83—2是山东省莱州市朱桥良种试验站站长、农民育种家李忠声历经十载育成的夏谷高产新品种。1988年该站种植的83—2丰产田,经省、地、市三级谷子验收小组验收,亩产达到549.9公斤,创全国谷子高产纪录。尔后,在十多个省市累计推广90多万亩,均表现了生长期短、高产、抗病,抗倒伏、耐旱、耐瘠、适应性强等优点。1989年莱州市遭百年不遇的特大干旱,很多旱田玉米绝产,而在旱田种植的83—2谷子仍获得亩产257.5公斤的好收成。1990年在谷子生长前期阴雨连绵,光照不足,秸秆徒长的情况下,莱州市的百亩丰产方和枣庄市的三 83-2 is the pilot of Zhuqiao Improved Seed Experiment Station in Laizhou City, Shandong Province, and Li Zhongsheng, a farmer’s breeder, has been cultivating a new high-yielding summer variety of Summer Valley. In 1988, the 83-2 high-yielding field planted at this station was checked and accepted by the provincial, prefectural and municipal cereal acceptance teams. The yield per mu reached 549.9 kilograms, a record high in the whole country. Later, more than 90 million mu of land were popularized in more than 10 provinces and cities, all of which showed the advantages of short growth period, high yield, disease resistance, lodging resistance, drought tolerance, barren resistance and strong adaptability. In 1989, Laizhou City was hit by a century-long severe drought. Many dry-corn corn was still absolutely dead, while the 83-2 millet planted in the dry land was still getting a good yield of 257.5 kilograms per mu. In 1990 before the millet growing in the rainy, inadequate lighting, stubborn long case, Laizhou City, Baoshen high yield side and Zaozhuang three