Effect of Combined Application of Nitrogen and Zn on Nitrogen and Zn Accumulation and Quality of Flue-cured Tobacco
YAO Qian
ZHANG Ke
MA Yiqiong
MU Tong
ZHANG Yijie
XU Zicheng
Abstract：In order to determine the reasonable ratio of nitrogen and Zn in flue-cured tobacco production,we set three nitrogen levels,namely 75.0 (high nitrogen),52.5 (medium nitrogen),and 30.0 (low nitrogen) kg/ha,and set two Zn levels,namely 16.330(high zinc),8.165 (low zinc)kg/ha.A total of 6 treatments were high nitrogen and high Zn (HH),high nitrogen and low Zn (HL),medium nitrogen and high Zn (MH),medium nitrogen and low Zn (MI.),low nitrogen and high Zn (LH),low nitrogen and low Zn (LL).The effects of combined application of nitrogen and Zn on the activity of soil enzyme,the content of nitrogen and Zn and quality of different parts of flue-cured tobacco were studied with the material of Yuyan 10.The results showed that at the mature stage of flue-cured tobacco,the activities of acid phosphatase,protease and catalase in rhizosphere soil of flue-cured tobacco of ML treatment were the highest,which were 71.43％,86.96％ and 9.38％ higher than the LH,LL,MH treatments.With the increase of nitrogen application amount,the total nitrogen content was increased in flue-cured tobacco,and under the same nitrogen condition,the distribution rate of total nitrogen in tobacco leaves was HH ＞ HL,MH ＞ ML,LH ＞ LL,and the distribution rate was the opposite in root,which indicated that the high Zn promoted the transfer of nitrogen to the leaf,whereas low Zn promoted the transfer of nitrogen to the root.With the increase of Zn application amount,the Zn content was increased in flue-cured tobacco.Under the condition of high Zn,the Zn distribution rate was LH ＞ MH ＞ HH,and under the condition of low Zn,the Zn distribution rate was ML ＞ LL ＞ HL.The results showed that low nitrogen and high Zn promoted the transfer of Zn to tobacco leaves,medium nitrogen and low Zn promoted the transfer of Zn to tobacco leaves.There were two treatments gave higher aroma substances content in tobacco,which were ML and LH treatments,increased by 31.56％ and 16.64％ compared with the HH treatment respectively.Generally speaking,the quality of flue-cured tobacco of ML and LH treatments was better.
Keywords：flue-cured tobaccocombined application of nitrogen and Znsoil enzymesnitrogen contentzinc contenttobacco quality
Publication Date：2017-08-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 38-45 )