不同有机物料对土壤和烟叶主要质量指标的影响

通过大田试验，研究了施用不同有机物料对土壤碳氮含量和烟叶碳/氮及感官质量的影响。结果表明，施用腐熟麦秸秆、绿肥和绿肥配施菌肥能提高土壤微生物商和前期土壤中有机碳、全氮、微生物量碳、微生物量氮含量，土壤微生物量碳/微生物量氮平均值在5左右。烟叶质量分析表明，烟叶碳/氮在移栽后60 d前增长缓慢，之后进入快速增长期，烘烤后下降，烤后烟叶感官质量得到改善。相关分析结果表明，土壤碳氮含量与评吸总分呈显著或极显著正相关，烟叶碳/氮与评吸总分不存在线性相关关系，但与香气量、刺激性、余味和劲头呈负相关，与香气质、浓度呈正相关。综合分析，以绿肥配施微生物菌剂的处理效果最好。

Effect of Different Organic Materials on the Main Quality Indicators of Soil and Tobacco

Field experiment was carried out to study the effect of different organic materials on soil carbon and nitrogen and C/N, sensor quality of flue-cured tobacco. Results showed that rotten wheat straw, green manure and green manure with microbial agents could increase microbial quotient and antecedent soil organic carbon, total nitrogen, microbial biomass C, microbial biomass N, with microbial biomass C/N averaged at about 5. The analysis of tobacco quality showed that tobacco leaf C/N increased slowly before 60d after transplanting then entered the period of rapid growth. Leaf C/N decreased after flue-curing and the sensory quality of flue-cured tobacco was improved. Correlation analysis showed that soil carbon and nitrogen content had significant or extremely significant positive correlations with total score of sensory quality. Tobacco leaf C/N had no linear correlation with total score of sensory quality, but had negative correlations with the aroma, pungent, aftertaste and momentum, had positive correlations with quality and concentration of aroma. Green manure with microbial agents rendered the best effect.