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通过３年的引种试验表明，紫穗槐和刺槐的地上部分在试验地区（年均温２．５℃、１月份气温－１６．１℃）受到不同程度的低温伤害，但它们的根系可安全越冬。３年的自然低温诱导，提高了根系的抗寒性，它们的ＬＴ５０分别降低了３．２℃和２．０℃；植物组织起始伤害温度也分别降低了２．０℃和２．６℃。低温伤害测定说明，它们的根系在低于某温度点时，会出现组织软化、褐变等现象，同时伴有甜味出现。用Ｌｏｇｉｓｔｉｃ曲线方程可以较好地描述低温对组织的伤害过程。
The three-year introductory experiments showed that the aboveground parts of Amorpha fruticosa and Robinia pseudoacacia suffered different degrees of low temperature damage in the experimental area (average annual temperature 2.5 ℃, January temperature-16.1 ℃), but their roots could be safe Winter. Three years of natural low temperature induction increased the cold resistance of the roots, their LT50 decreased by 3.2 ℃ and 2.0 ℃ respectively, and the initial damage temperature of plant tissues decreased by 2.0 ℃ and 2.6 ℃ . Hypothermia injury test shows that when their roots below a certain temperature point, there will be tissue softening, browning and other phenomena, accompanied by the emergence of sweetness. Logistic curve equation can describe the damage process of hypothermia to tissue well.