于2010和2011年对甘肃省3个大豆种植区各示范县进行了抽样调查,收集甘肃大豆不同种植区的主栽品种及产量相关数据。在此基础上分区统计,并采用多元逐步回归判断不同种植区影响大豆产量的关键因素。结果表明,各种植区大豆主要为春播,同时沿黄灌区与陇东旱塬区的部分区域存在夏播。河西灌区的种植密度显著高于沿黄灌区和陇东旱塬区。大豆单产为河西灌区最高,沿黄灌区居中,陇东旱塬区最低。在农艺和产量性状中,株高的高低排序依次为河西灌区、沿黄灌区、陇东旱塬区。陇东旱塬区的单株荚数最高,其次为河西灌区,沿黄灌区最低。单株粒数的高低排序与单株荚数的排序相反。陇东旱塬区的百粒重最高,其次是沿黄灌区,河西灌区显著低于前2个种植区。品质性状中,平均蛋白质含量高低依次为沿黄灌区、陇东旱塬区、河西灌区。脂肪含量为河西灌区最高,陇东旱塬区次之,沿黄灌区最低。蛋脂总量高低排序依次为沿黄灌区、陇东旱塬区、河西灌区。根据各种植区对产量建立的逐步回归方程的标准化回归系数来看,株高是影响河西灌区和沿黄灌区大豆产量的主要因素,影响陇东旱塬区大豆产量的首要因素为单株粒数,然后依次为种植密度、单株荚数、百粒重和株高。 In 2010 and 2011, three sampling counties in three soybean growing areas of Gansu Province were sampled to collect the main cultivars and yield related data of different planting areas in Gansu Province. On this basis, the statistical analysis of the district, and the use of multiple stepwise regression to determine the different planting areas affect the yield of soybean key factors. The results showed that all planting soybean was mainly sowing in spring, while summer sowing existed in some areas along the Yellow River Irrigation Area and Longdong Arid Highland. The planting density of Hexi Irrigation Area was significantly higher than that of the Yellow River Irrigation Area and Longdong Arid Highland. The yield of soybean was the highest in Hexi Irrigation Area, the middle of Yellow River Irrigation Area, and the lowest in Longdong Arid Highland. In agronomic and yield traits, the order of plant height was Hexi Irrigation District, Huanghuang Irrigation District and Longdong Arid Highland. The pods per plant were the highest in Longdong Gansu, followed by Hexi Irrigation and the lowest along the Yellow Irrigation. The order of grain number per plant is opposite to the order of pods per plant. Longdong arid highland grain weight is highest, followed by the Yellow River Irrigation District, Hexi Irrigation Area was significantly lower than the first two planting areas. In the quality traits, the average protein content followed the Yellow River Irrigation District, the Longdong Arid Highland and the Hexi Irrigation Area. Fat content is the highest in Hexi Irrigation District, followed by Longdong Arid Highland, and the lowest in Yellow River Irrigation District. The order of the total amount of egg yolk followed by the Yellow Irrigation District, Longdong dryland, Hexi Irrigation District. According to the standardized regression coefficients of the stepwise regression equations established for the yield of various plantations, the plant height is the main factor affecting the soybean yield in Hexi Irrigation Area and the Yellow River Irrigation Area. The primary factor affecting the soybean yield in the Gansu Plain is the single grain , Followed by planting density, pods per plant, 100-grain weight and plant height.