不同移栽期对烤烟生长、氮、钾含量及经济性状的影响

Effect of Different Transplanting Stage on Growth, Nitrogen and Potassium Content and Economic Traits of Flue-cured Tobacco

采用田间小区试验,通过研究不同移栽期对烤烟生长发育、成熟期氮、钾含量及经济性状的影响,探明‘秦烟96’在陇县的适宜移栽期。结果表明,随移栽期延后,烤烟主要生育期均向后推迟,大田生育期逐渐缩短。随烤烟移栽期向后推迟,烤烟农艺性状、氮钾含量、产量、产值及上等烟比例均先升高后降低。综合分析,5月6日处理效果最好,经济性状优势明显。因此‘秦烟96’在陇县的适宜移栽期为5月6日。说明适宜的移栽期可为烤烟配制合适的气候条件,进而改善成熟期烟叶氮、钾营养,有利于干物质累积,从而提高烤烟产质量。

A field experiment was conducted to study the effect of different transplanting days on main growth and development, contents of nitrogen and potassium in tobacco leaves at maturity stage, economic traits of flue-cured tobacco in order to elucidate the best transplanting period of flue-cured tobacco cuhivar ＇Qinyan96＇ in Longxian. The results showed that with postponement of transplanting date of flue-cured tobacco, all main growth dates were put off; field growth period after transplant became shorter. Agronomic traits, the contents of nitrogen and potassium, yield, output value and proportion of superior tobacco of flue-cured was ascend in first and descend under postponement of transplanting period. Based on comprehensive analysis, the effect of May 6 treatment was best, and its economic trait was better than that from other treatments. Hence May 6 was the best appropriate transplanting date of ＇Qinyan96＇ in Longxian. All the results indicated that appropriate transplanting period provide suitable climatic conditions for flue-cured tobacco, then improve nitrogen, potassium nutrition of tobacco leaves at maturity stage and increase dry matter accumulation resulting in better yield and quality of flue-cured tobacco leaves.