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丹粳1号(早杂选)系辽宁省丹东市农科所,1976年于海南用早熟抗病的不育系早丰A与晚熟大穗的恢复系C57—11制成杂交种,继后以集团和株系相结合的方法,经南繁加代选育而成。自1981年起,经所内品种比较试验和省(市)区域试验及生产示范到1984年在我省南部黄海稻区大面积试种以来,表现了高产稳产,抗逆性较强和适应性较广的特点。1986年全省种植面积37万余亩,再获丰收,一般亩产500公斤左右,最高亩产650公斤。最近经辽宁省品种审定委员会审定通过,命名为丹粳1号。
Danjing 1 (early hybrid selection) Department of Liaoning Province, Dandong City Institute of Agricultural Sciences in Hainan in 1976 with a precocious disease-resistant sterile line early Feng A and late maturity big spike restorer C57-11 made hybrids, followed by The combination of group and strain method, the South Fanjia generation of breeding. Since 1981, since the variety test and provincial (city) regional trial and production demonstration in 1984 to a large area in the southern Yellow Sea rice region trial, the performance of high and stable yield, strong resistance and adaptability than Wide features. In 1986, the province planted more than 370,000 mu of land and gained a second harvest. Generally, it produced about 500 kg of mu per mu and 650 kg of mu per mu. Recently approved by the Liaoning Province Variety Approval Committee, named Danjing No. 1.