杂交粳稻超高产群体的冠层结构特点研究

应用生态学报 ›› 2003, Vol. ›› Issue (6): 913-916.

杂交粳稻超高产群体的冠层结构特点研究

陈进红¹, 张国平¹, 郭恒德², 毛国娟³

1. 浙江大学农学院农学系, 杭州 310029;
2. 浙江省桐乡市农林局, 桐乡 314500;
3. 浙江省农业厅农作物管理局, 杭州 310004

收稿日期:2000-10-13 修回日期:2001-08-09
通讯作者: 陈进红,男,1964年出生,博士,副教授,主要从事作物生理生态及农业生态学研究和教学工作,发表论著20多篇(部).Tel:0571-86971620,E-mail:chenjhon@mail.hz.zj.cr.
基金资助:
浙江省科委“九五”科技攻关重点资助项目(981102313)

Characteristics of canopy structure of super high yielding Japonica hybrid rice community

CHEN Jinhong¹, ZHANG Guoping¹, GUO Hengde², MAO Guojuan³

1. Department of Agronomy, Zhejiang University, Hangzhou 310029, China;
2. Agriculture and Forestry Bureau of Tongxiang City, Zhejiang Province, Tongxiang 314500, China;
3. Agriculture Department of Zhejiang Province, Hangzhou 310004, China

Received:2000-10-13 Revised:2001-08-09

摘要/Abstract

摘要： 研究了杂交粳稻超高产群体的苗穗粒结构及干物重在冠层不同层次、不同器官的分布,叶面积配置及光强分布等冠层结构特点.结果表明,杂交粳稻超高产群体冠层总干物重及40cm以下、40～60cm、60～80cm和80cm以上4个层次的干物重分别比常规粳稻高32.29%及29.12%、13.95%、16.45%和100.17%.杂交粳稻叶片(同化器官)与穗(库器官)干重分别占总干物重的24.8%与12.8%,高于常规稻;而叶鞘与茎(贮藏器官)的干重分别占总干物重的33.6%和28.9%,低于常规粳稻.杂交粳稻超高产群体冠层叶面积配置比较合理,齐穗期40cm以上冠层LAI达5.44.冠层光强上下分布比较均匀,60cm以下冠层光强比常规稻高13.1%～37.0%,而60cm以上冠层光强比常规稻低5.9%～12.2%;20cm、20～40cm、40～60cm和60～80cm各层消光系数分别比常规粳稻低35.1%、13.5%、29.1%和17.2%.

关键词: 杂交粳稻, 超高产, 冠层结构

Abstract: In this paper,the characteristics of canopy structure,such as the numbers of seedling,panicle and grain,the distribution of dry matters in different canopy layers and different organs,and the distributions of LAIand of solar radiation in different canopy layers of super high yielding community of japonica hybrid rice were studied,in comparison with normal japonica rice. The results showed that the total the dry matter weight and the dry matter weight of layers below 40 cm,40～60 cm,60～80 cm and above 80 cm of japonica hybrid rice canopy were 32.29 %,29.12%,13.95%,16.45% and 100.17% higher those that of normal japonica rice,respectively. The ratios of dry leaf (photosynthetic organ) and of dry panicle (sink organ) weight to total dry weight were 24.8% and 12.8%,respectively,which were greater than those of normal japonica rice,while the ratios of dry sheath and stem (storage organs) weight were 33.6% and 28.9%, respectively,which were lower than those of normal japonica rice. The allotment of LAIin different layers of japonica hybrid rice canopy was reasonable,and the LAIof above 40 cm layer at full heading stage reached 5.44. The solar radiation was well distributed inside japonica hybrid rice canopy,for example,the solar radiation in layers below 60 cm were 13.1%～37.0% higher,but 5.9%～12.2% lower above 60 cm than that of normal japonica rice. The extinction coefficients of solar radiation in layers below 20 cm,20～40 cm,40～60 cm and 60～80 cm of japonica hybrid rice canopy were 35.1 %,13.5%,29.1% and 17.2% lower than that of normal japonica rice,respectively.

Key words: Japonica hybrid rice, Super high yield, Canopy structure

中图分类号:

S181
S511

陈进红, 张国平, 郭恒德, 毛国娟. 杂交粳稻超高产群体的冠层结构特点研究[J]. 应用生态学报, 2003, (6): 913-916.

CHEN Jinhong, ZHANG Guoping, GUO Hengde, MAO Guojuan. Characteristics of canopy structure of super high yielding Japonica hybrid rice community[J]. Chinese Journal of Applied Ecology, 2003, (6): 913-916.

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