油菜还田对烟株生长和烟叶品质的影响

Effects of Rape Returning on Flue-cured Tobacco Growth and Quality

为研究油菜还田对烤烟种植的影响,研究了油菜自然凋落物、秸秆、残茬对烟株生育期、经济性状、烟叶物理性状和常规化学成分的影响。结果表明:(1)自然凋落物可以延长生育期1d,提高烟叶还原糖和钾含量,烟叶化学成分可用性指数在Ⅰ级(好)、Ⅱ级(较好)的比例分别提高2.95%、3.03%,Ⅲ级(中等)的比例降低7.01%。(2)油菜秸秆可以延长生育期4d,提高烟叶总糖和钾含量,烟叶化学成分可用性指数在Ⅰ级(好)、Ⅱ级(较好)的比例分别提高2.02%、0.98%,Ⅲ级(中等)、Ⅳ级(稍差)的比例分别降低1.99%、1.01%。(3)油菜残茬可以提高烟叶淀粉含量,烟叶化学成分可用性指数在Ⅰ级(好)、Ⅱ级(较好)的比例分别降低6.96%、7%,Ⅲ级(中等)、Ⅳ级(稍差)的比例分别增加6.99%、6.97%。

In order to study the effects of rape returning on flue-cured tobacco planting. In this experiment, The effects of rape natural litter, rape straw and rapeseed residues on the growth period, economic character, physical behavior, content of conventional chemical component of flue-curred tobacco were studied. The main findings are as follows ： （1）Rape natural litter can extend the growth period for 1 day, improve the reducing sugar and potassium content, the ratio of tobacco leaf chemical components availability index at levels Ⅰ and Ⅱ increased by 2.95% and 3.03% respectively, at levels Ⅲ reduced by 7.01%. （2）Rape straw can extend the growth period for 4 day, improve the total sugar and potassium content, the ratio of tobacco leaf chemical components availability index at levels Ⅰ and Ⅱ increased by 2.02% and 0.98% respectively, at levels Ⅲ and Ⅳ reduced by 1.99% and 1.01% respectively. （3）Rapeseed residues can improve the starch content, the ratio of tobacco leaf chemical components availability index at levels Ⅰ and Ⅱ reduced by 6.96% and 7.00% respectively, at levels Ⅲ and Ⅳ increased by 6.99% and 6.97% respectively.