How to cultivate colored cabbage
1. Characteristics The outer leaves are mostly green. The leaves have different forms depending on the variety. The autumn sowing varieties are early-maturing and mid-late-maturing varieties, and the growth period is 50-80 days. The knots are tight, the net rate is high, and the taste quality is very high. good. Strong resistance to viral diseases, downy mildew and soft rot. General 667 square meters of production of food more than 6500-7000 kg. 2. Requirements for soil and environmental conditions The roots of colored Chinese cabbage are mainly distributed in the shallow soil layer. The plantation should be in fertile, loose, aerated, water-retentive, fertilizer-conserving sandy loam soil, loam soil and light clay plots. The thickness of the soil layer is 50 cm. Above, the ph value of 7-7.5; growth and development require a mild cold climate, seedling and the ball period tolerance to micro-frozen, not high temperature, the temperature reaches 32 °C, the growth is very weak, the most suitable in about 10-22 °C The temperature of the growth; bud and seedling period suitable temperature 20-25 °C; light requirements are not strict, in the appropriate low-light conditions can also be normal growth and development, suitable for close planting, but the light is too weak to reduce the yield; nutrition In the long-day growth period, it is beneficial to photosynthesis, and short-day sunshine can promote ball-bearing. 3. Requirements for fertilizer and water conditions Colored cabbage is a vegetable with a large amount of water, and requires less water during the germination period. Since the root system is very shallow during the seedling period, it should be watered regularly. The water requirement during the continuous cropping period is large, but the watering should be appropriate to prevent moisture. Too much cause appetite, affect the roots under the bar and the heart; the ball needs more water, should be a lot of water, prompting the ball to grow rapidly. Potassium uptake was greatest throughout the growth period, followed by nitrogen and calcium, and less uptake of phosphorus and magnesium. In the cultivation of colored Chinese cabbage, fertilizers should be combined with organic fertilizers and chemical fertilizers, and top dressings should be applied according to different growth stages. 4. Cultivation Techniques At present, the seeds of these cabbages are relatively rare. Whether they are imported varieties or domestic varieties, the seed prices are correspondingly higher. Therefore, seedlings are mainly transplanted, and seedlings are transplanted with 5-6 leaves. , Choose a cool afternoon planting, with soil as little as possible to damage the root system, according to planting distance of 50-60 cm colonization, immediately after planting watering. After easing the seedlings to chase a fat tree, 667 square meters of urea applied 20 kilograms, poured water every 5 to 6 days to keep the soil wet and dry alternately. In the later stage of continuous cropping, a large amount of water was poured and seedlings were planted to promote a large amount of root development. After the start of the package, increase the amount of topdressing and watering, 667 square meters of potassium sulfate 25 kilograms, urea 20 kilograms, ditch applied or acupuncture points. Stop watering 10 days before harvest. Throughout the growing period, pay special attention to the damage of locusts and cabbage caterpillars.