Answer: The growth time of summer cabbage is very short, and the whole growth period should be promoted to accelerate growth. Watering at the seedling stage controls the three seedlings and the five seedlings. Water three times during the emergence period, and the fourth and fifth times are inter-seedling water and fixed-seedling water. After watering or after rain, plowing in time. Combined with the fixed seedling water application of one-time manure, use 10 kg of urea per mu, or 15 kg of ammonium sulfate, hole application or furrow application. The fertilization point is 8 to 10 cm away from the seedlings, and less damage to roots and leaves. Pouring water once a day before Baoxin, squatting seedlings after plowing. When the color of the leaves turns green, the leaves become thicker, and the squatting ends at noon. When pouring water after squatting, combine with watering and apply 15 kg of urea per mu along the water. Observe frequently in the future and water in time when the surface is white, until the watering stops 5 to 7 days before harvest.
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