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Greenhouse nursery must control temperature
Greenhouse vegetable nursery, different temperature requirements are different at different times: sowing to unearthed, should be given a higher temperature; unearthed to true leaves show, in order to prevent seedlings grow, reduce the temperature properly, generally lower than the germination period by 4 °C ~ 5 °C; To moderately increase the temperature of the seedlings to promote hair roots and seedlings, generally cool and cool vegetables require daytime 20°C~25°C, nighttime 10°C~13°C, hi-temperature vegetables require daytime 25°C~30°C, nighttime 15°C~18°C In the week before planting, the temperature should be appropriately reduced to carry out the cold hardening seedlings.
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