钾肥不同施用量对耐密型春玉米光合速率和产量的影响  

Effect of Potassium Application Rates on Photosynthetic Rate and Yield of Spring Maize

作　　者：崔金虎[1,2] 曹庆军[2] 高亚男[2] 张铭[2] 王洪预[2] 

机构地区：[1]东北农业大学,哈尔滨150000 [2]吉林大学植物科学学院,长春130062

出　　处：《玉米科学》2009年第6期93-96,共4页Journal of Maize Sciences

基　　金：国家"十一五"科技支撑计划(2006BAD02A10-2-2);吉林省科技发展计划项目(20060201-2)

摘　　要：采用田间钾肥定量试验的方法,研究了钾肥不同施用量对春玉米产量性状和产量的影响。研究结果表明:生育期内不同品种叶绿素含量和光合速率的变化趋势相同,均呈单峰变化规律。钾肥主要是通过影响玉米的百粒重、穗粒数和穗长来影响玉米的产量,不同品种间钾肥对产量性状的影响不同,对军单8产量性状影响大小依次为百粒重>穗粒数>穗长,对品种先玉335影响大小依次为穗粒数>穗长>百粒重。In this study, a quantitative field experiment of potassium was carried out to test the effects of potassium application on yield and grain yield traits of spring maize. The results indicated that in the growth period of maize, it showed the same trend of changes between photosynthetic rate and chlorophyll content at different maize growth stages, and single peak variation. The affect of potassium to maize yield mainly through the influence with 100-kernel weight, grain number and ear length, different effects with different types. In which, the effect on yield traits of Jundan 8 successively was 100-kernel weight 〉 grains per spike 〉 spike length, the effect on yield traits of Xianyu335 successively was grains per spike〉spike length 〉 100-kernel weight.

关 键 词：春玉米 钾肥 光合速率 产量性状 

分 类 号：S513.062[农业科学—作物学]