河北省不同生态区夏玉米丰产、稳产性品种筛选研究

Screening of High Yield and Stable Varieties of Summer Maize in Different Ecological of Hebei Province

针对河北省各地区生态条件差异大,适应不同生态条件的丰产、稳产玉米品种较少的突出问题,以当前推广的紧凑型、半紧凑型和松散型玉米为材料,采用高稳系数法对近几年河北省主要推广的夏播玉米品种在不同生态区的丰产、稳产性能进行研究和探讨。结果表明,不同生态区最适宜推广的品种如下:山前平原区为郑单958、雅玉12和浚单22,高稳系数(HSC)分别为0.85、0.87、0.86;冀东平原区为豫玉23、唐玉15和浚单20,HSC分别为1.02、0.97、0.96;黑龙港地区为蠡玉16、矮秆225,HSC分别为0.95、0.83。本研究为筛选适宜河北省不同生态区种植的丰产、稳产玉米新品种提供了依据。

It is urgently needed to select high and stable yield maize varieties adapted to different ecological conditions in Hebei Province. In this study, different summer maize materials inclluding compact, loose and intermediate types were evaluated for their yield potential and stability by using high stability coefficient method. The results showed that the most suitsble cultivars in different ecological areas were： Xundan 22 （HSC=0.86）, Yayu 22 （HSC=0.87） and Zhengdan 958 （HSC=0.85） in the Piedmont Plain region, Yuyu 23 （HSC=1.02）, Xundan 20 （HSC=0.96） and Tangyu 15 （HSC=0.97） in Jidong Plain region; Liyu 16 （HSC=0.95） and Aigan 225 （HSC=0.83） in Heilonggang region. This study provided a basis for screening new varieties with high and stable yield for planting in different ecological areas of Hebei Province.