农业科技与装备

甘肃省通渭县华家岭镇为典型高寒半干旱山区，无工业污染，有发展绿色苦荞种植的天然条件，但存在品种单一、管理粗放、缺乏绿色标准体系等问题。以“定苦荞1号”“定苦荞2号”“黔苦5号”3个引进品种为材料开展3类田间试验，揭示了苦荞生长对高寒瘠薄环境的响应规律。结果显示，“黔苦5号”“定苦荞2号”高寒适配性最优，生育期合适、抗逆性强，产量较当地品种分别提升32.4%、27.5%。单株粒数、千粒重为核心产量性状，有机肥配施减量复合肥及中等密度为最优模式，结果可为西北高寒旱作区苦荞产业发展提供支撑。

Huajialing Town in Tongwei County, Gansu, a typical alpine semi-arid mountain area free of industrial pollution, has natural advantages for the cultivation of green Fagopyrum tataricum(L.) Gaertn. Yet, it faces issues like single variety planting, extensive management and lack of a green standard system. This paper used three introduced varieties of Dingku No.1, Dingku No.2 and Qianku No. 5 for field experiments to explore the growth response of the Fagopyrum tataricum(L.) Gaertn to the alpine and infertile environment. Results indicated that Qianku No.5 and Dingku No.2 were best adapted to alpine area, with suitable growth periods, strong stress resistance and yields increased by 32.4% and 27.5% respectively compared to the local varieties. The number of grains per plant and 1000-grain weight were key to yield. The optimal green and high-yield cultivation mode was using organic and reduced compound fertilizers together at a medium planting density. This research provides support for the development of Fagopyrum tataricum(L.) Gaertn. industry in alpine dry farming areas of Northwest China.