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玉米/大豆间作条件下作物根系对氮素的吸收利用

The Roots of the Crop Usually Absorb and Utilize Studying to Nitrogen under the Maize/Soybean Intercropping Condition

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【作者】 刘均霞陆引罡远红伟张振中催保伟

【Author】 LIU Jun-xia,LU Yin-gang,YUAN Hong-wei,ZHANG Zhen-zhong,CUI Bao-wei(College of Agronomy,Guizhou University,Guiyang 550025,China)

【机构】 贵州大学农学院贵州大学农学院 贵州贵阳550025贵州贵阳550025

【摘要】 通过田间栽培试验,研究玉米/大豆间作及相应单作不同时期作物地上部干质量、作物吸氮量、作物根际土壤脲酶活性、作物根际土壤细菌数量动态变化差异。结果表明:间作玉米吸氮量、根际脲酶活性、根际细菌数量、地上部干质量分别比单作玉米显著增加37.61%,33.54%,55.76%,27.92%。间作大豆根际脲酶活性、根际细菌数量分别比单作大豆显著增加41.3%,43.08%。间作大豆吸氮量、地上部干质量比单作大豆降低11.93%,11.19%,差异不显著。说明间作促进玉米生长。

【Abstract】 Through field cultivation experiments on corn/soybean intercropping and the corresponding single crops for different periods of shoot dry weight,crop N uptake,the rhizosphere of urease activity of the soil,crop rhizosphere soil bacteria dynamic difference.The results showed:intercropping maize nitrogen uptake,rhizosphere urease activity,rhizosphere bacteria,shoot dry weight,respectively than corn significantly increase 37.61%,33.54%,55.76%,27.92%.Intercropping soybean rhizosphere urease activity, rhizosphere bacteria volume than soybean significant increase 41.3% and 43.08%.Intercropping soybean nitrogen uptake,shoot dry weight of soybean than lower 11.93%,11.19%,the difference was not significant.Note intercropping maize for growth.

【关键词】 玉米大豆间作脲酶活性根际土壤
【Key words】 MaizeSoybeansIntercroppingUrease activityRhizosphere soil
【基金】 贵州省“十一五”科技攻关重大专项资助(黔科合NZ字(2005)3001)
  • 【文献出处】 华北农学报 ,Acta Agriculturae Boreali-Sinica , 编辑部邮箱 ,2008年01期
  • 【分类号】S513;S565.1
  • 【被引频次】61
  • 【下载频次】725
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