Cultivation Techniques of Greenhouse Cabbage in Winter

Also known as vegetable sprouts, the flowering moss and tender leaves of the heart of the cabbage are edible parts, which are crisp and tender, with good flavor and rich nutrition. The cultivation techniques are as follows:

1. Cultivate strong seedlings:

1. Variety selection: choose the late maturing variety Qingliu Chixin with strong cold resistance and the main side moss.

2. Sowing: Use greenhouse seedlings in the beginning of October. Preparation of nutrient soil: mix with 1200 kg of fertile field soil and 800 kg of rotted manure fertilizer, add 3 kg of diammonium and mix well. Pour enough water after leveling the seedbed, cover with film and bake for 3-5 days to increase the temperature of the border. The amount of seeds used for one acre is 50g, the seeds are seeded directly, covered with 1cm of fine soil after sowing, and a small arch rod is inserted on the border.

3. Seedling split: Remove the small arch shed on the seedbed after emergence to reduce the humidity, properly ventilate before splitting, and strengthen the low-temperature exercise of the seedlings. Prepare the seedling divider about 15 days before the seedling division (the same method as the seedling bed). The seedling division should be conducted on a clear day, and the seedling division should be 10cm square.

4. Seedling management: temperature management at the seedling stage should be carried out in stages: in order to promote the rapid emergence of seedlings during the germination period, the daily temperature should be maintained at 25-30 ℃, the night temperature should not be less than 15 ℃, the slow seedling period after emergence, daytime temperature Maintain it at 20-25 ° C and night temperature around 15 ° C. Slowly lower the temperature after slow seedling watering. Maintain 15-20 ° C during the day and night temperature above 10 ° C. The seedling bed is watered once every 4 to 5 days before planting, and the seedlings can be dug and stored the next day.

2. Planting: Before the planting, sufficient base fertilizer should be applied, 5000kg of high-quality decomposed ring fertilizer, 30kg of phosphorus and potassium compound fertilizer, 20-30 days after sowing, planting when the true leaves are 5-6 pieces, the planting density is 18 × 22cm, before planting Buckle the shed to increase the ground temperature.

3. Field management after planting:

1. Water and fertilizer management: on the basis of the planting water, another slow seedling water is poured 7 to 8 days after the planting, and cultivating and weeding is required to promote root growth. To enter the formation period and the harvest period of the vegetable sedge, we must increase the number of watering times to maintain the soil moisture. During the whole growth period of the cabbage, we must topdress 1-2 times and apply 10 to 15 kg of urea per mu.

2. Temperature management: temperature management is very important for the production of cabbages in a protected area. The slow seedling period after planting is maintained at 20-25 ° C during the day and 15-20 ° C at night. The temperature should be kept at 18-22 ° C and the night temperature at 12-18 ° C. From the current bud to the harvest period, the daily temperature should be kept at 15-20 ° C and the night temperature at 10-15 ° C. According to the temperature requirements for the development of Chinese cabbage, the length of time for opening the straw mat and the time for vents should be adjusted during production.

4. Harvesting: The standard for harvesting Chinese cabbage is: "Qikouhua" is harvested, that is, the height of the flower stalk is roughly the same height as the outer leaf apex, and the flower bud is about to open.

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