A: After the emergence of celery, it is in the low temperature season, and the seedlings have poor drought resistance. The water should be replenished in time, and shallow irrigation should be done to keep the soil moist. When the seedlings grow to 2~3 true leaves, the seedlings are taken and the weeds in the field are removed. When 4~5 leaves, the root system is more developed, the absorption capacity is enhanced, and the water can be properly controlled to keep the surface wet.
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