郑单22玉米不同种植密度对产量的影响  

The Influence of Density on Yield of Zhengdan 22 Maize

作　　者：张明友 张新[2] 王振华[2] 张前进[2] 王金召 马巧云 

机构地区：[1]郑州市农科所,郑州450005 [2]河南农科院粮作所,郑州450002

出　　处：《中国农学通报》2005年第10期166-168,共3页Chinese Agricultural Science Bulletin

基　　金：国家粮食丰产工程项目"中产灌区夏玉米高效栽培技术集成与示范"(2004BA520A06-4)

摘　　要：通过不同种植密度对郑单22生长发育及产量影响的研究,郑单22单株叶面积和单株干物质积累量随密度增大而减小.群体叶面积系数和干物质积累量随密度增大而增加,达到一定种植密度后而下降,产量随密度加大而增加,结果表明,郑单22的适宜种植密度为45000～52500株/hm2.The influence of densities on growth and yield of Zhengdan22 was studied. Leaf area per plant and dry matter accumulation per plant were dropped by densities increasing. Leaf area index and dry matter accumulation were increased by densities increasing and dropped by high densities. The yield was increased with densities increasing. The results showed that the suitable planting density of Zhengdan22 is 45000-52500 olants/hm^2.

关 键 词：玉米 郑单22 密度 产量 种植密度 产量影响 干物质积累量 单株叶面积 玉米 生长发育 系数和 增大 

分 类 号：S513[农业科学—作物学] S565.1