1. Variety selection choose strong growth, good heat resistance, strong disease resistance, early varieties of cauliflower. 2. Timely planting sowing depends on the characteristics of the species and the climate conditions in each place. The suitable sowing period in Zhengzhou area is from June 20 to July 10. 3. The criteria for cultivating strong seedlings and strong seedlings are as follows: calendar seedling age is 20 to 25 days, physiological seedling age is 4 to 5 true leaves, leaf area is large, stem diameter is large, and root system is developed. Before growing seedlings, nutrient soil is prepared at a ratio of 6:4 using sterile field soil (preferably to a site not planted with cruciferous vegetables) and decomposed organic fertilizer, and 500 g of compound fertilizer per cubic meter of nutrient soil is added. 100 grams of mycelium and 100 grams of trichlorfon are used to make wolfberry after blending. Before sowing, first soak the nutrient pods, sow the seeds after soaking. Each seedling is sown with 1 to 3 seeds. After sowing, it is covered with a layer of fine dry earth with a thickness of 0.5 to 1 cm. It is best to cover the shade net on a seedbed. To prevent rainstorms. 4. The proper planting of the calendar seedlings can reach 20 to 25 days and the physiological seedlings can be planted when they reach 4 true leaves. The cauliflower has a well-developed root system and requires a relatively large amount of fertilizer. Before planting, sufficient base fertilizer should be applied. Each farmhouse must have 10 cubic meters of farmyard fertilizer or 200 kg of cake fertilizer and 25 kg of compound fertilizer. The ridge is 15 centimeters high and 50 centimeters wide. The ridges are 50 centimeters wide. They are planted on the two sides of the ridge at a spacing of 40 centimeters from each Other, and 2,500 to 3,000 plants are planted per acre. 5. After field planting, two large waters were continuously poured to promote seedling growth. Afterwards, when watering, it is necessary to grasp the principle of seeing the land dry and wet to ensure root growth. After the emergence of the 9th true leaves of the seedlings, keep the ground moist. In combination with watering, topdressing urea 5 kg/mu every 10 days. When the flower ball appears, topdressing urea at a time is 20 kg/mu, and foliar surface is sprayed with potassium dihydrogen phosphate or Jian Bo solution. 6. Timely Harvest When the flower buds at the base of the bulb are slightly loose, they can be harvested. At this time, the flower bulb has been fully grown and has good quality.
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