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研究了不同浓度的碳酸钠对光果甘草和苦豆子种子萌发的影响。结果表明:在不同浓度的碳酸钠盐(Na2CO3)条件下,光果甘草和苦豆子种子的发芽势、发芽率、发芽指数、活力指数和胚根胚芽生长长度均随着Na2CO3浓度的增加而下降。但Na2CO3浓度提升到0.9%时,光果甘草种子还能保持73%的发芽率,而苦豆子种子发芽率只有26%。光果甘草种子发芽的最适Na2CO3浓度为0.9%,临界浓度为1.2%,极限浓度为2.1%。而苦豆子种子发芽的最适Na2CO3浓度为0.6%,临界浓度在0.6%和0.9%之间,极限浓度为1.8%。光果甘草种子的发芽指数和0.9%以上浓度的活力指数都比苦豆子高,而盐害率比苦豆子种子低很多。Na2CO3浓度提高到0.9%时,光果甘草种子的盐害率只有26.71%,而苦豆子种子的为70.28%,由此可以确定,光果甘草种子萌发抵抗Na2CO3盐的能力比苦豆子种子强,能适应含Na2CO3盐量达0.9%以上的恶劣的碱土生态环境。而苦豆子种子萌发抗Na2CO3盐的能力相对较弱,只能适应Na2CO3含量为0.6%的碱性土壤条件。
The effects of different concentrations of sodium carbonate on seed germination of Glycyrrhiza glabra and Sophora alopecuroids were studied. The results showed that the germination potential, germination rate, germination index, vigor index and radicle germinating length of Glycyrrhiza uralensis and Sophora alopecuroides seeds decreased with the increase of Na2CO3 concentration under different Na2CO3 concentrations . However, when the concentration of Na2CO3 increased to 0.9%, the photosynthesis of Glycyrrhiza glabra still maintained a germination rate of 73%, while the germination rate of Sophora flavescens seeds was only 26%. Light licorice seed germination optimum Na2CO3 concentration of 0.9%, the critical concentration of 1.2%, the ultimate concentration of 2.1%. However, the optimum Na2CO3 concentration for seed germination was 0.6%, the critical concentration was 0.6% and 0.9%, and the limit concentration was 1.8%. Light licorice germination index and more than 0.9% concentration of vitality index than the Sophora alopecuroides, and the salt damage rate is much lower than the Sophora japonica seed. When the concentration of Na2CO3 increased to 0.9%, the salt damage rate of Glycyrrhiza glabra seeds was only 26.71%, while that of Sophora alopecuroides seeds was 70.28%. From this, it was confirmed that the germination of Glycyrrhiza glabra seeds was stronger than that of Sophora alopecuroides seed germination, It can adapt to the harsh alkaline earth environment with the salt content of Na2CO3 up to 0.9%. However, the seed germination of Sophora alopecuroides is relatively weaker than that of Na2CO3 salt, and it can only adapt to alkaline soil with the content of Na2CO3 as 0.6%.