摘要
测定三门峡烟区159份烤烟样品总氮含量和238份土壤样品氮含量，分析两者的分布特点及相互关系。结果表明：三门峡烟区烤烟总氮含量适宜，平均为1．46％±0．35％，变幅为0．85％～2．53％，43．39％的烟叶样品总氯含量落在1．50％～3．00％之间；不同等级烟叶总氮含量变化规律是B2F〉C3F〉X2F。三门峡烟区土壤全氮含量较高，平均值为0．76±0．15g／k，变幅办0．37～1．58g/kg，有6．38％的土壤样品全氮含量高于1．00g/kg；土壤碱解氮含量适宜，平均值为66．41±16．70mg／k，变幅为34．90～132．74mg／kg，有3．36％的土壤样品碱解氮含量高于110mg／kg，不同县市土壤碱解氮含量变化规律是灵宝〉陕县〉卢氏〉渑池。烤烟总氮含量与土壤碱解氮含量呈显著正相关，在相关分析的基础上，建立了土壤碱解氮和烤烟总氮含量的线性回归方程。烤烟总氮含量随着土壤碱解氮含量的增加而增加。
The nitrogen contents in 159 flue - cured tobacco leaf samples and 238 soil samples in Sanmenxia tobacco districts were determined, and their distribution and relationship were analyzed. The results indicated that the nitrogen content in flue -cured tobacco leaf was suitable in total, which ranged from 0.85% to 2.53% with the mean of 1.46%±0.35%, and the nitrogen content in 43.39% of tobacco leaf samples was located in the range of 1.50% -3.00% ; the order of the nitrogen content in different grades of flue -cured tobacco leaf was B2F 〉 C3F 〉 X2F. Total nitrogen content in the soil was high, which ranged from 0. 37 g/kg to 1.58 g/kg with the mean of （0.76 ± 0.15 ） g/kg, and the total nitrogen content in 6.38% of soil samples was more than 1.00 g/kg. Alkali - hydrolyzable nitrogen content was suitable, which ranged from 34.90 mg/kg to 132.74 mg/kg with the mean of （66.41±16.70） mg,/kg, and 3.36% of soil samples had high alkali -hydrolyzable nitrogen content （ ≥ 110 mg/kg）. The order of alkali -hydrolyzable nitrogen content in the soil of different counties was Lingbao 〉 Shanxian 〉 Lushi 〉 Mianchi. The nitrogen content in flue - cured tobacco leaf had significant positive correlation at 0.05 level with alkali - hydrolyzable nitrogen content in soil, and the multiple regressive equations were built between the alkali - hydrolyzable nitrogen content in soil and the nitrogen content in flue - cured tobacco leaf. The nitrogen content in flue - cured tobacco leaf increased along with the increase of soil alkali - hydrolyzable nitrogen content.
出处
《江西农业学报》
CAS
2009年第8期64-67,共4页
Acta Agriculturae Jiangxi
基金
河南省烟草专卖局科技攻关项目(HYKJ200718)
三门峡烟草专卖局科技攻关项目(SMX200801)
关键词
三门峡烟区
烤烟
总氮
土壤
碱解氮
关系分析
Sanmenxia tobacco district
Flue- cured tobacco leaf
Nitrogen content
Relationship analysis
Soil
