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为了解南美藜苗期抗霜冻能力，利用主、辅试验相互验证与补充的方法，找出了南美藜２６个品种（系）苗期霜冻萎蔫、死苗开始、死苗数占５０％、死苗数占９０％和苗全部死亡等各霜冻级别的起点温度。
In order to understand frost resistance ability of quinoa seedlings in the United States, the frost wilt of 26 species (lines) of Chenopodium glaucum was found out by mutual verification and supplementation of main and auxiliary test. Miao number accounted for 90% and seedling deaths and other frost level starting temperature.