[1]孙文相,张明聪,刘元英,等.启动氮加追氮对不同密度大豆氮素吸收的影响[J].大豆科学,2013,32(04):506-511.[doi:10.11861/j.issn.1000-9841.2013.04.0506]
　SUN Wen-xiang,ZHANG Ming-cong,LIU Yuan-ying,et al.Effects of Starter-N plus Top-dressing N on Nitrogen Absorption of Soybean Plants under Different Densities[J].Soybean Science,2013,32(04):506-511.[doi:10.11861/j.issn.1000-9841.2013.04.0506]
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启动氮加追氮对不同密度大豆氮素吸收的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第32卷 期数: 2013年04期 页码: 506-511 栏目: 出版日期: 2013-08-25
Title:
Effects of Starter-N plus Top-dressing N on Nitrogen Absorption of Soybean Plants under Different Densities
作者:
?孙文相; 张明聪; 刘元英; 吴 琼; 赵 晶
?东北农业大学 资源与环境学院，黑龙江 哈尔滨 150030
Author(s):
?SUN Wen-xiang; ZHANG Ming-cong; LIU Yuan-ying; WU Qiong; ZHAO Jing
?College of Resources and Environmental Science,Northeast Agricultural University,Harbin 150030,China
关键词:
大豆; 密度; 启动氮加追氮; 氮素积累; 产量
Keywords:
Soybean; Density; Starter-N plus top-dressing N; N accumulation; Yield
分类号:
S565.1
DOI:
10.11861/j.issn.1000-9841.2013.04.0506
文献标志码:
A
摘要:
?以大豆品种东农52为试材，采用裂区设计，设置3个密度和3种施氮方式，研究了启动氮加追氮对不同密度大豆氮素吸收的影响。结果表明：相同密度下，启动氮加追氮处理与氮作基肥一次施用相比，R5期后氮积累量和氮同化贡献率显著增加，其中25万株·hm-2密度下启动氮加R4追氮处理的氮积累量增加109.5%（P<0.01）。相同施肥条件下，R5期前氮积累量随密度增加而增加，而R5期后启动氮加R4追氮处理25万株·hm-2密度下的氮素积累量较20和30万株·hm-2分别增加27.4%和16.0%（P<0.05）。R5期后氮积累量和氮同化贡献率与产量呈极显著正相关。25万株·hm-2密度下启动氮加R4追氮处理获得了最高产量，与其它各处理相比提高了9.1%~25.6%（P<0.05）。
Abstract:
?A split-plots designed field experiment with three densities and three N treatments using soybeancv.Dongnong 52 was conducted to study the effects of starter-N plus top-dressing N on N absorption of soybean under different densities.Results showed that N accumulation and contribution rate of N assimilation after R5 of starter-N plus top-dressing N treatment increased significantly compared to those of using N only as basal fertilizer under same density.N accumulation after R5 of starter-N plus top-dressing N at R4 was 109.5% higher than using N only as basal fertilizer(P<0.01)under the density of 250 000 plants·ha-1.When N was equally applied among treatments,N accumulation before R5 increased with higher density,but N accumulation after R5 of starter-N plus top-dressing N at R4 under the density of 250 000 plants·ha-1 was 27.4% and16.0% higher(P<0.05)than 200 000 and 300 000 plants·ha-1,respectively.The highest yield was achieved by starter-N plus top-dressing N at R4,yield of which was 9.1%-25.6% higher than other treatments(P<0.05).

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备注/Memo

?基金项目：黑龙江省优势农产品生产与加工研发平台产业优化项目（GJPT0062）；哈尔滨市科技攻关计划（2008AA6CN040）。

更新日期/Last Update: 2014-02-20