施肥对湘南烟区玉米茬烤烟烟叶产量与品质的影响

目的]研究湘南烟区玉米与烟草轮作制度下不同施肥处理对烤烟产量与品质的影响,探寻合适的栽培措施。方法]调查不同施肥处理烟苗的长势,对产量和产值进行比较分析。结果]增施钾、磷、锌肥处理中上等烟比例、产量、产值最高;增施钾、磷肥处理次之。结论]N∶P2O5∶K2O=1∶2∶2,增施硫酸锌的处理,养分供应协调,烟株前期生长旺盛,中上等烟比例增加,产量、产值较高,为最适合湘南烟区的施肥方案。

Effect of Fertilization on Yield and Quality of Flue-cured Tobacco in Corn Land of Southern Hunan

To seek the optimal cultivation measures of tobacco in maize- tobacco rotation system in southern Hunan, the effect of different fertilization treatments on yield and quality of flue - cured tobacco was investigated by observation on growth vigor of tobacco seedlings under different fertilization treatments and comparative analysis on yield and output value. The results showed that the proportion of superior and medium tobacco leaves, yield and quality in treatment of adding po- tassium, phosphorus and zinc fertilizer was highest, and the treatment of adding potassium and phosphate fertilizer fol-lowed. Treatment of N： P2 O5：K2O = 1： 2：2 and adding zinc sulfate could improve the proportion of superior and medium tobacco leaves and gain the highest yield and output value, which was the most suitable fertilization mode for tobacco area in southern Hunan.