| 油菜叶片衰老与NPK含量变化 |
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| 引用本文： | 冷锁虎,单玉华,李德权. 油菜叶片衰老与NPK含量变化[J]. 中国油料作物学报, 2001, 23(1): 38-40,45 |
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| 作者姓名： | 冷锁虎 单玉华 李德权 |
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| 作者单位： | 1. 南京农业大学，江苏 南京210095
2. 扬州大学，江苏 扬州225009 |
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| 基金项目： | 江苏省“九五”重点攻关项目(BE96327) |
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| 摘 要： | 定期测定油菜生长后期叶片N，P，K含量结果表明：（1）随着叶片衰老N，K含量下降较快，约有80％以上的N素和90％以上的K素在衰老过程中输向其它器官；（2）P素含量在叶片衰老过程中下降幅度较小，向外输送量约30％，（3）适量施用N肥能延缓叶片N，K养分输出。
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| 关 键 词： | 油菜 叶片衰老 氮 磷 钾 含量变化 高产栽培 |
| 文章编号： | 1007-9084(2001)01-0038-03 |
Changes of NPK contents in decrepit leaves of rapeseed |
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| LENG Suo hu ,SHAN Yu hua ,LI De quan. Changes of NPK contents in decrepit leaves of rapeseed[J]. Chinese Journal of Oil Crop Sciences, 2001, 23(1): 38-40,45 |
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| Authors: | LENG Suo hu SHAN Yu hua LI De quan |
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| Affiliation: | LENG Suo hu 1,SHAN Yu hua 2,LI De quan 2 |
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| Abstract: | The field trials were carried out on the farm of Agricultural College of Yangzhou University in 1999/2000. The NPK contents of decrepit leaves of rapeseed were measured. The results were as follows: (1) The contents of N and K decreased very quickly and more than 80% of N and 90% of K transported to other organs as the leaves decrepit. (2) The P content decreased slowly and about 30% of P transported to other organs as the leaves decrepit. (3) N application could delay the N and K output in decrepit leaves. |
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| Keywords: | Rapeseed Leaf Decrepit NPK |
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