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自六十年代开始,桐梓县先后从外地引进小麦品种(包括高世代材料)200多个(份),经鉴定推广的品种有15个,占6％。1966年以“阿波”更换了老品种,1975年又以迟播早熟的“早熟阿波”为主的品种更换阿波。这对加速实现我县小麦良种化,促成稻麦、包麦两熟耕作制的发展,起了很大作用。1979年小麦播种面积从1950年的4万亩发展到18万亩,扩大4.5倍,单产提高半倍到1倍,总产增长十倍,改变了粮食作物生产结构。
Since the 1960s, Tongzi County has successively introduced more than 200 wheat varieties (including high-generation materials) from other places and 15 varieties (6%) have been identified and promoted. In 1966, “Abo” replaced the old breed, and in 1975, it later replaced Abo with the breed of “early maturity Abo” that delayed the sowing. This accelerated the realization of our county wheat seed production, promote the development of rice, wheat, wheat double cropping system played a significant role. In 1979, the sown area of wheat increased from 4.5 million mu in 1950 to 180,000 mu, with a 4.5-fold increase. The yield per plant increased half and one times and the total output increased tenfold, changing the production structure of grain crops.