烤烟间套草木樨、甘薯对烟叶产量和品质的影响

Effects of Flue-cured Tobacco Intercropping with Sweet Clover or Sweet Potato on Yield and Quality of Tobacco Leaves

通过大田小区试验,研究了烤烟与甘薯套种、烤烟与黄花草木樨间作的农业生物多样性种植措施对烤烟烟叶产量和品质的影响。结果表明:烤烟间作草木樨和烤烟套种甘薯与烤烟单作相比,对烟叶产量没有显著影响。同时,烤烟间作草木樨较烤烟套种甘薯和烤烟单作,中等烟比例分别提高了8.10%和9.59%,达到显著差异。烤烟间作草木樨和烤烟套种甘薯较烤烟单作降低下等烟比例分别为12.61%和2.39%,达到显著水平。此外,间套作处理显著提高烤烟叶总糖、还原糖和糖碱比含量,降低氯含量,使其更接近优质烟标准。

The field experiment was conducted to study the effects of flue-cured tobacco and sweet potato(Ipomoea batatas ) intercropping, and flue-cured tobacco and sweet clover(Melilotus officinalis) intercropping on tobacco leaves yield and quality. The results showed that intercropping practice does not significantly influence the yield of tobacco leaves in comparison with monocropping. And compared with monocropping and intercropping of flue-cured tobacco and sweet potato, flue-cured tobacco and sweet clover intercropping increased the proportion of second grade leaves by 38.10% and 9.59% respectively, which are significant at P<0.05. And compared with monocropping, intercropping of flue-cured tobacco and sweet potato, and flue-cured tobacco and sweet clover decreased the proportion of low-grade leaves by 12.61% and 2.39% respectively, which are significant at P<0.05. Moreover, intercropping practice increased the contents of total sugar, reductive sugar and sugar/nicotine ratio, and decreased chlorine content in flue-cured tobacco leaves, making the leaves better in term of quality.