不同处理对甘草种子发芽率和出苗率的影响

Influence of Different Treatments on Germination and Seedling Rate of Glycyrrhiza uralensis Seed

目的:探索甘草种子萌发和出苗最适宜的处理方式,为甘草育苗和大田播种提供技术依据。方法:通过对甘草(Glycyrrhiza uralensis Fisch.)种子进行不同处理,比较其发芽率和出苗率变化情况。结果:不同处理方法对甘草种子发芽率有显著性影响,其中机械研磨处理的甘草种子发芽率最高,其次为浓硫酸处理3 h的甘草种子;浓硫酸处理、机械研磨与高温浸种处理的出苗率显著高于对照的出苗率,其中随着浓硫酸处理时间的延长,甘草种子的出苗率呈明显增高而后又下降的趋势。结论:和其他处理相比,机械研磨和硫酸浸种3 h的处理发芽率和出苗率有明显提高,适宜于大面积种植甘草时进行种子处理。

Objective： To explore the optimum method for germination and seedling rate of licorice seed, and pro- vide technical basis for licorice seedling-raising and planting in field. Methods： The change of the germination and seedling rate of licorice seeds by treated with different processing method was compared. Results： It showed that the different methods had significant effects on licorice seed germination rate, the germination rate of licorice seeds with mechanical grinding was the highest, followed by treated 3 h with sulfuric acid. The seedling rate of sulfuric acid, mechanical grinding and high tempera- ture-soaking were significantly higher than that of the control. With the increasing of soaking time by sulfuric acid, the seedling rate of licorice seeds decreased after an initial increase. Conclusion ： Compared with other methods, the germination and seed- ling rate of licorice seeds with mechanical grinding and sulfuric acid for 3 h have significant increase, are suitable for planting licorice in large area.