| 施肥对苜蓿+无芒雀麦混播草地氮、磷、钾含量的效应 |
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| 引用本文： | 张丽娟,张永亮,赵海新,胡自治.施肥对苜蓿+无芒雀麦混播草地氮、磷、钾含量的效应[J].草原与草坪,2007(1):14-18,23. |
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| 作者姓名： | 张丽娟 张永亮 赵海新 胡自治 |
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| 作者单位： | 1. 内蒙古民族大学,农学院,内蒙古,通辽,028042
2. 甘肃农业大学,草业学院,甘肃,兰州,730070 |
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| 摘 要： | 探讨了科尔沁沙地草原2号杂花苜蓿+Carlton无芒雀麦混播草地基肥和追肥中N,P和K元素营养配比对混播草地头茬草N,P和K含量的效应。3年的试验结果表明:施K肥能提高无芒雀麦的含K量和苜蓿的含N量。高P或高K处理均使无芒雀麦的含N量下降。施N肥能提高无芒雀麦的含N量,而对苜蓿含N量影响不明显。高N处理(基肥30 g/m2,追肥45 g/m2尿素)降低了无芒雀麦和苜蓿的含K量,同时也降低了苜蓿的含P量。N,P和K营养配比为N 9.0-13.5 g/m2、P2O57.2-12.0 g/m2、K2O 12.0-18.0 g/m2时牧草N,P和K含量较高。随着草地使用年限增长,无芒雀麦的N素含量下降,苜蓿的K素含量增加。
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| 关 键 词： | 施肥 苜蓿 无芒雀麦 混播草地 营养元素 |
| 文章编号： | 1009-5500(2007)01-0014-06 |
| 修稿时间： | 2006年2月7日 |
Effects of fertilization application on the content of N, P, K in individual specie of Lucerne/Smooth bromegrass mixed grassland |
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| ZHANG Li-juan,ZHANG Yong-liang,ZHAO Hai-xin,HU Zi-zhi.Effects of fertilization application on the content of N, P, K in individual specie of Lucerne/Smooth bromegrass mixed grassland[J].Grassland and Turf,2007(1):14-18,23. |
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| Authors: | ZHANG Li-juan ZHANG Yong-liang ZHAO Hai-xin HU Zi-zhi |
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| Abstract: | Effects of N,P and K fertilizers on content of N,P,K in individual species of Lucerne/ Smooth bromegrass mixed grassland under different application rates were studied.The results show that the proper fertilization(9.0～13.5 g/m2 N,7.2～12.0 g/m2 P2O5,12.0～18.0 g/m2K2O) could increase the Content of N,P,K in Bromus inermis and Medicago varia cv.Caoyuan NO.2;N application could increase Bromus inermis′nitrogen content,but it had no significant influence on Medicago's nitrogen content;K application could increase Bromus inermis' potassium content and Medicago's nitrogen content,but it had no significant influence on Medicago's nitrogen content;P application decreased Bromus inermis' nitrogen content,but it had no significant influence on Bromus inermis and Medicago's phosphorus content.P and K application could increase Medicago's nitrogen content;High level K(27 g/ m2 K2O) and P(18.0 g/m2P2O5) fertilization could reduced the N Content of Bromus inermis.And high level N fertilization(20.3g/m2 N)could reduced potassium content of Bromus inermis and Medicago varia cv.Caoyuan NO.2. |
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| Keywords: | fertilization Lucerne Smooth bromegrass mixture grassland nutrient element |
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