施氮量与种植密度对石柱山地烤烟农艺性状与产质量的影响  

Effect of Nitrogen Application Rate and Planting Density on Agronomic Traits and Yield and Quality of Flue-cured Tobacco in Shizhu Mountain Area

作　　者：王智 WANG Zhi(Shizhu Branch Company,Chongqing Tobacco Company,Chongqing 409100)

机构地区：[1]重庆市烟草公司石柱分公司,重庆409100

出　　处：《安徽农业科学》2018年第35期23-25,90,共4页Journal of Anhui Agricultural Sciences

摘　　要：[目的]探明烤烟适宜的群体结构,提升烟叶质量和经济效益。[方法]在重庆市石柱县龙潭乡木坪村以云烟87为材料,采用施氮量、种植密度双因素随机区组设计方法。施氮量设计4个水平,种植密度设计4个水平,共计16个处理组合。对16个组合烤烟的生育期、农艺性状、病害发生情况、经济性状等进行了探讨分析。[结果]施氮水平对有效叶数、产值的影响较大,其中有效叶数随施氮量的增大而增加,产值在一定范围内呈正相关,在几个施肥水平中,N3处理表现均较佳。而种植密度水平对株高、有效叶数、叶长、叶宽、单叶平均叶面积、叶面积系数、产量、产值影响较大,且都表明适度的种植密度其表现最好,过高或过低的密度均会降低其表现,M2处理表现均较佳。[结论]综合来看,表现最好的为N3-M2(纯氮112.5 kg/hm^2,18 000株/hm^2)处理。[Objective]In order to identify the suitable population structure of flue-cured tobacco and to improve the quality and economic benefits of tobacco leaves.[Method]Using Yunyan 87 as the material,the double factor randomized block design method of nitrogen application rate and planting density was adopted in Muping Village,Longtan Township,Shizhu County,Chongqing City.The nitrogen application rate and planting density were designed to4levels with a total of 16 treatment combinations.The growth period,agronomic traits,disease occurrence and economic traits of 16 combinations of flue-cured tobacco were analyzed and discussed.[Result]The nitrogen application rate had a great influence on the effective leaf number and output value.The effective leaf number increased with the increase of nitrogen application rate,and the output value was positively correlated within a certain range.In several fertilization levels,N3 treatment performed better.The planting density level had a great influence on plant height,number of productive leaves,leaf length,leaf width,mean leaf area per leaf,leaf area index,yield and output value,and both showed that the moderate planting density was the best,too high or too low density will reduce its performance,and M2treatment performed better.[Conclusion]In summary,the best performance combination was N3-M2(pure nitrogen 112.5kg/hm2,18000 plants/hm2).

关 键 词：施氮量 种植密度 农艺性状 产质量 

分 类 号：S572[农业科学—烟草工业]