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试验研究了在冀西北高寒区冷凉气候条件下脱毒微型薯的高效生产技术。
In this paper the high efficient technology of virus free minituber production of potato under cold condition in the cold area of northwestern Hebei was studied.
结果表明：11个紫花苜蓿品种在川西北高寒区越冬率均达到90%以上；
The results indicated that: as for the 11 alfalfa varieties, their winter surviving rate in the north west Sichuan province reached over 90 percent;
以哈阿公路为例对高寒区水泥混凝土路面加铺沥青层进行修复的方法进行了研究。
Take example as Harbin to Acheng Road, do some research of repair cold area cement concrete road that cover with asphalt.
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