摘要
以紧凑型和平展型玉米不同株型的玉米品种为主要研究对象 ,利用作物生长分析法 ,系统研究了不同株型玉米品种群体内光分布、物质生产诸因素 (LAI、NAR和CGR)和群体库源特征等群体生理指标与品种耐密性的关系 ,结果表明 ,群体内光分布合理与否是衡量品种耐密性的重要指标 ,叶面积系数(LAI)、净同化率 (NAR)和作物生长率 (CGR)的动态发展规律是反映耐密性的本质特征 ,群体库源关系协调与否是鉴定品种耐密性的一个综合指标 .
Taken maize in two plant types of compact-type and flat-type as research object,the relationships between density-tolerance and light distribution in population,indices of productivity(LAI,NAR,and CGR),and population sink-source were studied synthetically by means of crop growth analysis method.The results showed that light distribution in population was the chief index to measure density-tolerance of different maize varieties.The kinetic rules of LAI,NAR,and CGR were the basic feature reflecting density-tolerance.The correspondent relationship in population sink-source was a comprehensive index to appraise density-tolerance of different maize varieties
出处
《应用生态学报》
CAS
CSCD
2002年第1期55-59,共5页
Chinese Journal of Applied Ecology
基金
陕西省科委科技攻关项目 ( 96K0 1 G1)
关键词
玉米
株型
耐密性
透光率
群体库源特征
生理指标
Maize, Plant type, Density-tolerance, Light pervious percentage, Population sink-source.
