华北农学报2012，Vol.27Issue(z1)：309-314,6.
施氮和深松对春玉米根系性状的影响研究
Studies on the Effects of Nitrogen Application and Soil Deep-loosing on Root Characteristics of Spring Maize
摘要
Abstract
Experiment was conducted at Gongzhuling experimental station of Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Jilin Province during 2009 -2010. Density tolerant maize hybrid of Zhengdan 958 ( ZD) was used as experimental materials under 2 plant densities (52 500 plants/ha ( LD) and 82 500 plants/ha (HD)) ,and 2 nitrogen application levels (150 kg/ha (LF) and 300 kg/ha(HF)) conditions. Maize growth and development and root characteristics were studied under the treatment of deep-loosening conditions (40 cm ) with traditional soil tillage method as control. The result showed that the growth and development of maize plant have 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 by deep-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.关键词
玉米/深松/密度/根系性状/施氮量Key words
Maize/ Deep-loosening/ Density/ Root characteristics/ Nitrogen application levels分类
农业科技引用本文复制引用
张凤路,刘鑫,张怡明,李少昆,谢瑞芝,修文雯,牛兴奎..施氮和深松对春玉米根系性状的影响研究[J].华北农学报,2012,27(z1):309-314,6.基金项目
国家重大基础研究项目(2009CB118601) （2009CB118601）
"十二五"国家粮食丰产科技工程河北省项目(2011BAD16B08) （2011BAD16B08）
国家自然科学基金项目(31071362) （31071362）
河北省自然科学基金项目(C2008000257) （C2008000257）
