AMMI模型和GGE双标图对宁夏不同气候类型区苦荞品种稳产性适应性分析

Analysis of Stable Yield Adaptability of Fagopyrum tataricum Varieties in Different Climate Regions of Ningxia Using AMMI Model and GGE Double Label Map

为准确评价参试苦荞新品种的丰产性、稳产性和生态适应性,利用AMMI模型和GGE双标图对5个参试品种在宁夏南部山区的半干旱区、半干旱易旱区和干旱区的6县(区)多年多点试验数据进行了品种的丰产性、稳产性、适应性和试点代表性分析及综合评价。通过主成分PCA与品种的稳定性(Dg)和试点的稳产性(De)分析,筛选出适宜在宁夏南部山区种植的丰产性稳定性和适应性好的品种为晋苦荞2号和川荞3号,晋苦荞2号产量为1 671~2 593 kg·hm^(-2),比对照平均增产17.3%。川荞3号的产量为1 474~2 513 kg·hm^(-2),与对照相比平均增产7.5%;试点辨别力代表性以半干旱易旱区的海原县,中部干旱带的同心县及半干旱区的西吉县比较理想;试验经历了干旱年份、正常年份和丰水年份,参试品种在干旱年份较丰水年份产量减产28.0%~45.3%。

In order to accurately evaluate the high-yield,stable yield,and ecological adaptability of the new varieties of Fagopyrum tataricum,the AMMI model and GGE double label map were used to analyze the mprehensively evaluate the high-yield,stable yield,and pilot representativeness of five Fagopyrum tataricum varieties in six counties(districts)of semi-arid areas,semi-arid prone areas,and central arid zones in southern Ningxia.By analyzed the stability(Dg)of principal component PCA and ariety,as well as the yield stability(De)of experimental points,suitable varieties with high yield stability and good adaptability for planting in the southern mountainous areas of Ningxia were selected as Jinkuqiao 2 and Chuanqiao 3.The yield of Jinkuqiao 2 was 1671-2593 kg·ha^(-1),with an average increase of 17.3%compared to the control variety.The yield of Chuanqiao 3 was 1474-2513 kg·ha^(-1),with an average increase of 7.5%compared to the control variety.The experimental sites were ideal for Haiyuan County,which represents the semi-arid and drought prone areas,Tongxin County in the central arid zone,and Xiji County in the semi-arid areas.The experiment went through drought years,normal years,and flood years and the tested varieties experienced a 28.0%—45.3%reduction in yield compared to flood years in drought years.