在无产阶级文化大革命的推动下,我院自1971年起,在北京市延庆,通县等地设立科技服务组,开展西瓜科研工作。五年来,我们和当地贫下中农一起,一面推广普及西瓜优良品种,一面采取内外结合、南北结合一年多代试验的办法,进行西瓜常规育种和多倍体育种,经过多代的选育,初步选出一批具有独特优良性状的新类型品种。 Under the impetus of the Great Proletarian Cultural Revolution, our hospital has set up science and technology service groups in Yanqing, Tong County and other places in Beijing since 1971 to carry out scientific research on watermelon. In the past five years, we worked with the poor peasants and poor peasants in our country to popularize the fine varieties of watermelon and to conduct routine breeding and polyploid breeding of watermelons in combination with the test of more than a year in North and South China. After several generations of breeding, Selected a number of new varieties with unique good traits.