氮肥用量和密度对贵烟4号烟叶经济性状的影响  

Effects of Different Nitrogen Fertilizer Dosages and Planting Density on the Economical Characters of Tobacco Variety Guiyan 4

作　　者：陈风雷 谢永平 刘仁祥[2] 

机构地区：[1]贵阳市烟草分公司,贵州贵阳550001 [2]贵州大学农学院,贵阳550025

出　　处：《贵州农业科学》2005年第5期48-50,共3页Guizhou Agricultural Sciences

基　　金：贵州省"十五"科技攻关(1109号);贵阳市科技局资助项目(2003-006)

摘　　要：试验采用氮肥用量、密度二因素回归旋转组合设计,研究了氮肥用量和密度对贵烟4号烟株生长及经济性状的影响。结果:施氮量、密度变化对烟叶产量、均价、单位面积产值等经济性状的影响大,当施氮量、密度分别为6.5 kg和1 100株/667m2时,贵烟4号烟叶经济产量、均价、单位面积产值达到最高值162.01 kg/667m2、8.36元/kg1、353.64元/667m2。说明施氮量、密度分别为6.5 kg和1 100株/667m2是贵烟4号的最佳施氮量及密度组合。The field experiment of two factors （nitrogenous fertilizer norm and planting density） on tobacco variety Guiyan 4 was conducted according to rotational regression combination design. The results showed that the nitrogen applying amount and planting density obviously affected the yield, average price and output value per unit area of the tobacco variety. When the nitrogen applying amount and planting density are 6.5 kg and 1100 plants per 667m^2 , the cured leaf yield, average price and output value per unit area respectively reached the highest as 162.01 kg/667m^2 , 8.36 yuan/kg and 1353.64 yuan/667m^2. So the nitrogen applying amount and planting density mentioned above are the optimum combination for the cultivation of Guiyan 4.

关 键 词：氮肥用量 密度 贵烟4号 经济性状 

分 类 号：S572.062[农业科学—烟草工业]