作　　者： ; ;

机构地区： 河南科技大学农学院

出　　处： 《玉米科学》 2003年第3期90-93,97,共5页

摘　　要： 中国农业大学和德国霍恩海姆大学(HohenheimUniversityofGermany)中德合作项目“华北平原作物高产高生产力条件下环境可承受的持续农业研究”2000～2001年度北京试验基地研究结果的一部分。试验结果表明,优化施肥和秸秆还田优化施肥夏玉米株高、基部节间直径、同一时期叶面积指数、干物质积累量、穗部基本性状,如穗长、穗粗、秃尖长、产量结构及产量与传统施肥无显著性差异,而氮肥利用率显著提高。在优化施肥条件下,夏玉米棒三叶总叶面积略微减少,生育后期穗位叶叶绿素含量下降稍快,吐丝至收获干物质积累量略有下降。秸秆还田有利于改善夏玉米的生育状况和提高产量。 China Agricultural University and Hohenheim University of Germany have engaged in the Sino-Ger-many co-operative project,the environmentally acceptable and sustainable agricultural production with high produc-tivity level in the North China Plain since1999.The paper reported a part of results of research on summer maize in the Beijing experimental base of the project in2000～2001.The results followed:The difference in plant height,base internode diameter,LAI and DMW at the same measuring dates,basic characteristics such as mean size and bare tip length of cobs,yield and its components of summer maize between the optimized fertilization,optimized fer-tilization with crop residues and traditional fertilization was insignificant.The optimized fertilization and optimized fertilization with crop residues showed remarkably greater nitrogen use efficiency.The optimized fertilization made the three leaves around corn cob rather smaller,the cob leaf chlorophyll content decreasing at greater rate at the later stage and dry matter accumulation amount slightly reduced from flowering to grain filling.The optimized fertilization with crop residues improved the conditions of growth and development and yield of summer maize.

关 键 词： 施肥 夏玉米 生长发育 产量 影响因素 株高 节间生长 节间顺序 收获

领　　域： [农业科学]