施肥和种植密度对玉米品种东农252产量的影响  

Effects of Applying Nitrogenous Fertilizer and Growing Density on the Yield of Maize Dongnong 252

作　　者：李严[1] 金益[1] 董玲[1] 高明波[2] 刘红军[1] 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030 [2]哈尔滨市农业科学院玉米研究所,黑龙江哈尔滨150070

出　　处：《黑龙江农业科学》2009年第1期37-39,共3页Heilongjiang Agricultural Sciences

基　　金：黑龙江省科技资助项目(GB04B103-03)

摘　　要：本研究采用二次旋转回归组合设计,研究了5种密度和5个施氮水平对玉米品种东农252产量的影响。在氮肥和种植密度由低水平到高水平不断增加的过程中,东农252籽粒产量先增加后减少。本试验筛选出了最优组合方案为氮肥189 kg.hm-2,密度54900株.hm-2,最高籽粒产量为12352.68 kg.hm-2。The quadratic rotational regression combination design was used to study the effect of different nitrogen and density level on yield of the Dongnong 252. The main and interaetional effects of agronomic practices were analyzed. The best combinational schemes and high-yield cultivation models were proposed.

关 键 词：玉米 密度 氮肥 籽粒产量 栽培模式 

分 类 号：S513[农业科学—作物学]