施氮量及基追比对烟株生长的影响

Effects of Nitrogen Application Rate and Base Topdressing Ratio on Growth and Quality of Tobacco

摘要: 为筛选出在黔西南州典型生态条件下，不同施氮量及基追比对主栽品种云烟87烟株生长的最佳组合。2020年在黔西南州安龙县钱相乡采用双因素试验，研究了不同施氮量及基追比对云烟87主要农艺性状、经济性状和干物质积累量的影响。结果表明：综合比较各处理，T8的农艺性状较好，产量、产值、均价、上等烟率均较好，干物质量积累较高，均优于其他处理。合理的基追比有利于烟株生长，在黔西南州烟区最佳组合是施氮量为10.28 kg/667 m²，基追比为6:4。

Abstract: In order to screen out the best combination of different nitrogen application rate and base top-dressing ratio of Yunyan 87 under typical ecological conditions in tobacco-growing areas of Southwest Guizhou, a two-factor experiment was conducted in Qianxiang township, Anlong county, Southwest Guizhou in 2020 to study the effects of different nitrogen application rates and base top-dressing ratio on the main agronomic, economic and chemical properties of Yunyan 87. The results show that: the T8 had better agronomic characters, better yield, output value, average price, superior tobacco rate and higher dry matter accumulation than other treatments. The reasonable ratio of base to topdressing was beneficial to the growth of tobacco plants, and the best combination was nitrogen application rate of 10.28 kg/667m² and ratio of base to topdressing of 6:4.