华北农学报

所属专题: 玉米

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施氮和深松对春玉米根系性状的影响研究

张凤路1, 刘鑫1, 张怡明1, 李少昆2, 谢瑞芝2, 修文雯1, 牛兴奎2   

  1. 1. 河北省作物生长调控实验室河北农业大学农学院, 河北 保定 071001;
    2. 中国农业科学院作物所, 北京 100081
  • 收稿日期:2012-08-25 出版日期:2012-12-31
  • 作者简介:张凤路(1965 - ), 男, 河北临城人, 教授, 博士生导师, 主要从事作物栽培研究。
  • 基金资助:
    国家重大基础研究项目(2009CB118601);“十二五”国家粮食丰产科技工程河北省项目(2011BAD16B08);国家自然科学基金项目(31071362);河北省自然科学基金项目(C2008000257)

Studies on the Effects of Nitrogen Application and Soil Deep-loosing on Root Characteristics of Spring Maize

ZHANG Feng-lu1, LIU Xin1, ZHANG Yi-ming1, LI Shao-kun2, XIE Rui-zhi2, XIU Wen-wen1, NIU Xing-kui2   

  1. 1. Key Laboratory of Crop Growth Regulation of Hebei Province,College of Agronomy,Agricultural University of Hebei, Baoding 071001,China;
    2. Institute of Crop Sciences,Chinese Academy of Agriculture Sciences,Beijing 100081,China
  • Received:2012-08-25 Published:2012-12-31

摘要: 试验于2009-2010年在吉林省中国农科院公主岭试验站进行。以耐密玉米品种郑单958为材料,采用2种密度(52 500株/hm2(LD)和82 500株/hm2(HD)),2个施氮水平(150 kg/hm2(LF)和300 kg/hm2(HF))研究了传统耕作方式和深松(40 cm)对玉米生长发育和根系的分布情况。结果表明:玉米的生长发育与密度、施氮水平以及耕作方式均有密切关系。在不同密度和施肥水平下,深松处理比传统耕作在植株总干物量、根系和籽粒产量等方面均有有利作用。深松有利于打破犁底层,根系在0~40 cm的分布明显优化。本研究阐明了在传统耕作条件下适度深耕增加产量的生理基础,并对高产玉米栽培具有重要意义。

关键词: 玉米, 深松, 密度, 根系性状, 施氮量

Abstract: Experiment was conducted at Gongzhuling experimental station of Institute of Crop Sciences, ChineseAcademy of Agricultural Sciences, Jilin Province during 2009 - 2010. Density tolerant maize hybrid of Zhengdan958 ( ZD ) was used as experimental materials under 2 plant densities ( 52 500 plants /ha ( LD ) and 82 500plants /ha ( HD) ) , and 2 nitrogen application levels (150 kg /ha( LF) and 300 kg /ha( HF) ) conditions. Maizegrowth and development and root characteristics were studied under the treatment of deep-loosening conditions (40cm) with traditional soil tillage method as control. The result showed that the growth and development of maize planthave close relations with densities, nitrogen application levels and tillage methods. Plant total dry weight, root character and kernel yield under the treatment of deep-loosening conditions are better than those of traditional tillage under different density and nitrogen application level conditions. The plow-base soil layer is easily broken through bydeep-loosening, and the distribution of root in 0 - 40 cm soil layer is optimized apparently. This experiment elucidated the mechanism of yield increase by the suitable deep-loosening treatment under traditional soil tillage conditions, and it is also of great meaning for high-yielding maize production.

Key words: Maize, Deep-loosening, Density, Root characteristics, Nitrogen application levels

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引用本文

ZHANG Feng-lu, LIU Xin, ZHANG Yi-ming, LI Shao-kun, XIE Rui-zhi, XIU Wen-wen, NIU Xing-kui. Studies on the Effects of Nitrogen Application and Soil Deep-loosing on Root Characteristics of Spring Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.3969/j.issn.1000-7091.2012.z1.061.

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