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采用电导法和回归系数ｂ值分析，对外引沙棘不同品种的抗寒力进行测定．结果表明，由俄罗斯引进的７个品种（其中一个品种为雄株）均较对照野生中国沙棘亚种抗寒力强；而其中的６个雌株品种又均较雄株品种的抗寒力强；其６个雌株品种的抗寒力顺序为‘楚伊沙棘”、“巨人沙棘”、‘浑金沙棘”、“金色西伯利亚沙棘”、“卡图尼礼品沙棘”、“丰产沙棘”．测定结果与１９９０～１９９６年连续７年引种试栽的越冬表现观察结果基本一致。
Using the conductivity method and the regression coefficient b value analysis, the cold hardiness of different varieties of introduced seabuckthorn was determined. The results showed that the seven varieties (one of which is male) introduced by Russia were more cold-resistant than the wild Chinese seabuckthorn subspecies; and the six of them were more cold-resistant than the male ones The order of the cold resistance of the six female plants was ’Chui Seabuckthorn’, ’Giant Seabuckthorn’, ’Giant Seabuckthorn’, ’Golden Siberian Seabuckthorn’, ’Katunia Gift Seabuckthorn’ and ’High Yield Seabuckthorn’. The results of the test were consistent with the overwintering performance of the test planted for successive 7 years from 1990 to 1996.