影响紧凑型夏玉米产量的几个关键因素  

Some Factors Affecting Yield of Dense-type Summer Maize

作　　者：李芳贤[1] 徐光彬[1] 柴树桔 李兴明[1] 王德华[1] 张桂珍[1] 刘玉娥[2] 

机构地区：[1]山东省潍坊市农业科学院作物研究所,山东潍坊261041 [2]山东省潍坊职业学院,山东潍坊261041

出　　处：《杂粮作物》2003年第4期214-216,共3页Rain Fed Crops

摘　　要：影响紧凑型夏玉米产量的关键因素有 :地力不足 ,施肥单一 ;种植偏稀 ,群体密度达不到指标 ;只追施拔节、孕穗肥 ,不重视后期增施攻粒肥 ;This paper analysed some factors affecting the production of dense type summer maize. Such as deficient fertilization, single fertilizing, sparsely planting, mass density short to index, only fertilizing at shooting stage and ear pregnant stage, not attach importance to fertilize supporting small grain, early harvest affecting improve production, etc.. This paper also breifly discussed how to improve production.

关 键 词：夏玉米 紧凑型品种 群体密度 产量 

分 类 号：S513.04[农业科学—作物学]