I. Seedling management
(1) Soil-covered seedlings: After most of the seedlings have emerged, remove the thin film. After the seedlings are flushed, covering a fine layer of 0.3-0.5 cm in fine soil at noon on the sunny day can prevent cracks on the surface of the plant and protect the pods. After the cotyledons are unfolded, select the sunny seedlings in the afternoon on the afternoon and the seedlings should be 1.5-2.0 cm away from the seedlings. An additional layer of 0.5 cm of fine soil can reduce the humidity of the seedbed and prevent the occurrence of disease at the seedling stage, and it is also conducive to taking root.
(2) Separating seedlings: Seedlings of 1-2 true leaves of seedlings were planted at intervals of 12-15 cm.
(3) Temperature and humidity management of seedbeds: Through the measures of insulation, cold protection and ventilation, it is the key to cultivate strong seedlings to control the appropriate temperature. Green cauliflower has different requirements for temperature during different growth periods, so different management measures should be taken.
1 From sowing to Miao Qi. In order to facilitate the emergence of seed germination, the temperature should be properly controlled. Generally kept at 20-25°C during the day and about 15°C at night, it is advisable to have a flexible grasp based on the growth status of the seedlings. The temperature at night is too high, suitable for long; daytime temperature is too low, seedlings grow slowly, seedlings are small and dull.
2 From the seedlings to the sub-seedlings. After the emergence of seedlings, the seedbed temperature should be appropriately reduced to prevent leggy. It is controlled at 15-20°C during the day and 10-12°C at night.
3 From seedlings to seedlings. In order to promote easing of seedlings, the plastic film should be as tight as possible to control higher temperatures. Keep it at 20-25°C during the day and around 15°C at night. 3-4 days after seedlings, the seedlings were irrigated and the temporary cover on the seedling bed was withdrawn.
4 from seedlings to planting. After easing the seedlings, in order to prevent seedling growth, the temperature should be lowered appropriately. 15-20°C during the day and 10°C during the night. In order to adapt the seedlings to the environmental conditions after planting, the seedlings must be cultivated at low temperature before planting: the seedlings should be poured 5 to 6 days before planting, and the amount of water should be soaked in nutrient soil. After 2 days, the seedlings and seedlings are cut and cut. , perform cold exercise.
Second, to do the planting planting
Before 10-15 days of planting, 5000-6000 kg of organic fertilizer is applied per mu, 50 kg of superphosphate, 7 kg of plant ash or potassium chloride. Deep plowing 30 cm after fertilization, and then flatten it. When the flat raft is planted in trenches, or when it is used as a small sorghum, 25-30 kilograms of compound fertilizer and 20-25 kilograms of urea are applied per acre, and the soil fertilizer is thoroughly mixed.
If you make a small sorghum, you should have a width of 80 cm, a height of 15 cm, and a width of 30 cm. Then planted by row spacing 50 cm, plant spacing 40 cm.
If it is flat, it is 120 centimeters wide and it is planted at a spacing of 45 centimeters. The method is to make a ridge, the ridge distance is 45 centimeters, the ridge is laid on the membrane, and then the ridge is planted at a spacing of 45 centimeters. Plant 2400-2600 trees per acre. Water immediately after planting.
Third, management after planting
1. Watering. Planting water when planting, planting water is sufficient when the water can not be seedlings, strengthen the cultivator plan, promote root development. Before and after flower bud differentiation and flower bulb hypertrophy require large amounts of water, avoid excessive dryness.
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