低温处理下不同菌肥浓度对水稻种子萌发和生长的影响

Effects of different bacterial manure concentrations on the germination and growth of rice seeds under low temperature treatment

低温冷害严重影响到水稻种子萌发和幼苗生长,应用生物菌肥有利水稻克服冷害,促进萌发.研究分析了不同菌肥浓度下的水稻种子发芽势、发芽率、发芽指数及萌发活力指数、株高、茎粗、含水率和根冠比等指标,以期明确不同菌肥浓度对低温处理后的水稻种子发芽能力和生长状况的影响.结果表明,实验过程整体呈现菌肥处理下发芽势、发芽率、发芽指数、萌发活力指数及株高低于对照,但在幼苗茎粗、含水率和根冠比方面优于对照的趋势.当为A10处理时,水稻种子发芽势、发芽率、发芽指数及株高均优于其他菌肥浓度处理且与对照组差异不显著(P>0.05);水稻植株茎粗、含水率及根冠比均优于其他处理,各处理间差异均显著(P<0.05).因此,A10处理效果最好,加入菌肥有助于提高低温下水稻幼苗生长效果.

Low temperature and cold damage seriously affect rice seed germination and seedling growth.The application of biological bacterial fertilizer is beneficial to rice for overcoming cold and damage,and to promote germination.This study analyzed the germination potential,germination rate,germination index,germination vigor index,plant height,stem diameter,water content and root-shoot ratio of rice seeds under different bacterial fertilizer concentrations,in order to clarify the effects of different bacterial fertilizer concentrations on low temperature treatment of rice seed germination ability and growth status.The results showed that the overall process of the experiment showed that the germination vigor,germination rate,germination index,germination vitality index and plant height under the treatment of bacterial fertilizer were lower than those of the control,but the seedling stem thickness,water content and root-shoot ratio were better than the control.When A10 treatment was carried out,the germination potential,germination rate,germination index and plant height of rice seed were all better than those of other bacterial fertilizer concentrations,and there was no significant difference between the two groups(P>0.05);diameter water content and ratio of root to crown of rice plant were better than other treatments,and the differences between the treatments were significant(P<0.05).Therefore,the A10 treatment has the best effect,and the addition of bacterial fertilizer can help improve the growth of rice seedlings under low temperature.