兴山烟区土壤有机质管理对土壤的保护作用

Effect of the Management of Organic Matter on Soils Protection in Xingshan Tobacco-growing Areas in Hubei Province

通过土壤保护现状及土壤有机质现状的分析,结合兴山烟区土壤平衡施肥数据分析,表明土壤有机质是土壤肥力的重要指导性指标。在对不同有机质土壤取烟样结果表明,兴山烟区土壤有机质与烟叶烟碱含量呈显著正相关,与烟叶总糖、还原糖相关性不显著,与中下部叶的评吸得分呈明显负相关,与上部叶评吸得分相关性不明显。因此,在兴山烟区能够通过土壤有机质指标反映土壤肥力状况,搞好土壤有机质管理对烟田土壤保护和烟叶质量稳定有重要意义。

The status of soil protection and soil organic matter was analyzed on the database of equilibrium iertilization in Xingshan. The tobacco samples detection results from different organic matter content levels of soil showed that the organic matter contents of soil in Xingshan and nicotine contents in leaves had a significant positive correlation; the organic matter content of soil in Xingshan didn＇t correlate significantly with total sugar and reducing sugar in leaves; the organic matter content of soil in Xingshan and smoking score of middle and lower leaves had a significant negative correlation; the organic matter content of soil in Xingshan didn＇t correlate significantly with smoking score of upper leaves. The organic matter content of soil in Xingsban could indicate the soil fertility.