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Fog days should be properly increased cover to prevent vegetables from freezing. After continuous overcast and foggy days, it is clear and clear. After removing the cover, pay attention to observing the changes of the seedlings and find that the wilting is immediately covered. After the seedlings are recovered, they are reopened and covered with wilting. Such repeated, after 2 to 3 days, you can Transfer to normal management.
If the temperature in the shed continues to drop, artificial heating is required.
Generally do not water in the fog to prevent injury. If the humidity in the booth is too large, promptly ventilate and drain it; if it cannot be ventilated, weeds can be used to soak moisture in the rows or in fine dry soil.
Foggy food must be warmed and dampened
Fog days are often accompanied by low temperatures, high humidity, and low sunshine hours, which are extremely detrimental to the growth of greenhouse vegetables, and are prone to induce various pests and diseases. We must strengthen management.