Non-pollution tomato seedbed management technology in greenhouse

The greenhouse pollution-free tomato seedbed management is mainly the management of temperature and moisture. Before emergence, in order to promote emergence, daytime temperature 25 ~ 30 °C, night temperature 15 ~ 18 °C; after emergence, to maintain adequate light, daytime temperature 20 ~ 25 °C, night 10 ~ 15 °C. When two leaves are in one heart, the seedlings are divided into seedlings with a diameter of 10 to 12 cm or in a seedling bed (line and plant spacing 12 cm). Appropriate increase in temperature after seedlings, during the day 25 ~ 30 °C, 17 ~ 18 °C at night. When the growth point of seedlings begins to grow, the temperature is lowered, 20-25°C during the day, 12-13°C during the night, 5-7 days before planting, and the seedlings are exercised by lowering the temperature and controlling the moisture. Water management. As long as the bottom water is poured, it is generally no longer watered before emergence. When the seedlings are divided, they are poured with water for 1 time, and then watered after the seedlings are reduced.

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