Title

不同供鉀水平下烤煙體內鉀的循環、累積和分配

Translated Titles

Circulation, Accumulation and Distribution of Potassium in flue-cured Tobacco with Different Potassium Levels

Authors

鄭憲濱(Xian-Bin Zheng);曹一平(Yi-Ping Cao);張福鎖(Fu-Suo Zhang);朱尊權(Zun-Quan Zhu);李春儉(Chun-Jian Li);劉國順(Guo-Shun Liu);謝德平(De-Ping Xie)

Key Words

烤煙 ; 鉀 ; 循環 ; 累積 ; 分配 ; flue-cured tobacco ; potassium ; circulation ; accumulation ; distribution

PublicationName

植物營養與肥料學報

Volume or Term/Year and Month of Publication

6卷2期(2000 / 06 / 01)

Page #

166 - 172

Content Language

簡體中文

Chinese Abstract

在營養液培養條件下,利用Jeschke等人建立的模型,定量研究了不同供鉀水平下烤煙體內鉀的循環、累積和分配。結果表明,供鉀水平對烤煙乾物重影響不顯著;供鉀水平提高能顯著提高烤煙葉片以及根和莖的含鉀量,增加烤煙體內鉀素累積。不同供鉀水平下的烤煙,在打頂後10天內,體內都有大量鉀離子沿韌皮部由地上部回流到根中,回流到根中的鉀量占由根運輸到地上部的鉀量的比例大約在50%以上。供鉀水平低時,該比例明顯降低,供鉀水平提高,鉀循環量增加。不同供鉀水平下,烤煙體內鉀分配比例都是葉片最高,根和莖較低;打頂後10天內烤煙葉片中鉀分配減少,根中鉀分配增加。

English Abstract

The solution culture experiment was carried out to study the effect of potassium supply levels on circulation, accumulation and distribution of potassium in flue-cured tobacco. The results showed that there were large amounts of potassium flowing from shoot back to root in flue-cured tobacco. The flowing amount of potassium in phloem was more than about 50% of the amount in xylem. The potassium circling amount between root and shoot increased as potassium supply levels increased. The difference of dry weight of flue-cured tobacco among potassium supply levels was not significant. The potassium contents of leaf, stem and root of flue-cured tobacco increased significantly as the potassium supply levels increased. The leaf potassium content could be quite high if there were large amounts of potassium ion supplied. The highest K2O content of leaf in this experiment was 8.8%. The potassium distribution proportion in organs of flue-cured tobacco was highest in leaf, lower in stem and root under different potassium supply levels. After topping, potassium distribution proportion decreased in leaf and increased in root.

Topic Category 生物農學 > 植物學
生物農學 > 農業
生物農學 > 森林
生物農學 > 畜牧
生物農學 > 漁業