污泥有机肥对烤烟农艺、经济性状的影响

为了利用城市污泥、改善土壤有机质含量、提高烟叶的产量和品质,通过大田试验研究了不同配比污泥有机肥与专用肥配合施用对烤烟主要农艺、经济性状的影响.试验结果表明,与单独施用无机复合肥相比,合理施用污泥有机肥可以显著或极显著缩短烤烟团棵期、现蕾期和始烤期,增加烤烟株高、叶片数、茎围、单叶重和叶面积,提高烤烟的产量、产值、均价、中上等烟比例及上等烟比例.其中污泥有机肥400g/株+无机复合肥15g/株的配合施用(T_4组),烤烟产量和产值最高,产量比对照每亩增产21.26kg,产值增加736.02元.检测结果表明,污泥有机肥营养成分和重金属含量均符合国家有机肥料标准,可作为一种理想的肥料应用于烤烟生产.

Effects of sludge organic fertilizer on agronomic and economic traits in flue-cured tobacco

In order to use city sludge, improve the content of soil organic carbon, enhance the yield and quality of flue-cured tobacco, the effects of sludge organic fertilizer on agronomic and economic traits in flue-cured tobacco were studied based on field trials.The results showed that, in comparison with compound fertilizer, sludge organic fertilizer could remarkably shorten the growing period, budding stage and start baking period, increase the plant height, leaf number, the diameter of stem, leaf weight and leaf area, and finally improve the yield, marketing value, average price, and the proportion of superior tobacco.Among all the treatments applied, treatment 4 (400 kg sludge organic fertilizer + 15 kg inorganic compound fertilizer) is the most effective treatment with highest yield and marketing value.The results of quality detection showed that the nutrition and heavy metals all accord with the standard of organic fertilizer by the country, indicating that the sludge organic fertilizer could be used as a good soil conditioner and farmland fertilizer.