Studies on Nitrogen Absorption, Distribution and Utilization in Flue-cured Tobacco under Higher and Lower Fertility Conditions
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摘要: 在费县褐土烟田,运用15N示踪技术研究了高低土壤肥力条件下烤烟对不同来源氮素的吸收、分配及利用。结果表明,在高低土壤肥力条件下,烤烟吸收的土壤氮量多于吸收的肥料氮量,烤烟吸收的氮素18.67%~29.32%来自于肥料,70.68%~81.33%来自于土壤。随生育进程,肥料氮占总氮的比例呈降低趋势,土壤氮比例呈增加趋势。在生育前期,低肥力土壤烟株吸收的肥料氮和土壤氮量高于高肥力土壤;在生育中后期,趋势相反。烤烟成熟过程中,茎的氮素积累量和分配比例增加,叶片的氮素积累量和分配比例降低,高肥力条件下茎的氮素分配比例增加幅度和叶片的氮素分配比例降低幅度均高于低肥力的。低肥力土壤烟株的氮肥利用率为8.81%~11.20%,高肥力土壤烟株的氮肥利用率为3.00%~16.76%。Abstract: Nitrogen uptake of different parts of flue-cured tobacco under different fertility condition by using 15N tracer technique was studied. Results showed that flue-cured tobacco took up more N from soil than from N fertilizer, and 18.67%-29.32% of N absorbed by flue-cured tobacco was derived from N fertilizer, 70.68%-81.33% from soil under two level fertility fields. Compared with the higher fertility field, the amount of fertilizer N and soil N absorbed by flue-cured tobacco was higher at the earlier stage. But there were the reverse trends at the midterm and late stage. During the maturity, the nitrogen accumulation amounts and distribution proportion of stem increased and the nitrogen accumulation amounts and distribution proportion of leaves decreased. The distribution proportion increasing extent of stem and decreasing extent of leaves were higher in higher soil fertility than in lower soil fertility. The nitrogen utilization efficiency (NUE) under lower fertility field was from 8.81% to 11.20%, and the NUE under higher fertility field was from 3.00% to 16.76%.
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Keywords:
- fertilizer N /
- soil N /
- absorption /
- distribution /
- utilization /
- tobacco
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[1] 中国农业科学院烟草研究所. 中国烟草栽培学[M]. 上海:上海科学技术出版社,2005:309-320. [2] 张延春,陈治峰,龙怀玉,等. 不同氮素形态及比例对烤烟长势、产量及部分品质因素的影响[J]. 植物营养与肥料学报,2005,11(6):787-792. [3] 化党领,黄向东,刘世亮,等. 氮素形态和数量对烤烟干物质积累及钾含量和积累量的影响[J]. 河南农业科学,2005(5):49-52. [4] 杨宏敏,陆引罡,魏成照,等. 应用15N示踪研究烤烟对氮的吸收及分布[J]. 贵州农业科学,1991(6):29-33. [5] 韩锦峰,郭培国,黄元熙,等. 应用15N示踪法探讨烟草对氮素利用的研究[J]. 河南农业大学学报,1992,26(3):224-227. [6] 郭培国,陈建军,郑燕玲. 应用15N示踪法研究烤烟的氮素营养[J]. 中国烟草学报,1998,4(2):64-68. [7] 苏帆,付利波,陈华,等. 应用15N研究烤烟对饼肥氮素的吸收利用规律[J]. 中国生态农业学报,2008,16(2):335-339. [8] 巨晓棠,晁逢春,李春俭,等. 土壤后期供氮对烤烟产量和烟碱含量的影响[J]. 中国烟草学报,2003,9(增刊):48-53. [9] Li W Q, Chen S H, Zhang R J, et al. Effects of different nitrogen sources on accumulation and distribution of total nitrogen and nicotine in flue-cured tobacco in Southeast of China[A]. Li C J, Zhnag F S, Dobermann A, et al (eds). Plant nutrition for food security, human health and environmental protection[C]//Beijing: Proceedings of the XV International Plant Nutrition Colloquium held in Beijing PR China, Tsinghua University Press, 2005, 420-421. [10] 侯雪坤,程岩,陈魁娜. 应用同位素15N、32P示踪对烤烟氮、磷营养规律的研究[J]. 黑龙江八一农垦大学学报,1994,7(4):9-15. [11] 陈萍,李天福,张晓海,等. 利用15N示踪技术探讨烟株氮素肥料的吸收与分配[J]. 云南农业大学学报,2003,18(1):1-4. [12] 魏成熙,钱晓刚,杨宏敏,等. 烟草对氮吸收利用的研究[J]. 耕作与栽培,1995(3):37-41. [13] 单德鑫,杨书海,李淑芹,等. 15N示踪研究烤烟对氮的吸收及分配[J]. 中国土壤肥料,2007(2):43-45. [14] 陈子元,温贤芳,胡国辉. 核技术及其在农业科学中的应用[M]. 北京:科学技术出版社,1983:466-484. [15] 钱晓刚,杨宏敏,王伟,等. 烟草对不同来源氮素的吸收、利用、分配的研究[J]. 中国烟草科学,1990(4):15-21. [16] 王艳,米国华,陈范骏,等. 玉米氮素吸收的基因型差异及其与根系形态的相关性[J]. 生态学报,2003,23(2):297-302. [17] 凌寿军,谢玉华,曾晓娥. 4种土壤的养分供给特性及烟株对肥料的利用率研究[J]. 中国烟草科学,2003,24(3):11-13. [18] 贾兴华,王元英,佟道儒,等. 烤烟新品种中烟100(CF965)的选育及其应用评价[J]. 中国烟草学报,2006,14(2):20-28. [19] 张杨,裴军,王方峰,等. 不同施肥水平对中烟100产质量的影响[J]. 中国烟草科学,2007,28(6):33-35,38.
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