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| 移栽期和氮肥对烤烟产量、产值及氮素吸收利用的影响 | |
| 引用本文： | 谢志坚,涂书新,李进平,许汝冰,陈振国,曹仕明,王学龙,李建平,陈良存,曹翔练,郭利.移栽期和氮肥对烤烟产量、产值及氮素吸收利用的影响[J].核农学报,2009,23(3):513-520. |
| 作者姓名： | 谢志坚 涂书新 李进平 许汝冰 陈振国 曹仕明 王学龙 李建平 陈良存 曹翔练 郭利 |
| 作者单位： | 1. 华中农业大学资源与环境学院,湖北,武汉,430070 2. 湖北省烟草科研所,湖北,武汉,430030 3. 襄樊市烟草公司,湖北,襄樊,441003 |
| 基金项目： | 湖北省烟草专卖局重大攻关项目，农业部农业公益性行业科研专项基金 |
| 摘 要： | 采用大田15N同位素示踪试验，在湖北襄樊2个不同海拔的植烟生态区，研究了3个不同烟苗移栽期及施用氮肥对烤烟产量、产值和氮素吸收、利用及分配的影响。结果表明，低海拔和高海拔植烟生态区施用氮肥烤烟产量分别增加29%和19.2％，产值分别增加24.8%和25.7%。与5月5日移栽相比，推迟移栽期（5月15或25日）对低海拔地区烤烟产量产值影响不明显，但显著提高高海拔地区烤烟产量产值10%～30%。对烤烟总氮累积量的分析表明，推迟移栽期，低海拔地区植株吸氮量增加25%～45%，而高海拔地区植物吸氮量下降6%～20%。低海拔和高海拔试验点烤烟的地上部氮肥利用率分别约为30%和21%。推迟移栽期显著提高生育前期氮肥利用率，但在中后期无明显影响。与总氮积累趋势相反，推迟移栽期，烤烟各部位肥料氮占总氮的比例，低海拔地区下降10%～40%，而高海拔地区增加15%～50%。在高海拔地区，5月中下旬移栽烟苗有利于肥料氮素的吸收利用和增产增收作用。 |
| 关 键 词： | 烤烟 移栽期 氮肥 吸收 15N示踪 |
| 收稿时间： | 2008-10-26 |
Effects of Transplanting Time and Nitrogen Fertilizer on the Yield, Market Value and N Uptake of Flue-cured Tobacco by using 15N Tracing Technique |
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| XIE Zhi-jian,TU Shu-xin,LI Jin-ping,XU Ru-bing,CHEN Zhen-guo,CAO Shi-ming,WANG Xue-long,LI Jian-ping,CHEN Liang-cun,CAO Xiang-lian,GUO Li.Effects of Transplanting Time and Nitrogen Fertilizer on the Yield, Market Value and N Uptake of Flue-cured Tobacco by using 15N Tracing Technique[J].Acta Agriculturae Nucleatae Sinica,2009,23(3):513-520. | |
| Authors: | XIE Zhi-jian TU Shu-xin LI Jin-ping XU Ru-bing CHEN Zhen-guo CAO Shi-ming WANG Xue-long LI Jian-ping CHEN Liang-cun CAO Xiang-lian GUO Li |
| Institution: | 1.College of Resource and Environment;Huazhong Agricultural University;Wuhan;Hubei 430070;2.Tobacco Science Institute of Hubei Province;3.Xiangfan Tobacco company;Xiangfan;Hubei 441003 |
| Abstract: | A field experiment with~(15)N isotope tracing microplots was carried out to study the effects of transplanting time and N fertilizer on the yields,market values and N uptake and usage in different organs of flue-cured tobacco growing in two different ecological regions,lower and higher altitude sites,in Hubei province,China.The results showed that applying N fertilizer increased the yield by 29.0% and 19.2%,and the market values by 24.8% and 25.7% for the lower and higher altitude sites,respectively.Compare... |
| Keywords: | flue-cured tobacco transplanting time nitrogen fertilizer uptake 15N tracing |
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