1977年,我们从中国农科院引进了中育1号(又名红花)、中育2号(又名燕红)、北京无子22号、北京2号(四倍体)西瓜新品种,并且连续3年在种瓜历史悠久的南郊区艾庄大队进行了试种,结果胜于本地西瓜。其特点是: ①高产优质:一般亩产均达2,500-3,500斤,含糖量9-12％。比当地西瓜增产20％以上,含糖量高3-4％;②早熟抗病:座果后35天成熟,比当地品种早熟7天,且抗枯萎病、白粉病;③座果率高:当 In 1977, we introduced a new variety of watermelon, Zhongyu No.1 (also known as safflower), Zhongyu No.2 (aka Yan Hong), Beijing No.22 and Beijing No.2 (tetraploid) from the Chinese Academy of Agricultural Sciences , And for three consecutive years in the southern suburbs of the species of melon Ai Zhuang team trial, the result is better than the local watermelon. Its features are: ① high yield and quality: average per mu reached 2,500-3,500 pounds, 9-12% sugar content. Than the local watermelon yield more than 20%, high sugar content of 3-4%; ② precocious disease: 35 days after fruit maturity, 7 days earlier than the local varieties and resistance to blight, powdery mildew; ③ fruit rate: when