低温胁迫对烤烟生长和产质量的影响

Effects of Low Temperature Stress on the Growth and Yield of Flue-cured Tobacco

为探讨持续低温胁迫的生产对策,对受冻烟苗采取了剪除心叶培育腋芽的处理。试验结果表明,烟苗受冻后剪除心叶处理各生育期比对照推迟,农艺性状较差;产量、产值、上等烟比例、中上等烟比例与对照差异达显著或极显著水平;经济性状3月9日剪除心叶的处理略好于3月4日剪除心叶的处理,但差异不显著。可见,烟苗受冻后不宜过早采取措施,应待烟株转入正常生长后再采取措施。

In order to explore the prevention strategies of tobacco from being damaged by continuous low temperature stress,we clipped leaves damaged by low temperature stress to foster axillaries.The results showed that the growth period of the tobacco seedling that had been cut off leaf postponed than control treatment,the agronomic traits of the treatment was poorer than that of control,and the economic traits of the control was best in all treatment.Compared with the control,the differences of A treatment or B treatment,as the yield and yield value and high proportion of tobacco leaf and medium high proportion of tobacco leaf were significant or very significant.The economic traits of B treatment were slightly better than that of A treatment,but the differences were not significantly.In conclusion,it is inappropriate to take premature measures on tobacco seedlings damaged by frost,taking measures at time point after the damaged tobacco change into normal growth will be better.