1966年从前繁殖纯净的三倍体与四倍体西瓜种子,一般采用人工套袋授粉或人工去雄、隔离授粉等方法,以避免品种间杂交和种子杂乱。但这些方法只适宜于小面积的生产。1966年以来,我省开始较大面积推广多倍体西瓜。为了节约人力,简化制种手续,提高种瓜产量 In 1966 pure breeding triploid and tetraploid watermelon seeds, generally used artificial bagging pollination or artificial toxiong, isolated pollination and other methods to avoid cross-species hybridization and seed disorder. However, these methods are only suitable for small area production. Since 1966, our province started a large area to promote polyploid watermelon. In order to save manpower, simplify seed production procedures and increase the yield of melons