Abstract
[Objective] To study agronomic traits,economic traits,appearance quality and chemical components of Nicotiana tabacum L.from different altitude in Xunyang Region,Shaanxi Province.[Method] K326 was selected from Zhaowan Town,Xunyang County,Shanaxi Province in 2011 to carry out demonstration experiment at altitude 1 043,893,767 and 540 m.The corresponding soil physical and chemical properties are pH 5.9,organic matter 19.559 g/kg,alkali-hydrolyzable nitrogen 117.0 mg/kg,available P 30.2 mg/kg,available K 177.0 mg/kg; pH 5.3,organic matter 18.845 g/kg,alkali-hydrolyzable nitrogen 111.0 mg/kg,available P 47.1 mg/kg,available K 228.0 mg/kg; pH 5.6,organic matter 19.559 g/kg,alkali-hydrolyzable nitrogen 104.0 mg/kg,available P 22.0 mg/kg,available K 118.0 mg/kg; pH 7.4,organic matter 13.402 g/kg,alkali-hydrolyzable nitrogen 124.0 mg/kg,available P 18.3 mg/kg,available K 110.0 mg/kg.[Result] At 540-1 043 m,with altitude increasing,the growth period delayed,plant height decreased,stem diameter increased,pitch shortened,disease rate first decrease then increase,TN and Total nicotine content decreased,total sugar,reducing sugar and K content first rising then decreasing,leaf oil abundant,structure loose evaluation better.At 767 m,economic traits,yield,value,price and middle and upper grade tobacco proportion were the best,the following order was 893 m,1 043 m,540 m.[Conclusion] The quality of planting flue-cured tobacco in Xunyang at 800 m is better,lower or higher altitude are not beneficial for its growth.关键词
烤烟/海拔/农艺性状/经济性状/外观质量/化学成分Key words
Flue-cured tobacco/ Altitude/ Agronomic traits/ Economic traits / Appearance quality / Chemical components分类
农业科技
