The first is temperature regulation. After Qimiao, ventilation and cooling should be timely, so that the seedlings grow robustly, and enhance the cold resistance and disease resistance. “Two-leaf and one-heart†period should pay attention to the seedbed insulation. If the temperature is low, it will cause the flower bud differentiation to be obstructed. In early spring, the flowering and fruit drop is serious, but the sunny midday seedbed temperature is easy to be high, and proper ventilation is needed to prevent the seedling from changing too much due to the temperature difference. , excessive water loss and wilting or death.
The second is to choose sunny watering at noon to avoid excessive humidity on the seedbed.
The third is to increase light and keep the cover clean.
Fourth, we must pay attention to the prevention of pests and diseases. Seedlings are prone to blight and damping-off. We must promptly spray and protect against spread.
Fifth, 5-7 days before planting, it is necessary to cool the seedlings.
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