新疆春玉米源库性状的群体调节作用  

Auto_regulate on Characteristics of Source and Sink under Different Planting Density of Xinjiang Spring Maize

作　　者：李绍长[1] 魏国庆 李承 吴新波 赵彦江 

机构地区：[1]石河子大学新疆作物高产研究中心,新疆石河子市832003 [2]伊犁农四师61团

出　　处：《玉米科学》2001年第4期62-64,共3页Journal of Maize Sciences

摘　　要：本试验研究了玉米在不同密度下单株及群体的源库性状的调节能力。结果表明 ,玉米源性状的调节能力较弱 ,且随生育进程的发展和群体压力的逐渐增加 ,叶面积的调节能力逐渐增强。种植密度对主要群体中后期的光合面积、光合时间等因素的影响 ,从而影响群体的光合速率和干物质积累。种植密度增加对库性状的影响主要是削弱了库器官的建成 (结实粒数 )和充实 (粒重 )The auto_regulation of indivedual and colony's characteristics of source and sink of spring maize(Sc704)under different planting density were studied in two diferent ecological regions (Shihezi and Yili).The result showed that the auto-regulation capability of source characteristics were weaker in comparing with that of sink characteristics.Auto-regulation of leaf area(LAR)increased gradually along with the phylogeny and the pressure that colony imposing on individual plant's growth.The increase of planting density mainly reduced the capacity of kernel setting and grain filling,caused grain number and grain weight losing.

关 键 词：春玉米 密度 源库 调节 玉米 

分 类 号：S513[农业科学—作物学]