How does celery continue to cry or suddenly cool down for a long time, it is easy to freeze damage, but the leaves are white and dry, but the rot is rotted to death in the ground. How does celery prevent cold damage?
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Symptoms of celery freezing damage: freezing damage may occur in early spring cultivation and autumn open field cultivation. The leaves of the damaged leaves are white and dry, and the damaged leaves are like water scalding.
Celery freeze damage prevention method:
1. Rationally cooperate with the application of nitrogen, phosphorus and potassium fertilizers to promote root development and enhance cold resistance.
2. Cultivate the soil, loosen the soil, and raise the ground temperature.
3, autumn open field cultivation in case of sudden changes in temperature can be temporarily covered with straw, leaves, chaff, grass ash.
4. Harvest at the right time. Spraying 6000% alfalfa lactone emulsifiable concentrate 6000-8000 times before winter can effectively improve the cold tolerance of celery.
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