| 利用32P示踪技术探讨不同施肥方法的烟株磷肥利用率 |
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| 引用本文： | 陈萍,李天福,冉邦定,张晓海.利用32P示踪技术探讨不同施肥方法的烟株磷肥利用率[J].云南农业大学学报,2003,18(1):69-71. |
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| 作者姓名： | 陈萍 李天福 冉邦定 张晓海 |
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| 作者单位： | 云南烟草研究院农业研究所栽培室，云南烟草研究院农业研究所栽培室，云南烟草研究院农业研究所栽培室，云南烟草研究院农业研究所栽培室 云南玉溪653100，云南玉溪653100，云南玉溪653100，云南玉溪653100 |
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| 基金项目： | 中国烟草总公司云南省公司资助项目(983A08)。 |
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| 摘 要： | 在烤烟大田期进行32P同位素示踪试验研究得到:烟株对磷素营养的吸收,随着生育进程的推进呈逐渐增加趋势,移栽后第1次取样（40 d）的吸收量较少,磷肥利用率也较低;移栽后100 d的吸收量较多,磷肥利用率也较高。3种不同施肥方法处理中,磷肥利用率、烟株干物质重量、烟株中吸收自肥料的磷素所占百分数以所有肥料条施处理较低,2/3基肥1/3追肥处理居中,1/3基肥2/3追肥较高。
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| 关 键 词： | 烤烟 32P 吸收 分配 利用率 |
| 文章编号： | 1004-390X(2003)01-0069-03 |
| 收稿时间： | 2002-7-12 |
Exploring the P Utilization Efficiency of Different Application Methods in Tobacco Plants by Using 32 P Tracing Technique |
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| CHEN Ping,LI Tian-fu,RAN Bang-ding,ZHANG Xiao-hai.Exploring the P Utilization Efficiency of Different Application Methods in Tobacco Plants by Using 32 P Tracing Technique[J].Journal of Yunnan Agricultural University,2003,18(1):69-71. |
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| Authors: | CHEN Ping LI Tian-fu RAN Bang-ding ZHANG Xiao-hai |
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| Institution: | (Institute of Tobacco Agricultural Research, Yunnan Academy of Tobacco Science, Yuxi 653100, China) |
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| Abstract: | The experiments were conducted during the flue-cured tobacco field growing period by using 32P tracing technique. The results showed that the P absorption of tobacco plant increased gradually with the progression of plant growth. The absorption amount and P utilization efficiency were very low at 40 days after transplanting, but pretty high at 100 days after transplanting. When the P utilization efficiency, plant dry weight and plant P percentage absorbed from the fertilizers were evaluated, three fertilizer application treatments arranged in a low to high order were row application of all fertilizer, 2／3 base fertilizer＋1／3 top dressing, and 1／3 base fertilizer＋2／3 top dressing. |
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| Keywords: | Flue-cured tobacco ~(32)P absorption distribution utilization efficiency |
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