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密度对玉米光合生理特性和产量的影响
引用本文:段巍巍, 李慧玲, 肖凯, 李雁鸣.密度对玉米光合生理特性和产量的影响[J].玉米科学,2007,15(2):098-101.
作者姓名:段巍巍  李慧玲  肖凯  李雁鸣
作者单位:河北农业大学农学院,河北,保定,071001
基金项目:国家粮食丰产科技工程项目
摘    要:以廊玉6号和农大108为试验材料,研究密度对玉米光合生理特性和产量的影响。结果表明:叶片光合速率、叶绿素含量、可溶性蛋白质含量、单株叶面积和单株干物重随着密度增加均降低;叶面积指数(LAI)、群体干物重(PDW)、光合势(LAD)和作物生长率(CGR)随密度增加而增大。生育前期差别不明显,中后期效应显著。无论单株性状还是群体性状,廊玉6号对密度的反应均比农大108迟钝,廊玉6号的耐密性强于农大108。本试验条件下,廊玉6号和农大108的适宜密度分别为67500株/hm2和60000株/hm2。

关 键 词:玉米  密度  生理特性  产量
文章编号:1005-0906(2007)02-0098-04
收稿时间:2006-08-20
修稿时间:2006-08-202007-01-24

Effects of Density on Photosynthetic Physiological Characteristics and Yield of Maize
DUAN Wei-wei,LI Hui-ling,XIAO Kai,LI Yan-ming.Effects of Density on Photosynthetic Physiological Characteristics and Yield of Maize[J].Journal of Maize Sciences,2007,15(2):098-101.
Authors:DUAN Wei-wei  LI Hui-ling  XIAO Kai  LI Yan-ming
Institution:College of Agronomy, Agricultural University of Hebei, Baoding 071001, China
Abstract:The study was carried on effects of density on photosynthetic physiological characteristics and yield of maize with Langyu No.6 and Nongda 108. The results showed that Pn, chlorophyll content , soluble protein content, leaf area and dry weight per plant dropped by density increasing, leaf area index, population dry weight, leaf area duration and crop growth rate increased with increasing density. The effect was more significant in post-stage than that in earlier-stage. The response to density of Langyu No.6 was more slowly than that of Nongda 108, both single plant and population characteristics, which showed that Langyu No.6 density-resistant was more tolerance than Nongda 108. The suitable planting density of Langyu No.6 and Nongda 108 were 67 500 plants/ha and 60 000 plants/ha respectively under this experiment condition.
Keywords:Maize  Density  Physiological characteristics  Yield
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