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解放前的旧中国,由于国民党的反动统治,谈不上发展农业科学,更谈不上推广玉米杂交种。解放后,在毛主席和党中央的英明领导下,农业科学研究工作得到迅速发展。解放初期,我国就开始推广玉米品种间杂交种,到五十年代末和六十年代初,玉米自交系间双交种开始推广。经过无产阶级文化大革命,杂交玉米的选育和推广,出现了崭新的局面。据1976年全国杂交玉米科研和推广会议报道,1975年全国推广玉米杂交种占播种面积的55％,原来
Before the liberation of old China, due to the Kuomintang’s reactionary rule, no mention of the development of agricultural sciences, let alone the promotion of corn hybrids. After the liberation, under the wise leadership of Chairman Mao and the Central Party Committee, agricultural science research has witnessed rapid development. In the early period of liberation, China began to promote hybrid varieties of maize varieties. By the late 1950s and early 1960s, double crossbreeds between maize inbred lines began to be popularized. After the Great Proletarian Cultural Revolution, the breeding and popularization of hybrid corn, a brand new situation has emerged. According to the National Hybrid Corn Research and Extension Conference in 1976, it was reported that in 1975, corn hybrids nationwide accounted for 55% of the sown area.