The Main Points of Field Cucumber Intercropping Bitter Gourd in Winter

1, before the melon period: this period of 40 to 50 days, the main direction of management is to prevent wilting, and promote graft wound healing and hair root. After 3 days of colonization, the cucumbers were not allowed to be wetted and dispersed in the air within 3 days. The temperature was maintained at 22 to 28°C, and the temperature was 28 to 32°C during the day and 20 to 24°C at night. The air relative humidity was 85 to 90% during the day and 90 to 95% at night. Cover the flower buds (curtains) around noon on sunny days to prevent seedlings from wilting. After 3 days, if the temperature is as high as 38-40°C around noon, the ventilation is cooled to 30°C. After that, the indoor maximum daytime temperature is not to exceed 32°C, and the time for closing the ventilation openings and closing the grasshoppers in the afternoon is gradually postponed. The nighttime temperature is not higher than 18°C. °C.

2. After easing the seedlings to the beginning of the guava: 8 to 10 hours of light every day; diligently wipe the shed film to maintain good light transmission performance of the shed film; hang the aluminum-plated reflective screen and increase the light. The temperature in the greenhouse is 24 to 30°C during the day, 14 to 19°C at night, and a minimum temperature of 10°C in the early morning. The ground temperature is 2~3°C lower than the temperature during the day and 3~4°C higher during the night.

Under the condition that the cover film reduces the evaporation of soil moisture, the soil water content is kept at 70 to 80% by reducing the watering. Before the arrival of the cold wave and cloudy snow day, the greenhouse was closed, and after the grass was covered at night, the entire plastic film was covered. Remove the snow on the shed film in time and uncover the mulberry film at the right time. When the snow is in the daytime, you should also uncover the grasshopper in time to fight for weak light in the room. In order to keep warm, it is generally not ventilated, but when the relative humidity of the air in the greenhouse exceeds 85%, it can be ventilated and vented in a short time at noon. On the first day after the sunny day suddenly turns cloudy, we must not uncover all the opaque coverings such as grasshoppers. We should “unveil the flowers, spray warm water, and prevent flashes”. Bed, multiple rotations uncovered cover. When cucumbers and bitter gourd plants show signs of wilting during sunny days, timely cover the shade with grass and spray 15-20°C warm water to prevent flashing dead trees.

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