1, choose fertilization. Choose fertile loam or sandy loam. Mushi Fertilizer Fertilizer 3000-4000 kg base fertilizer, diammonium phosphate 12.5-15 kg per mu, potassium sulfate 5-8 kg per acre seed fertilizer, sowing or planting when applied.

2, sowing time choice. Cultivation of greenhouses in mid-February planting seedlings, planting in early April, open cultivation in early March sowing nursery, planting in late April. Autumn greenhouse cultivation, planting seedlings in mid-June, and planting in mid-July. It is cultivated in the open field in autumn and planted in early June or seeded or exposed in the open air.

3, sowing nursery methods.畦 width 1-1.2 meters, soaked bottom water per square meter sowing 5-7 grams, covering the thickness of 0.5 cm, two true leaf seedlings, 6.56.5 cm can also be used directly seedling nursery seedlings.

4, nursery management. After the emergence of the seedlings, the temperature was maintained at 20-22°C, and the temperature was controlled at 18-20°C during the normal growth period. The air-dried seedlings were cultivated 7-10 days before planting, and the temperature was lowered to 10-12°C. Water management in the nursery period must be strictly controlled watering to prevent leggy.

5, planting methods. Line spacing 60-65 cm 28-30 cm, spring cultivation of ground cover to cover the film, grab the morning market. After the prolonged growth period is prevented, high-temperature flower bulbs appear in the ball-bearing period to reduce the quality and the commercial quality.

6, field management. (1) Water management: Planting water once poured enough water, 3-5 days and then pouring a slow seedling water. After easing the seedlings to the formation of flower buds, the small water will keep the soil dry and see wet, enter the flower bud formation period to increase the amount of water, in order to promote the growth of the outer leaves, the ball swelling time 4-5 days once.

(2) Extra-root fertilizer: In the growth period, the fertilizer is applied in a timely manner according to the growth of the plant. Plant growth is weak, when nutrition is insufficient, 0.5-1% urea solution or 0.5-1% potassium dihydrogen phosphate solution is sprayed once every 7-10 days, spraying twice to promote bud enlargement, and 0.1-0.5% borax is used for leaf ball expansion. Or 0.05-0.1% ammonium molybdate solution, once every 5-7 days, plan to spray 2-3 times to prevent physiological diseases.

(3) After the cultivation of spring greenhouses, the night temperature is maintained at 10°C and during the day at 20°C. 7-8 days after the seedlings enter the normal management, during the day before the greenhouse temperature 20-22 °C, enter the ball period dropped to 18-20 °C, more than 25 °C timely ventilation, the outside minimum temperature of 10 °C above, can stay up all night ventilation, In the later period, the film can be removed and the ground can grow.

7, timely harvest. When the buds are not yet open, they are harvested in time. The buds are cut off together with the plump stems. The axillary buds on the main stem can produce lateral branches, leaving 2-3 lateral branches in general, and the upper end can produce bud clusters that can be continuously harvested. 2-3 times.

8, pest control. (1) Pest Control: 1 Yellow Stripe. The main damage seedlings, must be used after the emergence of pyrethroid insecticides such as the enemy to kill 2.0% EC 2000 times or 25% EC quickly 1500 times spray control, when sprayed once, spray again every 7 days, Meter spray 2 times. 2 small dishes. Commonly known as the Hanging Caterpillar, it is one of the most serious pests of Ganlan and broccoli in recent years. The adult is a gray-brown moth with a body length of 6-7 mm. The larvae are pointed and tailed, spindle-shaped, yellow-green, and long. About 10 mm, the first instar larvae eat the leaf flesh, leaving the epidermis, and the 3-4 instar larvae can eat the leaves into holes and nicks. In severe cases, the whole leaf is eaten into a net shape, affecting the knots. The control methods were controlled by acaricidal pesticides, and were treated with 1.8% indimethacin EC 600 times or 24.5% dichlorvos 2000 times or 58% mirabilite 1000 times.

(2) Disease control: 1 black spot. For fungal disease, the main damage to the leaves, petioles, lesions are large, round or vertical strips, grayish brown or brown, wet surface produces black moldy material, severe onset of high temperature and humidity. Control methods: can be used Zeson Zinc 70% WP 400-500 times or chlorothalonil 75% WP 500-800 times before the onset or early onset of spraying, once every 7-10 days, the meter spray 2 -3 times. 2 Downy mildew. In the case of fungal disease, yellow-green patches appeared on the leaves at the early stage of disease, and white molds grew on the back surface of the lesions. After expansion, the lesions were polygonal due to the limitation of the veins. When the disease was severe, the lesions were conjunct with yellow. In the mid-balloon period, when the temperature is high, the rainfall is high, or the humidity in the field is high, with more dew or more fog, the disease becomes prevalent, causing the whole plant to decay.

Control methods: Excessive cultivation of rainwater, pay attention to drainage and seedlings. Cultivation of greenhouses should pay attention to increase phosphorus and potassium fertilizers to improve plant resistance. After watering, attention should be paid to timely ventilation and humidity removal. 25% Rhizoctonia WP should be selected for chemical control. 0.3% seed weight should be used for seed dressing. The initial use of 75% chlorothalonil wettable powder 500-600 times or 77.2% Precrit water-soluble liquid 600-900 times or DuPont Kelu 72% wettable powder 800 times liquid control.

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