I. Variety selection
The spring planting bitter gourd generally has a long harvest period. Should use strong branching, good heat resistance and suitable for local consumption habits. Such as spring vegetables, spring vegetables, vegetables, spring Yan Yan, blue and white bitter gourd, large meat on the 1st, large meat on the 3rd, Zhuzhou Changbai bitter gourd and so on.
Second, nursery
1, sowing period and sowing amount
In the middle of March, the Yangtze River Basin sows in the cold bed or in the hotbed in late March; in North China, the cold bed raises seedlings in late March. There are certain differences between different varieties of bitter gourd. Under normal circumstances 250 ~ 300g per mu. If the germination rate of the variety is low, the amount of seeds can be increased appropriately.
2, soaking germination
The bitter gourd skin is thick, it is difficult to absorb water, and it is difficult to germinate. Can be used first about 55 °C warm water hot seed until the natural cooling and then soaked more than 12 hours.
3, sowing
Put the well-matched nutritious soil into the seedbed with a soil thickness of about 10cm, soak the water and broadcast the seed directly to the nutrient soil. Or put the well-prepared nutritious soil into the nutrient bowl, soak the water and put the seeds. After sowing, the cover soil is about 2 to 3cm, and the temperature above 25°C facilitates seed emergence. When the temperature exceeds 32 °C above the shade net.
4. Seedling management
After emergence, the temperature was appropriately lowered. The seedbed temperature was maintained at 25 to 30°C during the day and 15 to 18°C ​​at night, and the water was kept at a moderate level to maintain the soil moisture. Timely weeding, ventilation, moisturizing, timely spray sterilization to prevent disease. Seedlings have 2 to 4 true leaves that can be transplanted and colonized. About one week before planting, the seedlings were made.
5, colonization
In general, the width of 1.5 to 2 meters wide, including 2 rows per plant, with a spacing of about 50 cm. Planting period is usually carried out when soil temperature is stable above 12°C, but planting should be done as early as possible. The depth of planting seedlings is suitable for the seedlings cotyledon to expose the ground.
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