Fertilizing

Select the loamy soil that retains fertilizer and water, fine ground preparation, per mu into the base fertilizer rotted pig manure, compost 3,000 to 4,000 kilograms of calcium phosphate 25 kilograms, turned into the soil mixed evenly, ploughing and ploughing, the soil particles to play fine. The beds are generally made flat beds, but summer cultivation should be made small raised beds.

Planting

Open field cultivation, planting should be carried out in the afternoon, protected cultivation should be carried out in the morning. After the date of planting is determined, in the afternoon of the day before planting to the seedbed watering a thorough water, in order to dig the next day. The day of planting with the digging of seedlings, immediately transported to the planting plot, according to a certain row spacing for planting seedlings.

Generally early maturing species rows and plants spaced 25 cm × 20 cm, medium maturing species rows and plants spaced 30 cm × 22 cm, late maturing species rows and plants spaced 30 cm × 30 cm. Seedlings should not be planted deep, to the soil surface of the seedling pile and the border planted flat or slightly lower 1 cm. Seedlings planted, followed by watering to restore growth.

Watering and fertilization

Timely watering according to the temperature and humidity at that time. Watering is appropriately controlled during the growth period of leaf clusters after seedling retarding. Into the vegetable moss formation period and harvesting period, to increase the number of watering, often keep the soil moist. Base fertilizer and fertilizer, fertilizer with water, generally 3 to 4 days after the seedling should be applied a small amount of nitrogen fertilizer or chicken manure diluted, buds and moss when the appropriate fast-acting fertilizer or human urine. After the main moss harvest, to promote the growth of side moss, should be reapplied 2 to 3 times of fertilizer.

Mid-tillage soil cultivation

Kale pre-growth is slow, easy to produce weeds between the rows of plants, to timely mid-tillage weeding. With the growth of the plant, the stem from thin to thick, the base is thin, the upper part of the larger, the formation of the head heavy, to be combined with the cultivation of soil, fertilizer, it is best to apply 1,000 to 2,000 kilograms of organic fertilizer per acre.