利用杂种优势,提高农作物的产量,是近代发展农业生产的重要途径之一。据国内外报导,西瓜品种间杂交一代优势明显,国外西瓜生产水平较高的日本,几乎百分之百利用杂交一代的西瓜种子,国内在西瓜生产上,利用杂交一代的种子面积也逐年在扩大,如湖南的湘蜜,浙江的蜜克,新疆的红优二号,广东的新澄,北京的丰收三号等。 It is one of the important ways to develop agricultural production in the modern times by utilizing heterosis and increasing the yield of crops. According to reports at home and abroad, the hybridization between watermelon varieties have obvious advantages. In Japan, where the production level of watermelon in foreign countries is relatively high, almost 100% of the hybridized watermelon seeds are used. In China, the seed area of ​​hybrid generation is also expanding year by year. Xiangmi, the honey in Zhejiang, the Hongyou in Xinjiang, the new Chengguang in Guangdong, the harvest in Beijing and so on.