植烟土壤碱解氮、速效钾含量及其交互作用对烤烟钾含量的影响  

Effect of Available Nitrogen and Available Potassium Concentration,and Their Interaction on the Potassium Content in Flue-cured Tobacco Leaves

作　　者：王亚虹[1] 卢秀萍[2] 许自成[1] 解燕[3] 高森[1] 王林[1] 陈征[1] 穆童[1] 

机构地区：[1]河南农业大学烟草学院,郑州450002 [2]云南省烟草农业科学研究院,云南玉溪653100 [3]云南省烟草公司曲靖市公司,云南曲靖655000

出　　处：《中国农业科技导报》2017年第11期108-116,共9页Journal of Agricultural Science and Technology

基　　金：中国烟草总公司清香型重大专项(Ts-03-20110020);中国烟草总公司云南省公司科技攻关重点项目(2011YN03)资助

摘　　要：以曲靖罗平烟区为基础,分析了土壤碱解氮、速效钾及其交互作用对烤烟钾含量的影响,结果表明:(1)罗平烟区土壤碱解氮含量较高,有56.13%的土壤样品碱解氮含量处于高水平(>150 mg/kg);土壤速效钾含量丰富,但变异系数(49.22%)较大;烟叶钾含量较适宜,有77.61%的烟叶样本达到巴西优质烤烟钾含量标准。(2)随着土壤碱解氮含量的增加,烟叶钾含量先升高,随后又降低;烟叶钾含量(y)与土壤速效钾含量(x)呈显著正相关(P<0.05),回归方程y=0.000 4 x+1.885达到显著水平。(3)方差分析结果显示:氮钾交互作用对烟叶钾含量的影响达到极显著水平(P<0.01)。当土壤基础肥力处于低氮、中氮水平时,烟叶钾含量与土壤钾水平呈正相关;当土壤基础肥力处于高氮水平时,二者表现为负相关。在9种土壤氮钾互作组合水平中,以中氮高钾(N2K3)组合的烤烟钾含量最高。Taking Luopin tobacco-growing area in Qujing city as basis,this paper analyzed the effect of soil available nitrogen,available potassium and their interaction on the potassium content in flue-cured tobacco leaves. The results indicated that：（1） the soil available nitrogen content in Luopin tobacco-growing area was higher,and 56.13% of the soil sample were at a high level（ 150 mg/kg）. Soil available potassium content was rich,but the coefficient of variation was larger（ 49. 22%）. The potassium content in flue-cured tobacco leaves was appropriate,and about77.61% tobacco samples reached the potassium levels of Brazil high quality flue-cured tobacco.（2） Along with the increasing of soil available nitrogen content,the potassium content in flue-cured tobacco leaves increased first and then decreased. The potassium content（ y） in flue-cured tobacco leaves was positively correlated（ P0.05） with soil available potassium content（ x）. And the regression equation,y = 0.000 4 x＋1.885,reaching a significant difference.（3） The variance analysis results showed that the effect of interaction between N and K on the potassium content in flue-cured tobacco leaves reached extreme significant difference at P0.01 level. When the soil basic fertility was atlow nitrogen and medium nitrogen level,the potassium content in flue-cured tobacco leaves was positively correlated with soil potassium level. When the soil basic fertility was at high nitrogen level,the correlation were negative. Among9 soil nitrogen and potassium interaction groups,medium nitrogen and high potassium（ N2 K3） group could produce flue-cured tobacco leaves with the highest potassium content.

关 键 词：烤烟 罗平烟区 碱解氮 速效钾 钾含量 

分 类 号：S572[农业科学—烟草工业]