2. When the regional isolation method is used for large-area seed conservation, the plant spacing between varieties should be at least 65,438+0,000 m, which can be shortened to about 500m if there are natural isolation barriers such as mountains.
3. When a small amount of seeds are reserved by artificial isolation, paper bags can be put on before the male and female flowers open 1 ~ 2 days, or the petals can be clamped with fuses and small plastic clips. When pollinating, the newly opened male flowers are coated on the stigma of the female flowers, and then they can be put back into paper bags or clamped with petals to prevent insects from pollinating. Artificial pollination should be carried out from 6 am to 8 am.
4. Seed melons can only be harvested when they reach the physiological maturity, that is, the skin changes from green to yellowish, or from white to yellowish white, and the skin is smooth and hard, prickly and prickly. Choose the fruit with long, big, straight shape, less thorns, shallow longitudinal ditch and no wound as seed melon. The size of seed melon is closely related to rooting and budding. Average weight of single melon150 ~ 200 g. It has high maturity and quick germination. If you don't sow immediately, you should choose about eight ripe melons as seeds and store them at 12 ~ 15℃.