摘要
为了探讨碱性烟田土壤改良的有效技术并提高烟叶质量,以烤烟品种‘中烟100’为材料,采用田间试验研究了不同硫磺用量(0.1、0.2、0.3kg/m2、0.1kg/m2+3.0kg/m2酒糟)对碱性土壤pH、烤烟生长及其产量质量的影响。结果显示:(1)碱性土壤施用0.1～0.3kg/m2的硫磺能够显著降低烤烟根区土壤的pH值,降低幅度达到0.3个单位以上。(2)硫磺能促进烟苗根系的早发快长,在烤烟移栽30d时,处理植株根、茎、叶的干重分别比相应对照增加16%～37%、9%～28%和17%～25%;与对照相比,中等用量硫磺(0.2kg/m2)和低用量硫磺配合酒糟(0.1kg/m2+3.0kg/m2)能够显著增加烟叶的产量和上中等烟比例。(3)硫磺能够显著增加中部烟叶氮含量,协调还原糖与烟碱的比值,0.1～0.2kg/m2硫磺能够显著增加烟叶氮和烟碱含量,且0.1kg/m2硫磺配合3.0kg/m2酒糟施用的效果更显著,但0.3kg/m2的硫磺处理效果较弱。研究表明,施用适量硫磺可显著降低碱性土壤的pH值,促进烟株的生长发育,提高烟叶的产量和质量,且硫磺0.2kg/m2和硫磺0.1kg/m2配合酒糟3.0kg/m2是碱性烟区土壤改良、提高烟叶产质量的较有效技术措施。
A field experiment was carried out to study the effects of sulfur fertilization on the soil pH, the growth,yield and quality of flue-cured tobacco （Zhongyan 100）. Four sulfur rates （0.1,0.2,0.3,and 0.1 with 3.0 kg/m2 stillage） were used in this experiment. The results showed that： （1）The pH of root zone soil was significantly reduced by application of 0. 1 to 0.3 kg/m2 sulfur, comparing with the control. The minimal reduction of pH was more than 0. 3 units. （2）Thirty days after transplanting, compare with the control,the dry weight of root,stem and leaf increased 16%～37%,9～28% and 17%～25%,respective- ly. Sulfur promoted the early growth of tobacco seedling root,and finally increased the dry matter accumu- lation of the plant. The yield and the ratio of superior and middle class of tobacco leaves were significantly increased at the sulfur application of 0.2 kg/m2 and 0.1 kg/mz with 3.0 kg/m2 stillage,comparing with the control. （3）Sulfur increased total nitrogen of cured leaves,whereait reduced the educing sugars/nicotineratio. The sulfur application of 0.1～0.2 kg/m2 significantly increased total nitrogen and nicotine of cured leaves,and 0.1 kg/m2 sulfur with 3.0 kg/m2 stillage could had more remarkable effect. However,the appli- cation of 0.3 kg/m2 sulfur did not work well. The results suggested that sulfur could significantly reducethe pH of root zone soil,improve the growth,yield and quality of flue-cured tobacco. The application of sul- fur at a rate of 0. 2 kg/m2 and 0.1 kg/m2 with 3.0 kg/mz stillage were the effective way to ameliorate soil acidity and increase theyield and quality characteristics of flue-cured tobacco in alkaline soil.
出处
《西北植物学报》
CAS
CSCD
北大核心
2012年第12期2479-2485,共7页
Acta Botanica Boreali-Occidentalia Sinica
基金
安徽省特色优质烟叶开发重大专项(20110551011)资助
关键词
硫磺
烤烟
pH
碱性土壤
烟叶品质
sulfur
flue-cured tobacco
pH
alkaline soil
tobacco leaf quality
