菜籽饼肥施用量对烤烟磷吸收的影响

Effect of Rapeseed Cake Fertilizer on Phosphorus Absorptionin Flue-cured Tobacco

研究不同菜籽饼肥施用比例对烤烟磷吸收的影响规律,以期为烤烟栽培中科学合理的施用菜籽饼肥提供科学依据。试验在田间条件下,设置对照(T1,不施任何肥料)、常规施肥(T2)、25%菜籽饼肥(T3)、50%菜籽饼肥(T4)4个处理。结果表明:旺长期至上部叶成熟期,T4根系磷吸收分别比T2提高了30.58%、23.58%、30.00%、34.32%,T2显著高于对照;T4茎磷吸收分别比T3提高了19.21%、12.79%、11.72%、14.23%,差异显著,T3中部叶和上部叶磷吸收量与T2之间无显著差异;下部叶磷吸收量T4分别比T2、T3提高了23.54%、12.19%,差异显著,T2显著高于对照;T4中部叶磷吸收量分别比T2、T3提高了20.29%、12.89%,差异显著;T4上部叶磷吸收分别比T2、T3提高了32.18%、13.96%,差异显著。综合分析认为,T4对促进烤烟各器官磷吸收效果最显著。

In order to study the different rapeseed cake fertilizer on phosphorus absorption in flue-cured tobacco,and then it want to provide theoretical basis for scientific and rational application of rapeseed cake fertilizer in flue-cured tobacco cultivation.The experiment was conducted under field conditions,4 treatment were set and it including control(T1),conventional fertilization(T2),25%rapeseed cake fertilizer(T3),50%rapeseed cake fertilizer(T4),plot test design and repeat 3 times.The results show that:from vigorous growth to upper leaf maturity,the root phosphorus uptake of T4 was higher than T2 by 30.58%,23.58%,30.00%,34.32%,T2 was significantly higher than control;the stem phosphorus uptake of T4 was higher than T3 by 19.21%,12.79%,11.72%,14.23%,and it was have significant difference,there was no significant difference in phosphorus uptake between middle and upper leaves of T3 and T2;the T4 lower leaves phosphorus uptake was higher than T2 and T3 by 23.54%,12.19%,and it was have significant difference,T2 was significantly higher than the control;the T4 middle leaves phosphorus uptake was higher than T2 and T3 by 20.29%,12.89%,and it was have significant difference;the T4 upper leaves phosphorus uptake was higher than T2 and T3 by 32.18%and 13.96%,and it was have significant difference.According to the comprehensive analysis,T4 had the most significant effect on promoting phosphorus uptake in all organs of flue-cured tobacco.