High-yield cultivation techniques of broccoli

Green cauliflower, also known as broccoli, tender cauliflower and broccoli, is not only tender, delicious, nutritious, but also adaptable and easy to cultivate. it is a kind of nutrition and health care high-grade vegetable with great development prospect.

Cultivation season

Green cauliflower can be cultivated in spring and autumn. Spring planting is more than sunny border seedling raising in mid-late January, the seedling period is 50 to 60 days, it is planted in the open field in the middle and late March, and the harvest begins in the middle and late May; in autumn, it is sown and raised seedlings in the first and middle of July, planted in the field in the first and middle of August, and harvested in the middle and late October.

Soil preparation, fertilization and planting

Green vegetable peanut grows strongly and needs a large amount of fertilizer, so it must be combined with soil preparation to apply sufficient base fertilizer.

General mu application of high-quality ring fertilizer 5000 kg, rotten dung dry 500 to 1000 kg, calcium superphosphate 30 to 40 kg, plant ash 50 kg. After the application of basic fertilizer, deep ploughing and fine raking, and then leveling, into a flat bed 1.3 to 1.5 meters wide. When the green cauliflower seedlings grow to 5 to 6 true leaves, generally 2 rows are planted on each border, the plant spacing is 30 to 40 cm, and the planting density is about 2500 plants per mu.

Early-maturing varieties can be planted in close density, and about 3000 plants per mu are suitable.

Fertilizer and water management

Green cauliflower likes fertilizer and water, and topdressing and watering by stages is the key to high quality and high yield. The main type of topdressing fertilizer was nitrogen fertilizer, which entered the flower head formation stage, and the appropriate application of phosphorus and potassium fertilizer promoted the rapid growth of the flower head; the top and lateral heads of green cauliflower were harvested for many times, and topdressing should be applied in time after each harvest to promote the growth of the lateral flower head. Green cauliflower needs a lot of water, so it should be watered in time to keep the soil moist in rosette stage and flower head formation period. In rainy areas or seasons, timely drainage should be carried out to prevent stagnant water retting.

Harvest

It is better to harvest green cauliflower when the bulb at the top of the plant is fully enlarged and the bud is not yet open; too late harvest is easy to cause loose balls and flowering. When harvesting, cut off the lower part of the flower bulb with a flower stem of about 10 cm. After the terminal flower bulb is harvested, the axillary buds of the plant germinate and rapidly grow into lateral branches, and the top of the dry lateral branch forms a rosette, that is, the lateral flower bulb; when the lateral bulb grows to a certain size and the bud has not yet opened, it can be harvested again. In this way, it can be harvested for 2 to 3 times in a row.