多糖纳米脱氯剂对烤烟氯素吸收积累及产质量的影响

采用大田试验，研究了多糖纳米脱氯剂对烤烟氯素吸收积累及产质量的影响。结果表明，5‰脱氯剂处理促进了烟株生长发育、增加烟株的干物质积累量，但10‰脱氯剂处理反而抑制了烟株生长发育，不利于烟株干物质积累。施用脱氯剂均未降低根和茎中的氯含量和积累量，却显著降低了中部叶和下部叶氯含量及积累量。从烟株的氯分布来看，脱氯剂施用显著增加了根和茎中氯的分布，却降低了叶中氯的分布。各处理植烟土壤各土层氯含量均表现为不施脱氯剂 <5‰脱氯剂 <10‰脱氯剂处理，表明脱氯剂处理抑制了烟叶对氯的吸收，使大部分氯残留在土壤中。从烤烟的农艺性状、经济性状、评吸及吸氯效果等方面综合考虑，在烤烟生产上利用5‰多糖纳米脱氯剂的处理效果较佳。

Effects of Polysaccharide Nano-antichlor on Chlorine Absorption and Accumulation,Yield and Quality of Flue-cured Tobacco

A field experiment was conducted to study the effects of antichor on chlorine absorption and accumulation, yield and quality of flue-cured tobacco. The results indicated that the addition of 5‰ antichor could promote growth and development, and increase dry matter accumulation of tobacco. However, the addition of 10‰ antichor was not beneficial to tobacco growth and dry matter accumulation. Application of antichor did not reduce chlorine content and accumulation in root and stem, but significantly reduced the chlorine content and accumulation in the middle and lower tobacco leaves. The antichor addition significantly increased the distribution of chlorine in root and stem, but significantly reduced the distribution of chlorine in leaf. The soil chlorine content could be ranked as no anticho <5‰ antichor <10‰ antichor treatments. Applying antichor could inhibit tobacco leaf chlorine absorption, but might result in large amount of chlorine residual in the soil. Comprehensive studies showed that the antichor application should be kept at about 5‰ to maintain agronomic traits, economic characters, smoking quality and chlorine reduction of flue-cured tobacco.