两种防冻液对胎里红枣枝条抗冻性的影响

为了解两种防冻液的使用效果，测定了不同浓度的两种防冻液处理的胎里红枣树枝条分别在﹣16℃、﹣21℃、﹣26℃的低温条件下处理12h的电解质渗出率变化情况。结果表明标典化工生产的防冻液处理的枝条在-21℃时电解质渗出率＜50%，而对照则＞50%，说明该防冻液具有一定的防冻效果，能使处理过的胎里红枣枝条比没处理的枝条所耐受的临界低温降低4～5℃；而自制防冻液处理的枝条电解质渗出率和对照之间无明显差别，说明其起不到防冻效果。

Effect of Two kinds of Antifreeze on the Cold Resistance of Tailihong Jujube

In order to research the effects of two kinds of antifreeze, the electrolyte leakage rate changes of ‘Tailihong’jujube branches were studied under treatments at -16℃, -21℃ and -26℃ for 12 h with different concentration of antifreeze. The results showed that the electrolyte leakage rate of the branches at -21℃ and -26℃ was lower than 50% with antifreeze made by Zhengzhou Biaodian Chemical Co.,Ltd, while the rate of control was bigger than 50%. The research results proved that this antifreeze product of Zhengzhou Biaodian Chemical Co.,Ltd possessed some antifreezing effects and could make the tolerant critical temperature 4℃ to 5℃ lower than control for‘Tailihong’jujube branches. However, there were no significant differences between self-made antifreeze and control which revealed self-made antifreeze with no antifreezing effect on‘Tailihong’ jujube branches under these experiment conditions.