成单18是四川省农科院作物所用自选系698-3与外引系齐205组配而成的高产抗逆大穗型玉米杂交种,于1997年通过四川省品种审定委员会的审定,已被推荐为全省两个主栽品种之一;且被四川省科委作为突破性品种列入全省的“增粮工程计划”;目前,成单18已在四川省种植70多万亩。 Chengdan 18 is a high-yielding and stress-tolerant maize hybrid with high yield and resistance to large spikes maize selected by Sichuan Provincial Academy of Agricultural Crops, selected by 698-3 and introduced at 205, and passed the approval of Sichuan Provincial Variety Approval Committee in 1997 Was recommended as one of the two main cultivars in the province; and was included in Sichuan Provincial Science and Technology Commission as a breakthrough breed in the province’s “grain-increasing projects”; at present, Cheng Dan 18 has planted more than 70 million mu in Sichuan Province.