张淑霞, 钟阳和, 魏淑秋. 实验室冷冻法鉴定2个冬小麦品种抗寒性研究[J]. 中国生态农业学报(中英文), 2003, 11(3): 38-40.
引用本文: 张淑霞, 钟阳和, 魏淑秋. 实验室冷冻法鉴定2个冬小麦品种抗寒性研究[J]. 中国生态农业学报(中英文), 2003, 11(3): 38-40.
ZHANG Shu-Xia, ZHONG Yang-He, WEI Shu-Qiu. The cold resistance of two winter wheat cultivars appraised by the freezing method in a experiment room[J]. Chinese Journal of Eco-Agriculture, 2003, 11(3): 38-40.
Citation: ZHANG Shu-Xia, ZHONG Yang-He, WEI Shu-Qiu. The cold resistance of two winter wheat cultivars appraised by the freezing method in a experiment room[J]. Chinese Journal of Eco-Agriculture, 2003, 11(3): 38-40.

实验室冷冻法鉴定2个冬小麦品种抗寒性研究

The cold resistance of two winter wheat cultivars appraised by the freezing method in a experiment room

  • 摘要: 以实验室冷冻法研究模拟东北、内蒙古自治区赤峰等地区麦田土壤温度日变化规律,测定“Norstar”、“米罗诺夫808”2个冬小麦品种的生理生态抗寒性,1月份(隆冬季节)2个冬小麦品种的死亡率为50% 时临界温度值(LT50)分别为-27.712 和-26.3℃ ,死亡率为20% 时临界温度值(LT20)分别为-26.2℃ 和-23.9℃ 。返青期2个冬小麦品种的死亡率为50% 时临界温度值分别为-12.9℃ 和-11.7"12,死亡率为20% 时临界温度值分别为-10.0℃ 和-8.9℃ 。

     

    Abstract: Imitating the regularity of temperature variation in the winter wheat field of Chifeng City,in Inner-mongolia and the northeast regions by using the freezing method.two hardier cuhivars “Norstar’’and “Mironovskaia 808’’are selected tO determine their 1etha1 temperatures.The LT20 of “Norstar” and “Mironovskaja 808”is -26.2℃ and -23.9℃ .the LT50 is-27.712 and -26.3℃ respectively in January;the freezing tolerance of the varieties in February is 1ass-hardened。their LT20 is -10.0℃ and -8.912 and the LT50 is -12.912 and -11.7℃ respectively.

     

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