Seed treatment method. 1 Low-temperature treatment, also called freezing, is commonly used for melons and solanaceous vegetables. The method is as follows: The seeds that will germinate after bloating are frozen at a temperature of about 0°C for 1 to 2 days, and then seeded to promote germination and enhance the cold resistance of the seedlings; The tomato or cucumber seeds to be germinated are left at a lower temperature of 1°C-5°C for 12-18 hours per day, and then transferred to a higher temperature of 18°C-22°C for 6-12 hours, and thus repeated for several days. , Can significantly improve the cold resistance of vegetable seedlings, and speed up its growth and development.
Low-temperature refining method. About 10 days before the planting of seedlings, strict control of watering, and gradually increase the ventilation, the seed bed temperature dropped to 15 °C ~ 20 °C during the day, night (cucumber, pepper, eggplant, etc.) dropped to 5 °C ~ 10 °C (for Strongly growing tomato seedlings can be reduced to 1 °C to 5 °C); all coverings are removed 3 to 4 days before colonization. In this way, the seedlings can be better adapted to the open environment after colonization, which will help shorten the seedling period and increase the survival rate.
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