Management of bitter gourd after planting to the initial stage of sitting: After 80 to 90 days of bitter gourd being planted in the greenhouse, the main vine stretched to 1 to 1.5 meters and began to sit on the first melon. During this period, the cultivation and management of the first symbiotic crops in the shed was combined with proper management of bitter gourd.
Management of slow seedling stage: The growth and development of bitter gourd seedling stage mainly depends on the light, temperature and humidity. In a certain range, strong light, high temperature, and high humidity are beneficial to the growth and development of bitter gourd, so slow seedlings are fast, and the growth is fast; otherwise, slow seedlings are slow, and the growth and development are also slow. On the basis of intact soil mulching, watering and covering with mulch for thermal insulation, generally no watering or shading during the slow seedling period, and the greenhouse should be ventilated for a short period of time before and after noon to control the temperature in the shed. During the day, 25-30 degrees Celsius and at night 15-22 degrees Celsius; the relative humidity of the air is maintained at 70% to 80% during the day, 85% to 95% at night, and the relative humidity of the soil is maintained at about 85%.
Management of the spreading stage: 10 days after the planting of bitter gourd seedlings, a new leaf grows and the root melon begins to sit. This period is called the spreading stage. After entering this period, it is transferred to the conventional management of greenhouse cultivation, so that the ecological environment conditions in the greenhouse are suitable for the growth and development of the first-grown symbiotic crops and the growth and development of bitter gourd.
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