The roots of Chinese cabbage are shallow, and the use of nutrients and water in deep soils is weak, and the requirements for soil, moisture, and nutrients are relatively high. In addition to selecting soils with deep soil and good physical and chemical properties, it is necessary to combine soil preparation with fertilization and hoeing for cultivation and management.
Spring Chinese cabbage should be planted in neutral soil that is easy to shelter, sunny, fertile, loose, and convenient for irrigation and drainage, and should not be replanted with cabbage crops. Before the harvest as soon as possible to deepen the sun, and apply enough base fertilizer. Spring cabbage has a short growth period. In principle, it uses a method of promoting the end of the fertilization. The amount of basal fertilizer accounted for 60% of the total amount of fertilization, 3,000 kg of compost per acre and 20 kg of NPK fertilizer.
7-10 days before planting, make earthworms and apply enough base fertilizer. The spring rain in the south is more suitable for the cultivation of deep ditch sorghum. The sorghum is easy to dry after the rain or watering, which can reduce the occurrence of downy mildew and soft rot. The thick soil layer is conducive to the downward extension of the Chinese cabbage roots. If the weather is dry, it should be properly watered to ensure that the soil is in a moist state when it is done. Covering the mulch and covering the greenhouse film after ramming to improve the temperature of the shed. A standard greenhouse can do 3 or 4 inches.
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