Cabbage varieties include Tianjin green, Jiaozhou cabbage, green show, Tai'an cabbage, Xiqing and other varieties. Among them, Tianjin green cabbage was once exported overseas specialty, mainly because of the environment and natural conditions are excellent, more suitable for cabbage growth. Jiaozhou cabbage planting selection of drainage and irrigation conditions, away from industrial and mining areas and other places, to pay attention to avoid heavy stubble cabbage crops, but also to avoid continuous cropping with other cruciferous crops.

A, cabbage varieties

1, Tianjin green

(1) Tianjin green cabbage was once exported overseas specialties, mainly because of the environment of Tianjin natural conditions are excellent, very suitable for the growth of cabbage, can be said to be the representative of China's cabbage, foreign countries are called China green.

(2) This variety is of excellent quality among the many vegetables produced in Tianjin, which has a long history of cultivating cabbages, and has cultivated this variety under long-term natural and man-made selection.

2, Jiaozhou cabbage

(1) Jiaozhou cabbage production area of the unique microclimate and superior geographic conditions, so that the Jiaozhou cabbage quality unique. Jiaozhou cabbage production area of the main types of landforms are slightly sloping flat, along the river flat, shallow flat depressions, depressions along the river, and so on. Soil type is mainly brown soil, sand ginger black soil, tidal soil.

(2) Jiaozhou cabbage planting to choose good drainage and irrigation conditions, away from industrial and mining areas, air, irrigation water, soil and other places without pollution. Requirements for flat terrain, drainage and irrigation is convenient, deep soil tillage, soil fertility is relatively high, attention should be paid to avoid heavy crops of cabbage crops, but also to avoid continuous cropping with other cruciferous crops.

3, green show

(1) green show is the two sides of China and Japan **** with the research and breeding, is suitable for spring, summer and fall cultivation of cabbage varieties. Heat-resistant, disease-resistant, productive and so on. This variety of plant shape is beautiful, leaf bearing compact, adult plants near the petiole at the girdle, leaf color is green, leaf blade is oval, full margin.

(2) The growth cycle is very short, about a month to complete the growth, so you can invest less, and the return is very fast.

4, Tai'an cabbage

Tai'an area from ancient times have been planting cabbage, the ancient book records that this place is all over the cabbage, the variety is divided into yellow buds and green buds, which yellow buds of cabbage quality is better because of the yellow buds of cabbage cabbage gangs are thin, very little water. Now there are even more new varieties, which are cultivated year-round and supplied year after year.

5, Joyful

(1) Joyful is a new variety of cabbage, belonging to the spring and fall early type. The reproductive period is about 55 days, and each plant is about 37.1 centimeters tall with a spread of about 62.6 centimeters.

(2) The spring sowing time in Shandong is from March 10 to March 31, which needs to be covered with film, and the fall sowing time is from August 15 to August 20. As a small cabbage with 3,000-3,500 plants per acre planting, and as a baby cabbage with 8,000-10,000 plants per acre planting, as a baby cabbage with mu seeding not less than 300 grams, and should not be sown in a single grain, to avoid the lack of seedling, the phenomenon of weak seedling occurs.

Second, the early spring cold greenhouse cabbage planting technology

1, early spring cabbage to choose a short reproductive period, low temperature resistance and low temperature growth rate of varieties, such as spring and summer king, spring yellow. Early spring cabbage greenhouse cultivation can be planted before and after April 10, greenhouse heating conditions or quilt, grass curtains and other cover insulation facilities, its planting period can also be appropriate to advance.

2, in the greenhouse seedlings to keep the temperature in the seedbed as far as possible is not less than 15 ℃, so that you can avoid the cabbage through the vernalization, you can also use the cultivation of cabbage greenhouse to seedlings.

3, choose onion and garlic stubble soil or non-cruciferous vegetable stubble field soil 4 parts, rotted stable fertilizer or charcoal soil 4 parts, rotted dung surface 1 part, fine sand 1 part. After sieving, every 1 square meter of nutrient soil plus 0.5-1 kg of calcium superphosphate, three compound fertilizer 2 kg, and then mixed with some appropriate fine sand and grass ash, but also mixed into the appropriate amount of fungicides, such as carbendazim.

4, the cabbage seeds evenly sown, after sowing mulch 1 cm thick or so, and then scrape with a wooden board, cover the film for heat preservation and moisturizing. In the seedling period the temperature should be controlled above 13 ℃, after sowing the daytime temperature is maintained at 28-30 ℃, the night temperature is maintained at 18-20 ℃.

5, about 3 days after sowing the seedling will come out, flush seedling after removing the film, this time the daytime temperature should be controlled at 20-25 ℃, the night temperature control at 15-17 ℃. Seedlings in a timely manner after the emergence of seedlings, 2-3 true leaves when only selected to retain a robust growth of seedlings, and sprayed 1 time 500 times the solution of fungicide, to prevent the occurrence of sudden collapse disease. Later, spray 1-2 times of foliar fertilizer according to the depth of the seedling color, in the drought time to water small, 7 days before planting to stop watering, while increasing the amount of ventilation, the seedlings for low temperature exercise. When the age of the seedlings is 25-30 days, there are 4-5 true leaves for planting.

6, 30 days before planting, the choice of drip-free anti-aging film laid on the greenhouse. Each acre of 4000-5000 kg of fully rotted high-quality organic fertilizer, 20-25 kg of three yuan compound fertilizer. Spreading and ditching combined, first 60% of the organic fertilizer spread evenly, tilling 20 cm deep, and then according to the row spacing of 60 cm ditch sunshine to improve the ground temperature. In 15 days before planting the remaining 40% of organic fertilizer and all fertilizer strip applied to the ditch, and then break the ridge clamping fertilizer, ridge buckling film.

7, in the cabbage seedlings 3 leaves 1 heart to 4 leaves period of time for planting, first in the film according to the plant spacing of 30 cm, 10 cm deep, 10 cm in diameter holes, planting time to eliminate the heart of the deformed seedlings, each hole planted 1 strong seedling. After planting, water well, and then use more moist soil to hole around the film pressure.

8, cabbage planting should pay attention to cold insulation, night temperature should be maintained at 13 ℃ or more, 5-7 days after planting as far as possible do not ventilate, so that the temperature in the shed to maintain the temperature of 30-35 ℃ or so, with the method of increasing the temperature in the shed to increase the ground temperature.