In the middle and late September, the fruits will be picked in time after turning black and soft. The plants with strong growth, round crown, about 20 years old without diseases and pests were selected for seed collection. After the fruit is picked, remove the impurities of the fruit, and then place it in a cool and ventilated place to dry naturally. Do not pile it too thick, and turn it frequently to prevent the fruit from mildew and deterioration.
Before sowing in spring, we should treat the seeds, soak them in water for 2 days, wait for the peel to be soft, then pull them out, and then roll them with a roller, but don't crush the seed core. After removing the oil from the middle core, add twice the amount of river sand into the middle core for mixing, and then roll them, expose the pink seed shell, and then clean them.
After rolling the seeds, we also need to carry out germination treatment, put the seeds into warm water for germination treatment, 20 days before sowing, soak the seeds in warm water of about 50 ℃ for 2 to 3 times every day, each time for half an hour, after cooling, pull out and cover them with wet straw curtains, when more than half of the seeds are exposed, we can carry out sowing..
The soil with good drainage can be selected, and the sandy loam is the best. The soil should be disinfected before sowing. After sowing, cover with soil for 2cm and press it gently with hands. Then pour the water once. Remember to pour it through. After that, keep the soil moist and remove the weeds in time. When the seedlings grow to 10 cm, they can be transplanted.
