Purple cabbage, also known as red cabbage, purple cabbage, etc., is one of the rare vegetables, with high economic benefits. Its cultivation techniques are as follows:
Seedling nursery beds should be chosen for land that has not been planted with cabbage, and sufficient base fertilizer should be applied. The seedbed is best disinfected with chlorothalonil. Soaking seeds after 2-4 hours germination, soaking time is too long for germination and unearthed. Seedlings are seedlings at the time of two leaves.
Colonization was selected for the cultivation of plots with fertile soil and convenient irrigation and drainage. There are six or seven true leaves when the seedlings are colonized. On ridge planting, every 150 cm is a planting belt with a width of 10 cm. Plant two rows in a row with 50 cm spacing and 35 cm spacing.
Within 7-10 days after field management, the daytime temperature is controlled at 25°C-27°C and nighttime at 13°C-15°C. Into the rosette period and the ball period, the day temperature is controlled at 18 °C -20 °C, night 12 °C -15 °C, if the daytime temperature exceeds 25 °C, to open the film vent. When the temperature is lower than 17°C, cover the membrane to prevent wind. 15 days after seedling sowing, the first topdressing is carried out in combination with watering, applying 15-20 kg of urea per acre. The second time the top dressing was applied before the ridges of the rosette leaves and the balls began to cohere, 10 kg of urea and 5 kg of potassium sulfate were applied per mu. The third time dressing fertilizer was in the ball stage, 20 kg of urea, 10 kg of potassium sulfate, and 10 kg of phosphate fertilizer were applied per mu. During the ball stage, the soil of the vegetable was kept moist.
Pest control 1 Black rot and soft rot: Soak in warm water for 20-30 minutes, or wash with 50% of dexanam ammonium for 15 minutes, wash and dry, and sow. Use 1:1:200 at the beginning of disease. Bordeaux spray, or streptomycin sulfate or chloramphenicol 50-100ppm, spray once every 7-10 days, even spray 3-4 times. 2 Downy mildew: sprayed with 500% of the anti-virus 500% solution, or 75% of chlorothalonil 500 times. 3 Aphids and Pieris: Controlled with 20% cypermethrin 3500x.
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