有机物料对烤烟农艺性状、产量及叶绿素降解的影响

以烤烟品种G80为材料,在土壤中添加6种不同有机物料,研究其对烤烟农艺性状、产量及叶绿素含量的影响。结果表明:(1)添加有机物料对烤烟生长农艺性状影响较小;(2)常规施肥基础上增加有机物料施用不利于烟叶成熟落黄,同一氮素水平下增加有机物料比例可降低成熟期叶绿素含量,减缓成熟前期叶绿素降解速率,加快后期降解速率;(3)增施有机物料可提高烟叶经济效益;(4)基肥减施9 g/株,同时添加生物碳(100 g/株)和饼肥(20 g/株)处理表现最好,成熟期叶绿素含量最低,6月23日前降解速率最慢(18.59%),6月23日之后降解速度最快(14.17%和28.08%),产量、产值、上等烟比例和均价分别比对照高11.10%、38.20%、143.29%和19.53%,说明该处理有利于烟株成熟落黄及经济效益提升。

Effects of Organic Materials on Agronomic Traits,Yield and Chlorophyll Content in Flue- Cured Tobacco

Taking flue-cured tobacco variety G80 as material, adding six kinds of organic materials, the effects of organic materials on agronomic traits, yield and chlorophyll content in G80 were studied. The results showed: (1) Increasing application of organic materials had on significant influence on agronomic traits of flue-cured tobacco; (2) Increasing application of organic materials on basis of conventional fertilization go against tobacco leaf maturing and burning up. Under the same N-level, Increasing application of organic materials decreased the chlorophyll content, slowdown the chlorophyll decomposition rates in premature stage, while accelerate in the later process of mature;(3) Less base fertilizer 9 g, and increasing application of bio-carbon 100 g and cake 20g per strain behaved the best, the chlorophyll content was the least, the chlorophyll decomposition rates was most slowly in premature stage (18.59%), and fastest in later process of mature (14.17% and 28.08%), the yield, output value, proportion of first, class tobacco leaf and average price was 11.10%, 38.20%, 143.29%and 19.53% higher than CK, respectively, which was beneficial on maturing and burning up and increasing economic efficiency.