[Temperature Management]
After planting, until the seedlings are warmed up and promoted by the closed greenhouse, the air temperature in the shed is kept at 25-30°C during the day and 15-20°C at night. About 7 days, the seedlings can be thawed, and after the seedlings are tempered, the “four-stage temperature change†management is implemented, so that the temperature in the shed can be maintained at 25-30°C at noon, 25-20°C in the afternoon, 20-15°C in the middle of the night, and 15 at the middle of the night. -12°C. The specific approach is to open air vents at 30°C in the morning and 25°C in the afternoon; when the night temperature is high, the night air must be released, and when the air temperature is low, cover the film with a layer of film insulation.
[light management]
The core of lighting management is to extend the lighting time as much as possible. It can use brightening facilities or winter sunny early morning cover early cover, early spring cover and late cover to increase the light, it is snow and rain, but also to uncover the straw screen to make Guamiao see 4-6 hours of scattered light . After every day the volume is drafted, the sundries on the film should be wiped off, and the film should be cleaned regularly to maintain good light transmission. After the rain and snow, it will be pulled early to increase the light. Even when the sky suddenly turned cloudy, grasshoppers should be gradually spaced apart, gradually increasing light. In order to increase the utilization of light, a light curtain can be placed in front of the post roof post. The height of the light curtain should be 50-80 cm higher than the growth point of cucumber. With the growth of seedlings, the light curtain must move upwards. You can also brush the white wall of the north, it is also necessary to fill the light with fluorescent lamps
[Fertilizer Management]
The principle of fertilizing cucumbers and cucumbers in solar greenhouses is to use enough base fertilizer to lightly weigh and weight before dressing. The top dressing method is to flush with the water film. After the roots are harvested, the cucumbers enter the peak period of growth. At this time, they must keep up with the fertilizers, and pay special attention to the application of phosphorus and potassium fertilizers. In combination with watering, 15 to 20 kilograms of urea, 5 kilograms of potassium sulfate, or 15 to 20 kilograms of diammonium phosphate are applied for each acre of fertilizer. If chicken manure is used for topdressing, it can be applied to the water at a rate of 0.3 cubic meters per mu, which is about 100 kg. Water every 3 days or so, every time the water is applied. With drip irrigation, topdressing can be dissolved in irrigation water. After mid-February, on the basis of the original, additional nitrogen fertilizer such as urea was added.
ã€Water Management】
The irrigation generally includes planting water, rooting water, primary melon water, irrigation during the initial period, irrigation during the low temperature period, irrigation during the waist period, and irrigation and late irrigation during the melon period. The rooting water is poured when the seedlings are newly rooted. The water is suitable for planting 12-13 days. When the root melon grows to about 15 centimeters, it is necessary to timely fill the first melon water. Irrigation during the harvest period is carried out before the harvest of the root guava, which helps to increase the yield and subsequent growth of the melon. In the low-temperature period irrigation, the principles of less irrigation and ground irrigation should be mastered. The number of irrigation times and the amount of water should be appropriately increased during the period of waist and guava. According to climatic conditions, it should be done for 5 days. The watermelon irrigation period should guarantee 2-3 days of water. Late irrigation delays plant senescence and extends the harvest period. Each watering should be arranged on a sunny morning.
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