| N·K营养与N·K平衡对烤烟野火病发生的影响 |
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| 引用本文： | 董艳,董坤,范茂攀,赵平,林克惠.N·K营养与N·K平衡对烤烟野火病发生的影响[J].安徽农业科学,2007,35(2):454-455. |
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| 作者姓名： | 董艳 董坤 范茂攀 赵平 林克惠 |
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| 作者单位： | 云南农业大学资源与环境学院,云南昆明,650201;云南农业大学资源与环境学院,云南昆明,650201;云南农业大学资源与环境学院,云南昆明,650201;云南农业大学资源与环境学院,云南昆明,650201;云南农业大学资源与环境学院,云南昆明,650201 |
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| 基金项目： | 云南省教育厅资助项目(03Y397B) |
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| 摘 要： | 研究了云南中部地区烤烟中部叶片旺长后期(移栽后70～75 d)N、K营养及N、K平衡对田间烤烟野火病发生的影响.结果表明:N含量高时(N＞4%),病害发生严重,但发病严重程度取决于K的含量,K素过高和过低都增加了烤烟的感病率;K含量过低(K＜2%),会降低烤烟的抗病性;烟叶N/K比失调,会影响烟株的生长发育,使烤烟对病害的抵抗能力降低.
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| 关 键 词： | 烤烟 N、K营养 N、K平衡 野火病 |
| 文章编号： | 0517-6611（2007）02-00454-02 |
| 修稿时间： | 10 16 2006 12:00AM |
Influence of N and K Concentration and N and K Balance on Wild Fire Disease of Tobacco Leaf |
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| DON Yan et al.Influence of N and K Concentration and N and K Balance on Wild Fire Disease of Tobacco Leaf[J].Journal of Anhui Agricultural Sciences,2007,35(2):454-455. |
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| Authors: | DON Yan |
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| Institution: | College of Resources and Environment, Yunnan Agriculture University, Kunming ,Yunnan 650201 |
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| Abstract: | The relationship among N and K concentration and N and K balance in middle leaf of tobacco plant and wild fire disease were investigated in the central Yunnan.The results showed that:(1) when N concentration > 4 %,the disease was serious,but its level was decided by the concentration of K,and too high or too low K concentration,the disease incidence and disease index of wild fire were increased;(2)the resistance of tobacco to wild fire disease was reduced when K concentration < 2 %;(3)if N/ K ration was not balance,over high or over low,normal growth of tobacco plant might be influenced and the resistance of tobacco to disease was reduced. |
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| Keywords: | Tobacco N and K nutrient Balance of N and K |
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