| 小麦/大豆间作氮磷肥效的双变量分析 |
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| 引用本文： | 孙建好,李隆,李娟.小麦/大豆间作氮磷肥效的双变量分析[J].干旱地区农业研究,2007,25(4):183-186. |
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| 作者姓名： | 孙建好 李隆 李娟 |
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| 作者单位： | 甘肃省农业科学院土肥所,甘肃,兰州,730070;中国农业大学资源与环境学院,教育部植物与土壤相互作用重点实验室,北京,100094;中国农业大学资源与环境学院,教育部植物与土壤相互作用重点实验室,北京,100094;甘肃省农业科学院土肥所,甘肃,兰州,730070 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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国家自然科学基金 |
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| 摘 要： | 采用双变量分析法,分析小麦/大豆间作氮磷肥效.结果表明:①小麦/大豆间作种植施用磷肥对大豆的增产作用超过小麦,施用氮肥能明显提高间作系统中小麦产量,但大豆产量降低.②小麦/大豆间作的产量互补效应表现为:小麦产量提高,大豆产量相应下降;大豆产量提高,小麦产量变化不大.③在小麦/大豆间作中,施磷提高小麦千粒重,增加大豆粒数;施氮增加小麦穗粒数,降低小麦与大豆的千粒重.氮磷配施,磷肥能缓冲施氮引起的小麦与大豆千粒重的降低.
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| 关 键 词： | 双变量分析法 小麦/大豆间作 互补效应 产量构成 |
| 文章编号： | 1000-7601（2007）04-0183-04 |
| 修稿时间： | 2006-09-18 |
Double variables analysis of nitrogen and phosphorus fertilizer effects in wheat/soybean intercropping system |
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| SUN Jian-hao,LI Long,LI Juan.Double variables analysis of nitrogen and phosphorus fertilizer effects in wheat/soybean intercropping system[J].Agricultural Research in the Arid Areas,2007,25(4):183-186. |
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| Authors: | SUN Jian-hao LI Long LI Juan |
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| Institution: | 1. Institute of Soil and Fertilizers, Gansu Academy of Agricultural Sciences, Lanzhou 730070 2. Key Laboratory of Plant and Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, China |
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| Abstract: | Double variables analysis was used to analyze nitrogen and phosphorus fertilizer effect in wheat/soybean intercropping system.Results showed that soybean yield was increased more than wheat when phosphorus fertilizer was applied while wheat yield was increased significantly and soybean yield was decreased when nitrogen fertilizer was used.Complementary effects of wheat/soybean intercropping system indicated that: when wheat yield was increased,soybean yield decreased;but when soybean yield increased,wheat yield changed little.Effect of applying nitrogen fertilizer and phosphorus fertilizer was different.Phosphorus application can enhance wheat 1000 grain weight and soybean grain number while nitrogen application can increase wheat grain number and decrease 1000 grain weight of wheat and soybean.Nitrogen and phosphorus applied together can buffer the drop of 1000 grain weight of wheat and soybean resulted from nitrogen application. |
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| Keywords: | double variables analysis wheat/soybean intercropping complementary effects yield component |
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