| 中量元素镁对烤烟干物质和养分吸收积累的影响 |
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| 引用本文： | 季学军,王世济,沈思灯,马称心,赵第锟.中量元素镁对烤烟干物质和养分吸收积累的影响[J].安徽农业科学,2008,36(12):5031-5032. |
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| 作者姓名： | 季学军 王世济 沈思灯 马称心 赵第锟 |
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| 作者单位： | 1. 安徽皖南烟叶有限责任公司,安徽宣城,242000
2. 安徽省农业科学院烟草研究所,安徽合肥,230031 |
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| 基金项目： | 安徽皖南烟叶有限责任公司创新项目 |
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| 摘 要： | 目的]探讨镁对烤烟的干物质积累和养分吸收的影响,为烤烟合理施用镁提供理论依据。方法]在宣城、休宁两地,以60kg/hm2镁肥为处理,不施镁肥为对照,采集不同时期烟株的根、茎、叶样品,烘干过筛,灰化后用稀盐酸溶解,原子吸收分光光度法分析样品的镁及其他微量元素含量。结果]宣城、休宁两点各时期施镁处理的烤烟,干物质积累数量分别比对照高12%和10%,镁的积累量分别比对照高66%和89%,且叶片内镁含量也高于对照,微量元素的积累量均大于对照。结论]增施镁肥能促进烤烟干物质的积累,提高烟株镁的吸收和微量营养元素的积累,因而有利于提高烤烟的产量。
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| 关 键 词： | 镁 干物质积累 养分吸收 烤烟 |
| 文章编号： | 0517-6611(2008)12-05031-02 |
| 修稿时间： | 2008年3月7日 |
The Influence of Medium Element Mg on Dry Matter Accumulation and Nutrient Uptake of Flue-cured Tobacco's |
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| JI Xue-jun.The Influence of Medium Element Mg on Dry Matter Accumulation and Nutrient Uptake of Flue-cured Tobacco's[J].Journal of Anhui Agricultural Sciences,2008,36(12):5031-5032. |
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| Authors: | JI Xue-jun |
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| Abstract: | Objective] The objective of this study was to explore the influence of Mg on dry matter accumulation and nutrient uptake of flue-cured tobacco and provide a theoretical base for rational application of Mg in flue-cured tobacco.Method] Mg fertilizer at 60 kg/hm2 was applied as treatment in test sites of Xuancheng and Xiuning,with no Mg fertilizer as CK.The roots,stems and leaves of flue-cured tobacco in different growing stages were collected,dried and sifted out,and dissolved in dilute hydrochloric acid after incinerated.The content of Mg and other microelements in the samples were measured by atomic absorption spectrophotometry.Result] In the samples of flue-cured tobacco applied with Mg fertilizer in different growing stages in test sites of Xuancheng and Xiuning pots,the amount of dry matter accumulation was 12% and 10% higher than that in CK resp.,the content of Mg was 66% and 89% higher than that in CK resp.and the content of Mg in leaves was also higher than that in CK,the accumulation amounts of microelements were all higher than that in CK.Conclusion] Applying Mg fertilizer could improve the dry matter accumulation of flue-cured tobacco,increase Mg uptake in tobacco plant and the microelement accumulation,which was in favor of increasing the yield. |
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| Keywords: | Mg Dry matter accumulation Nutrient uptake Flue-cured tobacco |
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