高级检索

烤烟—萝卜不同复种年限对土壤养分含量及烟叶产质量的影响

Effects of Different Multiple Cropping Years of Tobacco and Radish on Soil Nutrients, Tobacco Yield and Quality

  • 摘要: 在石屏县烤烟—萝卜典型推广连片示范区设置5个复种年限处理(CK、CR3、CR5、CR7、CR10),探究不同复种年限处理后植烟土壤养分的变化特征及其对烟叶产量和品质的影响。结果表明:随着复种年限的延长,土壤pH值显著下降;与CK相比,CR3、CR5处理的烤烟田间长势较好,保持了较好的干物质积累量、产量和化学成分协调性。冗余分析(RDA)发现,土壤pH值、有效磷含量是造成烟叶产量下降的主要因素;土壤中的氯含量与烟叶总糖含量、还原糖含量、钾氯比具有负相关关系,不利于烟叶品质的形成。综上,烤烟—萝卜复种7年以内,能够保证较好的烟叶产量和品质,建议烟区烤烟—萝卜复种年限以不超过7年为宜。

     

    Abstract: Five multiple planting years (CK, CR3, CR5, CR7 and CR10) were set up in the typical promotion contiguous demonstration area of tobacco and radish in Shiping County to explore the change characteristics of soil nutrients after different multiple planting years and their effects on tobacco yield and quality. The results showed that soil pH showed a significant downward trend, with tobacco-radish continuous planting. The tobacco grew well with better biomass, yield and chemical composition coordination in multiple planting 3 years, 5 years compared with cropping 1 year. Redundancy analysis (RDA) showed that soil pH value and available phosphorus content were the main factors causing the decline in tobacco yield. The soil chlorine content has a negative correlation with the total sugar content, reducing sugar content and potassium-chlorine ratio of tobacco, becoming the main factors affecting the tobacco quality. In conclusion, it could ensure better tobacco yield and quality within 7-years tobacco-radish planting. It was recommended that the multiple planting period of tobacco and radish should be less than 7 years.