为确定藜麦在甘肃省的适宜种植区，通过对甘肃省12个生态区(7市12县)种植的藜麦进行田间调查及分析检测，探讨海拔和经纬度对藜麦生育期、长势及籽粒品质的影响。结果表明，地理位置对藜麦生育期、长势和籽粒品质均具有显著影响，变异程度由高到低依次为生育期、产量、品质、株高。藜麦生育期与海拔呈极显著负相关(P < 0.01)，而与经纬度呈显著相关(P < 0.05)，籽粒产量与纬度呈显著正相关；株高与海拔和经度均呈显著负相关(P < 0.05)，粗蛋白含量和海拔与生育期均呈极显著负相关(P < 0.01)；粗脂肪与经度呈极显著正相关(P < 0.01)，而与海拔呈显著负相关(P < 0.05)。多元回归分析表明，株高、产量和品质均与海拔存在显著回归关系，说明海拔是影响藜麦生育期、长势和品质的主要生态因子，高海拔区种植的藜麦植株生育期明显增长，粗蛋白则显著降低。

In order to determine the suitable planting area of quinoa in Gansu province， field investigation and analysis were conducted on quinoa planted in 12 ecological areas(7 cities and 12 counties) in Gansu province， and the effects of altitude， longitude and latitude on growth period， growth trend and grain quality of quinoa were investigated. The results showed that the geographical location had significant influence on the growth period， growth trend and grain quality of quinoa， and the variation degree was in the order of growth period， yield， quality and plant height from high to low. The growth period of quinoa was significantly negatively correlated with altitude(P < 0.01)， but significantly correlated with latitude and longitude(P < 0.05)， and the grain yield was significantly positively correlated with latitude. Plant height was significantly negatively correlated with altitude and longitude(P < 0.05)， and crude protein content and altitude were significantly negatively correlated with growth period(P < 0.01). Crude fat was significantly positively correlated with longitude (P < 0.01) and negatively correlated with altitude(P < 0.05). Multiple regression analysis showed that plant height， yield and quality had significant regression relationship with altitude， which indicated that altitude was the main ecological factor affecting the growth period， growth and quality of quinoa. The growth period of quinoa planted in high altitude area increased significantly， while crude protein decreased significantly.

S519

甘肃省科技计划项目(18ZD2NA008-2)；中央引导地方科技发展专项“特色藜麦产业培育及科技扶贫模式推广”；甘肃省现代农业科技支撑体系区域创新中心重点科技项目(2019GAAS51)。