不同种植密度下糜子农艺性状及灌浆期冠层温度分异现象研究  

Study on Agronomic Traits and Canopy Temperature in Filling Stage of Proso Millet under Different Densities

作　　者：张东旗[1,2] 高小丽[1] 梁鸡保 张盼盼[2] 杨璞[1] 高金锋[1] 王鹏科[1] 冯佰利[1] 

机构地区：[1]西北农林科技大学/旱区作物逆境生物学国家重点实验室,杨凌712100 [2]国家杂粮工程技术研究中心/黑龙江八一农垦大学 [3]陕西省神木县农技推广中心

出　　处：《黑龙江八一农垦大学学报》2015年第5期36-39,共4页journal of heilongjiang bayi agricultural university

基　　金：国家科技支撑计划(2014BAD07B03);国家自然科学基金(31371529);国家谷子糜子产业技术体系(CARS-07-12.5-A9)资助;国家杂粮工程技术研究中心组建项目(2011FU125X07)

摘　　要：密度是影响糜子分蘖和产量的重要因素之一。为了探索糜子高产个体和群体特性,以榆糜2号为材料,设置3种种植密度(M1:基本苗15万株·hm-2、M2:45万株·hm-2、M3:75万株·hm-2),研究了不同种植密度下糜子农艺性状、产量性状及冠层温度间的差异。试验结果表明,不同种植密度下,糜子灌浆期群体冠层温度表现出明显差异,同一生育时期总体表现为M1>M2>M3。不同种植密度下,糜子单株农艺性状和产量性状也存在较大差异,低密度(M1)下,糜子单株生长势较强,分蘖成穗率较高,单株穗重及单株粒重较大;随着密度的增加,分蘖成穗率降低,单株穗重及单株粒重较小,但高密度(M3)下群体产量较高。因此生产上应根据品种特性通过单位面积株数、穗数及粒重的协调发展实现作物的高产优质。Density is one of the important factors that affecting the yield and tillers of proso millet. In order to explore the high yield individual and population characters, Yumi 2 was used as the experimental material to analyze the differences between agronomic traits, yield characters and canopy temperature under the densities （M1 15 000 s·hm^-2, M2 45 000 s·hm^-2, M3 75 000 s·hm^-2）. The results showed that there were the significant differences of canopy temperature under different destinies in filling stage, and the canopy temperature showed M1 〉M2〉M3 at same growth period. The differences were observed about agronomic traits and yield characters of single plant under different densities. The single plant had the stronger growth vigor, higher percentage of available tiller, heavier single plant spike weight and grain weight per plant under M1. The percentage of available tiller, single plant spike weight and grain weight per plan was decreased with density increasing, but the yield was highest under M3. So the high yield and high quality should be based on the coordinated development of density, numbers of panicles and grain weight on practical production.

关 键 词：糜子 种植密度 冠层温度 农艺性状 产量性状 

分 类 号：S516[农业科学—作物学]