Effects of Different Plant Growth Regulators and Nutriments on the Agronomic Traits and Quality in Flue-cured Tobacco
The experiments were conducted to study the effects of different plant growth regulators NAA, GA, IAA and some nutriments on tobacco agronomic traits and chemical components. The results indicated that the growths of tobacco were promoted by NAA,GA,IAA obviously. The length,width and leaf area of the last leaf increased by 15. 24% ,34. 23% and 57. 98% respectively , and the length,width and leaf area of the leaf latter rised by 9. 74% ,17. 31% and 29. 85% respectively. The plant height increased by 19. 07% compared with CK and the yield went up remarkably. Reducing sugar was improved slightly, nicotine content was reduced remarkably and polyphenolic content was affected slightly. NAA + GA + IAA + Mo and NAA + GA + IAA + ABA are the best treatment, the effect of reducing nicotine and nicotine are obvious. Margin of two sugar are 3.50% and 3. 97% ,the ratios of carbohydrate to alkali are 7. 80 and 7. 96, and the tobacco chemical components are harmonized.
flue-cured tobaccogrowth regulatorsMo and Vcagronomic traitschemical components