饼肥不同施用量对邵阳烟区烤烟综合性状的影响

Effects of different application rates of cake fertilizer on characteristics of flue-cured tobacco in Shaoyang tobacco-growing area

在湖南邵阳烟区进行饼肥不同施用量对比试验,探讨其对烤烟主要农艺性状、经济性状和外观质量的影响。结果表明,在现有试验条件下,饼肥不同施用量对烤烟的农艺性状影响不大,随着饼肥用量的增加,株高、叶片数、最大叶面积、茎围、节距等均呈现出先增、后减、再增的趋势,除了对上部最大叶宽的影响达到显著性水平外,对其他指标的影响均不显著,说明过多施用饼肥对烤烟生长发育没有明显的促进作用。综合烟叶产量、外观质量、主要化学成分、感观质量评定等指标,提出湖南邵阳烟区烤烟生产最适宜的饼肥施用量为450kg/ha。

In view to study the agronomic traits, economic characters and appearance quality of flue-cured tobacco （variety Yunyan 87）, different application rates of cake fertilizer （300, 450, 600 and 750 kg/ha） have been evaluated in a field experiment at Shaoyang, Hunan, China. The results showed that increasing application rate of fertilizer increased the plant height, leaf number, leaf area, stem diameter and node length followed by a decrease. No significant effects was found on the other indexes except for the upper leaf width. It was concluded that excessive application of cake fertilizer could not improve the growth and development of flue-cured tobacco plants. However, based on the evaluation of yield of tobacco leaf, appearance quality, main chemical components and sensory quality, the suitable application rate of cake fertilizer on flue-cured tobacco in Shaoyang was found to be 450 kg/ha.