How to grow purple cabbage? Management of seedlings and colonization in purple cabbage greenhouse
How to grow purple cabbage? After the Spring Festival holiday, it is the time when purple cabbage (commonly known as purple cabbage) is listed on the market. Therefore, it is very popular in the market. It is not difficult to grow purple cabbage, because purple cabbage is not only less diseaseous, but also has high planting yield and is very planted. Economic value, today Xiaobian talk about the cultivation method of purple cabbage.
First, choose early resistant varieties with good resistance
When selecting purple cabbage planting varieties, it is best to choose early-maturing varieties with good resistance. The weight of the ball is about 1kg. Since the purple cabbage is listed before and after the Spring Festival, it is necessary to arrange the time for planting cabbage. In winter and spring, purple cabbage It takes 70-90 days from sowing to colonization, 45 days from planting to harvesting, and the best time to choose when planting and planting.
Second, the nursery in the greenhouse, pre-plant management
The best season for nursery in the greenhouse is in the middle of October. Before the nursery, the nursery soil should be mixed with the nutrient soil. The seedling tray is used for seedling, and one seed is placed in each hole during sowing. After planting, the greenhouse temperature should be controlled. The temperature during the day is controlled within 25 degrees, and within 15 degrees at night, it can be emerged in two or three days. If the temperature is relatively low, the geothermal line heating facility can be used to increase the temperature. After the purple cabbage is fully emerged, the temperature can be lowered by 5 degrees, which can effectively prevent the seedlings from growing. Before the seedling grows to 3 true leaves, if the seedling tray is not very dry, there is no need to water (watering should be dry) See wet, do not dry or not), this is conducive to purple cabbage seedlings strong seedlings, for weak growth of seedlings can spray some foliar fertilizer. When the purple cabbage seedling grows to 6-8 true leaves, it can be planted. It has good cold-resistant exercise before the planting one week, the daytime temperature is controlled within 15 degrees, the nighttime temperature is controlled within 8 degrees, and the second year is At the beginning of January, it is planted in the greenhouse. Before planting, it is necessary to apply 5000kg of organic fertilizer per acre, 30kg of superphosphate, 50kg of compound fertilizer, 40cm*60cm of plant spacing when planting, and 2500 plants of one acre. It should be noted that do not pour large water before planting, because it will lower the ground temperature, you can water it with small water, and after a week of soaking, you can pour a little larger water.
Third, management after planting
One month after the planting of purple cabbage, it will enter the ball-forming period in early February. The water requirement for the ball-forming period is large. Therefore, it is necessary to provide sufficient water and fertilizer in time to topdress 2-3 times during the whole balling period. At the same time, cooperate with the application of urea. In the initial topdressing, 15kg per mu is applied, and 10kg is applied in the medium term.
Fourth, purple cabbage harvest
The best time to harvest purple cabbage is that when the purple cabbage leaves are tight, they can be harvested.
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