不同用量腐植酸有机肥对衡阳烤烟生长及产质量的影响

以烤烟品种云烟87为试验材料，设置CK（常规施肥，不施用腐植酸)、H1（常规施肥下增施腐植酸225kg/hm2)、H2（常规施肥下增施腐植酸450kg/hm2)、H3（常规施肥下增施腐植酸675kg/hm2)共4个处理，研究增施腐植酸有机肥对衡阳烤烟生长及产质量的影响。结果表明：与常规施肥相比，增施腐植酸有机肥对于衡阳烤烟的生长和产质量有明显的促进作用，叶片SPAD值明显增加，农艺性状和经济性状均有不同程度的提高，叶面积增加14.59%，产量提高12.5%，产值最多增加29.08%，均价提高3.83元/kg，中上等烟比例提升6.04个百分点，内在化学成分更加协调。

Effects of Different Amounts of Humic Acid on Growth, Yield and Quality of Hengyang Flue-cured Tobacco

Using flue-cured tobacco variety Yunyan 87 as experimental material, four treatments were set up: CK (conventional fertilization without humic acid), H1 (increased humic acid 225kg / hm2), H2 (increased humic acid 450kg / hm2) and H3 (increased humic acid 675kg / hm2). The effects of increased humic acid organic fertilizer on the growth, yield and quality of Hengyang flue-cured tobacco were studied. The results showed that compared with CK, the application of humic acid organic fertilizer could promote the growth, yield and quality of Hengyang flue-cured tobacco, the Leaf SPAD value increased significantly, the agronomic and economic characters were improved in varying degrees, the leaf area increased by 14.59%, the yield increased by 12.5%, the output value increased by 29.08%, the average price increased by 3.83 yuan / kg, and the proportion of medium and high-grade tobacco increased by 6.04%, The internal chemical composition is more coordinated.