一、套袋人工授粉法。此方法适用于小面积栽培制种。选用四倍体作母本,健壮的普通二倍体西瓜作父本,在母本雌花开放前一天下午的4～6时,用小纸袋将雌花花冠套住,防止混交传粉。次日早上开花时对父本雄花进行采粉,授粉时取下套在雌花上的 First, bagging artificial pollination method. This method is suitable for small-scale cultivation of seed. Use tetraploid as the mother, the robust common diploid watermelon as the male parent in the female flower before the opening of the day before 4 pm to 6 pm, with a small bag of female flower corolla nest to prevent mixed with pollination. Flowers were collected from the male male flowers during flowering the next morning, and the flowers were removed from the female flowers during pollination