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氮素实时管理对夏玉米产量和氮素利用的影响
作物学报,农作物,期刊,一级学报,中国农业科学院
作物学报 ACTA AGRONOMICA SINICA 2011, 37(1): 152?157
ISSN 0496-3490; CODEN TSHPA9
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E-mail: ******@.cn
DOI: .
氮素实时管理对夏玉米产量和氮素利用的影响
叶优良1,2 黄玉芳1 刘春生2 曲日涛2 宋海燕2 崔振岭3
河南农业大学资源与环境学院/ 河南省高校资源与环境工程技术研究中心, 河南郑州450002; 2山东农业大学资源与环境学院, 山东泰安271018; 3中国农业大学资源与环境学院, 北京 100193
1
摘要: 为实现氮素效率和玉米产量的协同提高, 以山东省泰安市和兖州市为试验地点, 连续3年在4个田块上进行了基于土壤硝态氮测试的氮素实时管理, 结果表明, %~%, %; %~%, %。与农民习惯施肥相比, %~%, %~%, %~%, %~%, 产/%~%。说明应用土壤硝态氮测试进行氮肥实时管理可以明显减少玉米氮肥用量, 提高氮肥利用效率, 增加产量和经济效益。关键词: 玉米; 硝态氮; 产量; 氮肥利用率
Effect of In-Season Nitrogen Management Strategy on Maize Grain Yield and Nitrogen Use Efficiency
YE You-Liang1,2, HUANG Yu-Fang1, LIU Chun-Sheng2, / Ri-Tao2, SONG Hai-Yan2, and CUI Zhen-Ling3
1
College of Resources and Environment, Henan Agricultural University / Engineering Research Center of Agricultural Resources and Environment,
Colleges and Universities of Henan Province, Zhengzhou 450002, China; 2 College of Resources and Environment, Shandong Agricultural University, Tai’an 271018, China; 3 College of Resources and Environment, China Agricultural University, Beijing 100193, China
Abstract: In order to improve maize yield and nitrogen use efficiency cooperatively, in-season nitrogen management strategy based on soil nitrate nitrogen test was conducted for three years in four fields at Tai’an and Yanzhou city of Shandong province. The results showed pared with farmers traditional fertilization, maize grain yields of optimized nitrogen management were increased by %–%, averaged %, nitrogen rates were reduced b/ %–%, averaged %, nitrogen uptake efficiencies were increased by %–%, nitrogen