不同积温和种植密度对饲用黑麦分蘖动态的影响

应用生态学报 ›› 2004, Vol. ›› Issue (3): 413-419.

不同积温和种植密度对饲用黑麦分蘖动态的影响

李志坚¹, 周道玮¹, 胡跃高²

1. 东北师范大学草地研究所, 长春 130024;
2. 中国农业大学作物学院, 北京 100094

收稿日期:2003-04-18 修回日期:2003-09-15 出版日期:2004-03-15
通讯作者: 李志坚,男,1968年6月生,副教授,主要从事饲草、饲料栽培及人工草地建植技术研究,发表论文23篇,参编著作4部,E-mail:1izj004@enu.edu.cn
基金资助:
2000年农业科技跨越计划项目;国家重点基础研究发展规划资助项目(G2000018606)

Effects of accumulated temperature and planting density on tillering dynamics of forage rye

LI Zhijian¹, ZHOU Daowei¹, HU Yuegao ²

1. Institute of Grassland Science, Northeast Normal University, Changchun 130024, China;
2. College of Crop Science, China Agricultural University, Beijing 100094, China

Received:2003-04-18 Revised:2003-09-15 Online:2004-03-15

摘要/Abstract

摘要： 应用回归均匀设计构造试验方案,采用分期播种的方法,研究了不同冬前积温、种植密度对饲用黑麦单株分蘖动态、群体分蘖动态以及有效茎数动态变化的影响,并建立了模拟模型.结果表明,饲用黑麦单株分蘖数量同时受播期、播量的影响,生长前期主要受播期早晚的影响,生长后期主要受播种密度的制约.总体来看,播期越早、播量越小,其单株分蘖数量就越多,反之就越少.饲用黑麦不论是在生长前期、中期,还是后期,随着播期推迟,各播量群体分蘖数不断下降;随着播量增大,各播期群体总蘖数不断上升.饲用黑麦群体有效茎数取决于播期和播量的共同作用.播期早,要控制播量不宜过大,合理的群体结构主要依靠单株有效茎数的增长潜力来保证;播期晚,要防止播量过小,合理的群体结构主要依靠主茎数量的增加来实现.

Abstract: Using equal design method,a field experiment was carried out at Wuqiao field station of China Agricultural University in Hebei Province to study the effects of different accumulated temperature before winter and planting density on tillering dynamics of forage rye (Secale cereale L.).The results showed that the tiller number per plant was affected by sowing date and seed density.In the prophase of forage rye,the tiller number per plant was mainly influenced by sowing date;while in the anaphase,it was mainly determined by seed density. Generally,earlier and fewer sowing norm could raise the tiller number in individual plant.In the prophase,metaphase,or anaphase of forage rye,the tiller number per unit area decreased with the postponing of sowing date,and increased with the increase of sowing norm.The sowing date and sowing norm had decisive effect on the number of effective stem per unit area.Suitable population structure was dependent on the increase of effective stem number per plant under the conditions of earlier sowing,and of effective stem number per unit area under the conditions of later sowing.

中图分类号:

李志坚, 周道玮, 胡跃高. 不同积温和种植密度对饲用黑麦分蘖动态的影响[J]. 应用生态学报, 2004, (3): 413-419.

LI Zhijian, ZHOU Daowei, HU Yuegao . Effects of accumulated temperature and planting density on tillering dynamics of forage rye[J]. Chinese Journal of Applied Ecology, 2004, (3): 413-419.

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