【摘要】 为了评价不同饲用高粱品种萌发期耐盐碱指标,筛选适宜西辽河平原盐碱地区种植的饲用高粱品种,采用NaCl、Na₂SO₄、NaHCO₃、Na₂CO₃按1∶9∶9∶1摩尔比混合,处理浓度为100 mmol/L,混合盐碱模拟盐碱处理,以不加盐碱的蒸馏水为对照,测定发芽指标和根芽长度。采用相关性分析、主成分分析以及隶属函数分析法相结合的方法。结果表明,通过主成分分析,将盐碱处理下饲用高粱萌发期的7个单项指标转换成3个彼此独立综合指标,代表了试验材料92.320%的信息;根据耐盐综合评价值D值得出试验所选11个饲用高粱品种的耐盐碱性,由高到低排序依次为BJ0602、BJ0603、桑根草、牧乐、美国巨人、2180、N5212274、N52K1009、1230、SU9002、1220,发芽率（GR）、根长（RL）和活力指数（VI）是饲用高粱萌发期耐盐碱性评价指标。更多还原

【Abstract】 In order to evaluate the saline-alkali tolerance index of different forage sorghum varieties during germination, forage sorghum varieties suitable for planting in saline-alkali areas of Xiliaohe Plain were screened. NaCl, Na₂SO₄, NaHCO₃ and Na₂CO₃ were mixed according to the molar ratio of 1∶9∶9∶1, and the treatment concentration was 100 mmol/L. Mixed saline-alkali simulated saline-alkali treatment was used. The germination index and root bud length were measured with distilled water without saline-alkali as control. We adopted the methods of correlation analysis, correlation analysis, principal component analysis and membership function analysis. The results showed that through principal component analysis, 7 single indexes of forage sorghum germination period under saline-alkali treatment were converted into 3 independent comprehensive indexes, representing 92.320% of the information of test materials. According to the comprehensive evaluation value D of salt tolerance, the order of salt tolerance and alkalinity of 11 forage sorghum varieties was BJ0602 > BJ0603 > Mulberry root grass> Mele > American giant > 2180 > N5212274 > N52 K1009 > 1230 > SU9002 > 1220. Germination rate（GR）, root length（RL） and vigor index（VI） were the evaluation indexes of salt and alkaline tolerance of forage sorghum.更多还原