Effects of Nitrogen Fertilizer on Yield, Nitrogen Absorption and Utilization on Four Summer Maize Species  

施氮对不同品种夏玉米产量及氮素吸收利用的影响(英文)

作　　者：张国合 王宜伦[1] 刘举[1] 许冬莲 郭冰 谭金芳[1] 

机构地区：[1]河南农业大学资源与环境学院/河南粮食作物协同创新中心,河南郑州450002 [2]河南省鹤壁市农业科学院,河南鹤壁456284

出　　处：《Agricultural Science & Technology》2014年第7期1152-1155,共4页农业科学与技术（英文版）

基　　金：Supported by China-International Plant Nutrition Institute Cooperation Project(BFDPHenanAU-2011);Special Funds for the Construction of Modern Agricultural Technology System(NYCYTX-02)~~

摘　　要：[Objective] The aim was to explore scientific application of N fertilizer for summer maize species.[Method] A test was designed to research effects of N quantities on Zhengdan No.958,Xundan No.20,Nonghua No.101 and Xianyu No.335 in terms of yield,economic benefits,accumulated nitrogen and use efficiency of N fertilizer.[Result] The increase of N fertilizer improved yields of summer maize dramatically.Specifically,with low N quantity,yield and net revenue of Zhengdan No.958 reached 18.19% and 3 158 yuan/hm^2,respectively,and yields and net revenues of Jundan No.20,Nonghua No.101 and Xianyu No.335 were 17.31% and 2 642 yuan/hm^2,25.03% and 3 726 yuan/hm^2,17.41% and 3 182 yuan/hm^2,accordingly.With N quantity increased,agricultural efficiency of Zhengdan No.958 reduced significantly and the agricultural efficiencies showed little differences among Xundan No.20,Nonghua No.101 and Xianyu No.335.[Conclusion] In practice,Zhengdan No.958 is suitable to be applied with N at low quantity,and Xundan No.20,Nonghua No.101 and Xianyu No.335 are suitable to be applied with N at high quantity.为实现因不同夏玉米品种科学施用氮肥,采用田间试验研究了不同施氮量对郑单958、浚单20、农华101和先玉335产量、经济效益、氮素积累及氮肥效率的影响。结果表明,4个夏玉米品种施氮增产显著,郑单958在低氮时产量和纯收益较好,增产18.19%,增收3 158元/hm2;浚单20、农华101和先玉335在高氮时产量和纯收益较好,分别增产17.31%、25.03%和17.41%,增收2642、3726和3182元/hm2。施氮量增加,郑单958氮肥农学效率显著降低,浚单20、农华101和先玉335氮肥农学效率无显著差异。生产中郑单958适宜低氮肥用量,而浚单20、农华101和先玉335适当增加氮肥用量可获得较好收益。

关 键 词：Summer maize Nitrogen fertilizer SPECIES YIELD Nitrogen efficiency 

分 类 号：S513[农业科学—作物学]