature and chilling injury.