1. Cabbage seedling cultivation technology
Cabbage cultivation uses seedling transplanting. Most spring cabbage is grown early-maturing. In cold areas such as Northeast, Northwest and Inner Mongolia, seedlings are usually raised in greenhouses from February to March, with a nursery period of 60-80 days. There are two methods of raising seedlings in North China: one is in December Seedlings are raised in Yangqi from mid-to-early January and planted from February to March.
The second is to raise seedlings in a plastic greenhouse in February, with a seedling period of 40-50 days; autumn cabbage seedlings are raised in June-July, and the seedling period is generally 35-40 days; summer cabbage 4 ——The seedlings are raised in May, and the seedling raising period is 30-40 days.
2. Cabbage planting and planting density
Cabbage and root systems begin to move when the soil temperature is above 5°C. Therefore, spring cabbage can be grown when the daily average temperature reaches 6°C. When C or above, colonization can begin. In the north, where there is drought in spring, flat borders are often used for planting. In summer, when it is hot and rainy, try to cover as much soil as possible to avoid damaging the roots. Water after planting to facilitate survival.
Rational dense planting is one of the important technical measures to increase yield. The suitable nutritional area for cabbage should be determined according to the variety and the length of the growth period. The number of plants per acre and the spacing between plants are roughly as follows:
Choose seedbeds with easy drainage and irrigation, loose and fertile soil, combined with deep plowing Use an appropriate amount of decomposed organic fertilizer and ternary compound fertilizer, water thoroughly before sowing, and level the border surface when the soil moisture content is moderate.
After leveling, the seeding rate per acre of seedbed is 300 to 400 grams. After sowing, it is slightly suppressed, sprayed with 50% carbendazim solution 500 times, and covered with a sunshade net in a small shed or greenhouse. When the seedlings grow to 3 to 4 true leaves, they are falsely planted once. During the seedling raising process, cover them with sunshade nets from 9 a.m. to 3 p.m. on sunny and hot days.
3. Field management of cabbage
After cabbage is planted, it is necessary to pour water to slow down the seedlings. At this time, due to the low temperature, the soil must be plowed and loosened in time after watering to facilitate moisture conservation. And increase the ground temperature to promote the recovery and growth of the root system. Entering the rosette stage, the plant needs to form a powerful assimilation organ to absorb more water and fertilizer.
The first top dressing can be carried out, applying 15-20kg of nitrogen fertilizer per acre, and fully supplying water to promote the growth of leaf balls. After the leaf balls are formed, watering should be controlled to prevent cracking and facilitate storage.
Extended information:
Therapeutic effects of cabbage
1. Assist in lowering cholesterol. Cabbage is rich in B vitamins, vitamin C, and dietary fiber, which can help gastrointestinal motility, promote detoxification and defecation, and reduce the concentration of cholesterol in the blood.
2. Reduce fat. The propylene glycol acid in cabbage can inhibit the conversion of sugar into fat and reduce the accumulation of fat in the human body. It is a natural "food for weight loss".
3. Reduce stomach problems. Cabbage contains vitamin U, which has the effect of protecting the gastrointestinal mucosa and can help prevent duodenal or gastric ulcers. In addition, vitamin U has detoxification effects and can relieve gastric bloating caused by frequent social drinking or hangovers.
4. Reduce the risk of cancer. Cabbage also contains the trace element molybdenum, which can reduce the body's production of nitrosamines; it contains sulforaphane and isothiocyanate, which can inhibit cell mutation. These nutrients can reduce the risk of cancer in the human body.
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