| 冬小麦后期补施氮钾增产效应分析 |
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| 引用本文： | 党建友,姬虎太,张定一,裴雪霞.冬小麦后期补施氮钾增产效应分析[J].山西农业科学,2000,28(1):40-42. |
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| 作者姓名： | 党建友 姬虎太 张定一 裴雪霞 |
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| 作者单位： | 山西省农业科学院小麦研究所,山西,临汾,041000 |
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| 基金项目： | 山西省科委科技攻关项目(991005). |
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| 摘 要： | 冬小麦后期补施氮和氮钾配合，可使冬小麦营养条件得到改善，抗逆性增强，穗数、穗粒数、千粒重提高，产量增加。研究结果表明，氮钾配施增产效果优于单施氮肥，氮钾配施平均增产３４－８ ％ ，单施氮平均增产１３ ．３ ％ 。另外，增产效果与氮肥施用时期有关，在拔节期一次施氮效果最好，氮钾配施增产４２ ．２ ％ ，单施氮增产２５ ．９ ％ 。
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| 关 键 词： | 冬小麦 后期生长 氮钾配施 增产效应 |
| 文章编号： | 1002-2481(2000)01-0040-03 |
| 修稿时间： | 1998年12月8日 |
The Effect of Applying N and K in Late Stage on the Yield of Winter Wheat |
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| DANG Jian-you,JI Hu-tai,ZHANG Ding-yi,PEI Xue-xia.The Effect of Applying N and K in Late Stage on the Yield of Winter Wheat[J].Journal of Shanxi Agricultural Sciences,2000,28(1):40-42. |
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| Authors: | DANG Jian-you JI Hu-tai ZHANG Ding-yi PEI Xue-xia |
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| Abstract: | Applying N and applying N and K together in late growing stage can improve nutritional state and stress resistance ability. It can also increase the quantity of ears, grains per ear, and the yield of winter wheat. Research results demonstrated that the yield of winter wheat can be increased more by the combined fertilization of N and K than that of N only. The former can averagely increase the yield by 34 8%, and the latter by 13.3%. Moreover, The effect of the yield is related much to the application stage of N fertilizer. To apply all the N fertilizer in jointing stage gave best results. The combined application of N and K can increase yield by 42.2%, and N only 25.9%. |
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| Keywords: | Winter wheat Late growing stage Combined fertilizaion of N and K The effect on the yield |
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