Temperature management, the spring cauliflower cultivation in the early growth period in the low temperature season, a small amount of growth, and the broccoli plant size and flower bulb production are closely related, and the late growth temperature increased rapidly, flower bud bud differentiation and flower bulb formation of broccoli . Therefore, in the management of the field, pre-growth requires good insulation to prevent freezing. The cultivation of greenhouses should be conducted in a timely manner to keep the greenhouse closed. The open cultivation should be conducted as soon as possible to open the ditch to prevent freezing. In case of sudden frost or freezing weather, remedial measures should be taken to cover the floating surface of the sunshade. In the late growth period, after the temperature in April has risen, the cultivation of the facilities should be done in a timely manner, and the ventilation and cooling should be done in time.

Fertilizer management should pay attention to the application of basal fertilizer, promote early-onset seedlings, slightly control fertilizer after watering, and improve resistance. After the weather warms up in late February, it is necessary to top-dress fertilizers in a timely manner so as to promote the development of the plant and promote it in the end. In particular, during the expansion of flower bulbs, it is necessary to pay attention to fertilizer and water, combined with cultivating and weeding, and generally use 1 kg of compound fertilizer and 8 kg of urea per acre to promote flower growth. The ball is swollen. In order to prevent hollow stems and buds, 15 to 20 days before budding, 16% of liquid boron fertilizer was sprayed twice to 3 times for foliar dressing. The temperature of early stage of broccoli growth is low, generally no irrigation is needed. In order to avoid the sudden drop of soil temperature caused by watering, the watering should be carried out at noon, and the amount of watering should not be too much. After the temperature rises, it is necessary to maintain a certain degree of humidity in the soil, especially during the ball stage, avoid drought, so as not to inhibit the formation of flower balls, resulting in decreased yield. After the heavy rain that has been cultivated on the open ground, drain the water in a timely manner. Do not collect water. Spray the fungicide in time to prevent the occurrence and spread of the disease.

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