| Effect of K+ concentration on absorption and accumulation of mineral nutrients during tobacco seedling stage |
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| DOI：10.7606/j.issn.1000-7601.2009.03.29 |
| Key Words: tobacco potassium(K) mineral nutrient content accumulation water-culture |
| Author Name | Affiliation | | JIE Xiaolei | Henan Agricultural University, Zhengzhou 450002, China；Zhengzhou College of Animal Husbandry Engineering, Zhengzhou 450011, China | | LIU Fang | Henan Agricultural University, Zhengzhou 450002, China | | HUA Dangling | Henan Agricultural University, Zhengzhou 450002, China | | LIU Shi liang | Henan Agricultural University, Zhengzhou 450002, China | | LEI Guanghai | Henan Agricultural University, Zhengzhou 450002, China |
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| Abstract: |
| The effect of K+ concentration on the absorption and accumulation of several mineral nutrients in tobacco was studied by waterculture method.The results showed that,with the increasing supply of K+ from 75 mg·L-1 to 900 mg·L-1,the tobacco biomass varied in a shape of parabola and got a peak value at 300 mg·L-1 of K+.The K+ and Zn content of tobacco was increased with K+ supplied in solution,and when K+ concentration was 900 mg·L-1,the K and Zn content in tobacco reached the maximum.And the Ca,Mg and Cu content was reduced with K+ supplied in solution.The N,P and Mn content varied in a shape of parabola and N and P content got a peak value at 300 mg·L-1 of K+,while Mn at 450 mg·L-1.With the increasing supply of K+ from 75 mg·L-1 to 900 mg·L-1,the accumulation of N,P,Ca,Mn and K in tobacco varied in a shape of parabola and N,P,Ca and Mn got a peak value at 300 mg·L-1 of K+,while K got the peak value at 450 mg·L-1.The accumulation of Mg and Cu was lowered steadily,while Zn was increased.The changes of the content and accumulation of the determined nutrients in tobacco leaves with the increasing of K+ were similar to those in the whole plant. |
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