Field management methods:
1, seedling easing period: check the field in time to replenish the seedlings within 2 days of transplanting broccoli, give enough nutrients and water, loosen the soil more, and keep the lower soil moist.
2. Plowing management: proper plowing and weed eradication, generally one plowing, one deep loosening combined with fertilizer, and two artificial weed eradication, which should be done early and diligently.
3, fertilizer method: the use of artificial or mechanical strip fertilizer method, in the planting of 7-10 days, chase urea 5 kg / mu, potassium sulfate 10 / kg.
15-20 days chase the second fertilizer, chase compound fertilizer 25 kg / mu, potassium sulfate 10 / kg.
Flower bulb formation early spray potassium dihydrogen phosphate, boron treasure or 0.05%-0.10% borax and ammonium molybdate solution once.
To improve the quality of flower bulbs, reduce the occurrence of yellow buds and scorched thunder.
At the same time mu spraying plant growth agents to promote the expansion of flower bulbs, increase crop nutrition, improve crop resistance to disease.
4, irrigation methods: broccoli requires slightly more water than other crops, in addition to the seedling period should be appropriate control of soil moisture.
Other growth and development periods should ensure adequate water.
Generally use artificial furrow irrigation or mechanical sprinkler irrigation, the best use of advanced sprinkler irrigation equipment.
5, remove side branches: top flower ball is a specialized variety, should be removed before the appearance of flower ball side branches (buds).
Top side of the flower ball dual-use varieties of lateral branches more, generally stay on the top of the strong lateral branches 1-2 the rest of the removal, to reduce nutrient consumption.
When 60%-80% of the main stem bulbs harvested, watering and fertilizer, to promote the growth of side branches of the bulb, when the side bulbs grow to a diameter of 10 cm or so when harvested.
6, temperature: in the flower bulb began to form, the normal temperature at about 25 ℃.
The high temperature of 30 ℃ in the field can not be more than three consecutive days, more than three days should be taken in time to control the temperature measures.
Generally take artificial leaf cover on the flower bulb or thatch, artificial rainfall and other methods to control high temperature.
Prevent the flower bulb from scorched thunder, yellow grains, scattered balls.
7. Moisture: broccoli has a high demand for water, the foliage evaporation is large, the amount of water should be increased appropriately.
Broccoli in planting, seedling period, rosette period, ball period, should maintain the field water holding capacity of 60-70%.
Watering should be timely after each fertilizer, watering should be appropriately controlled after the rosette period, and watering should be timely after the diameter of flower bulb is 2-3 cm.
After planting, generally watering 4-5 times, 7 days before harvest to stop watering, but also according to the situation in time to replenish water.