1. Timing of cultivation
The best planting time for large cabbage is in the middle of august of each year, because large cabbage is a tender plant with low temperature requirements and lower temperatures in the autumn, which can be kept below 25 degrees, which helps the large cabbage to grow fast
2. Selective fertilization
Bellows are suitable for growing in fertile and soft soils, and when growing them, they need to be selected for a backwinding, flat ground and organically rich soil, where they are applied well-developed farm and pie fattening to make them more fertile and promote the growth of large cabbage。
3. Sowing reproduction
When growing cabbage in the autumn, full round seeds will need to be immersed in warm water for 10-20 minutes to absorb sufficient moisture, and the large cabbage seeds will be spread evenly over the soil surface, then covered with a plastic sheet of film to be wet and healthyly grown。
4. Conservation management
In the growing process, cabbage requires adequate nutrients, and in the growing of cabbage, it is necessary to use corroded compound fertilizer every 15 days during the planting of the plant to accelerate its growth and to spray potassium phosphate or urea on the leaves of the cabbage。
The method of breeding cabbage
1. Selection of seedbeds
Good soil is a key factor in seedling, and in the case of large cabbage, water-preserving soil, with a total pore of not less than 60 per cent, and with an organic content, is selected for conversion with a rotary tiller, which will break the mud quickly and ensure that it is flattened。
2. Treatment of seeds
Before growing, large cabbage is selected for good commercial and resistant seeds, which are immersed for one day in warm water, which is constantly staggered during the period, when the water temperature is reduced to 20°c, the seeds are extracted, wrapped in towels, and then sprung in an environment at 30°c。
3. Start breeding
When treated, large cabbage seeds are dug in the soil, water is poured through the bottom, the soil is kept wet, then four seeds are placed in each of the dens, the germinate rate increases, and when large cabbage is planted, the soil is covered on the surface of the seed and plastic sheeting is covered。
Four, planting
When large cabbage is grown up to about 5-10 cm, it is removed from the soil, weak and poorly developed seedlings are removed, and strong cabbage is planted into fertile, easily drained plots, and water is then poured over once。
The place where the cabbage is made
The cabbage fields are located in north china and are widely cultivated throughout china. The cabbage is more cold-tolerant, prefers cold weather and is therefore suitable for growing during cold seasons. When cultivated during high-temperature seasons, they are prone to disease or poor quality and low yield, so they are not suitable for summer cultivation. It is very resistant to cold temperatures。
After temperatures of up to -3°c, growth can be restored if the temperature increases gradually, but if the temperature continues to fall to -11°c after reaching -8°c, it will not be able to return to normal growth. The cabbage is suitable for planting in fertile, water-conserving and organically rich soil along the border with sandy and black and yellow soil, in sandy soil prone to leaky faeces, and, even less, in poorly drained clay。
