连年施用新型肥料对土壤真菌群落及烤烟产质量的影响

为了提高土壤质量,提升烤烟质量,采用大田试验研究了不同新型肥料对土壤真菌群落及烤烟产质量的影响。结果表明,新型肥料的施加能降低土壤真菌群落的多样性和均一性（新型肥料C组除外）,降低球囊菌的相对丰度;新型肥料与常规生产的肥料相比,能提高产量、产值与上等烟叶比例,减少生产用工,提高烟叶的钾含量,能改善中上部烟叶的香气质,改进中上部烟叶的柔和细腻度与余味,提高中上部烟叶的评吸质量。4个新型肥料处理间相比,以新型肥料D较好,其真菌群落组成与对照组的差异最大,产量与产值均

Effects of Consecutive Applying Different New Type Fertilizers on Soil Fungal Communities and Tobacco Quality and Yield

In order to improve the quality of soil and tobacco, a field experiment was conducted to study the effects of applying different new type fertilizers on soil fungal communities and yield and quality of flue-cured tobacco leaves. The results indicated that application of new type fertilizer decreased the diversity and evenness of soil fungal communities, the relative abundance of glomeromycota, proportion of high-grade leaves, yield and output value, content of potassium of leaves and smoking quality. The fragrance quality and delicate- finish of mid upper leaves were increased in the four new type fertilizer treatments compared with tradition production treatment. The contents of total nitrogen and nicotine in leaves were decreased in new type fertilizer D treatment, the sensory quality and yield and output value were the best, and soil fungal communities composition had a maximum difference compared with control group. So the new type fertilizer D treatment was the optimum combination in tobacco-growing region of Xiangxi.