Brassica oleracea L .: annual or biennial herbaceous plant of the family Brassica, Brassica, biennial herb, frosted. Short and stout annual stalks fleshy, unbranched, green or gray-green. The basal leaves are thick, wrapped into spheroids, oblate, milky white or light green; the biennial stems have branches and have stem leaves. Basal leaves are rounded at the apex, basally narrowed to a very short, wide-winged petiole, and undulating at the edges with inconspicuous serrations; About 4.5 cm, about 1 cm wide, holding the stem. Racemes terminal and axillary; flowers pale yellow, 2-2.5 cm in diameter; pedicels 7-15 mm long; sepals erect, linearly oblong; petals broadly oblong-ovate or suborbicular, apically absent, base abrupt Narrowed into claws, 5-7 mm long. Long-horned fruit cylindrical, slightly compressed on both sides, prominent midvein, beak-conical; fruit stalk thick, erect. Seeds spherical, brown. Flowering in April and fruit in May.
Cabbage loves mild, moist, and plenty of light. More cold-resistant, also has the ability to adapt to high temperatures. The growth temperature is 15-20 . The fleshy stems are prone to fibrosis if they are exposed to high temperatures above 30 ° C. The choice of soil is not strict, but it is suitable for planting in humus-rich clay loam or sandy loam. Cabbage seedlings must pass vernalization at 0-10 ° C, and then be pumped, flowered, and bear fruit under long sunlight and moderate temperature.
Cabbage is bred by seed sowing. The sowing method is as follows:
Seed treatment: In order to prevent seeds from carrying germs, soaking seeds with carbendazim for 24 hours before sowing.
Disinfection of seedbeds : 20 days before sowing, irrigate the soil with 50ml of formalin and 3kg of water, and then cover with film for 5 days. 50% carbendazim wettable powder can also be used to mix nutrient soil to disinfect soil.
Cultivation of strong seedlings: Mid-December began to use small arch sheds to raise seedlings. To prevent premature seedlings, as the seedling age is prone to sucking.
Seedbed management: Generally, seedling emerges 5 days after sowing. Check the seedbed every day. Pay attention to ventilation and anti-burning seedlings when the temperature is high. Cover the film to prevent the seedlings from freezing when the temperature is low. Add water about once a week depending on the condition; when the seedlings reach 2 When the leaves are at the heart, the seedlings must be prevented from growing too long to ensure that the seedlings are of the same size. When the seedlings are more than 0.5 cm thick, try to keep the temperature above 15 ° C to avoid passing through the vernalization stage; let the air condense 7 days before transplanting. When the seedlings grow to 5-6 true leaves, transplanting can be implemented.
Cabbage has few diseases, mainly aphids and cabbage worms.
Feeling : High-quality purple cabbage feels heavy when you pick it up, indicating that purple cabbage has sufficient moisture and compact structure, which will taste better, while low-quality purple cabbage will feel lighter when you pick it up, and you will feel insufficient juice when you eat it. , Poor taste.
Look at the appearance : high-quality purple cabbage looks bright and shiny, while low-quality purple cabbage looks dull and does not have gloss. [2]
Kale is a very old vegetable, which was made into delicious food in the ancient Greek and Roman times more than 4,000 years ago. In today's Europe, wild cabbages can still be seen growing on the barren beaches of the barren and cold chalk rocks.
