混播草地不同种群再生性的研究

应用生态学报 ›› 2002, Vol. ›› Issue (8): 930-934.

混播草地不同种群再生性的研究

于应文^1,2, 蒋文兰², 冉繁军², 徐震², 王元素²

1. 兰州大学干旱农业生态国家重点实验室, 兰州 730000;
2. 兰州大学草地农业科技学院, 兰州 730020

收稿日期:2002-04-07 修回日期:2002-06-03 出版日期:2002-08-15
通讯作者: 于应文,男,1969年生,助理研究员,在读博士生,主要从事草地放牧管理和草地生态学方面的研究,已发表论文6篇.E-mail:nanzb@public.lz.gs.cn
基金资助:
国家重点基础研究发展规划项目(G2000018602);国家“九五“科技攻关资助项目(960160201A).

Regrowth of different plant populations in mixed pasture

YU Yingwen^1,2, JIANG Wenlan², RAN Fanjun², XU Zhen², WAN Yuansu ²

1. State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730000;
2. College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020

Received:2002-04-07 Revised:2002-06-03 Online:2002-08-15

摘要/Abstract

摘要： 在不同刈割频率和时间尺度下,对混播草地多年生黑麦草(Lolium perenne)分蘖数和叶片生长、白三叶(Trifolium repens)分枝数和匍匐茎生长及不同种群年产量和组分进行了连续3年的监测研究.结果表明,刈割能刺激黑麦草叶片、白三叶匍匐茎生长和分枝数发生,保持混播草地黑麦草和白三叶的适宜比和稳定共存,提高草地年生产力,但不同刈割频率和刈割时间对其影响差异不显著(P>0.05).黑麦草叶片生长对6月刈割效果比8月明显,而白三叶匍匐茎生长则与之相反,黑麦草产量主要取决于叶片生长,白三叶产量主要取决于匍匐茎分枝数.刈割的黑麦草、白三叶产量组分比分别为50%、15%,比试验前约低10%、5%,而CK为39%、6%.

关键词: 刈割, 多年生黑麦草, 白三叶, 再生性

Abstract: The number of tillers and leaf regrowth of perennial ryegrass (Lolium perenne) and that of branches and stolon growth of white clover (Trifolium repens) in mixed ryegrass/white clover pastures under different cutting frequency were monitored from 1998 to 2000,and the herbage yields and the proportion of each component in total yields were also determined. The results showed that cutting could stimulate perennial ryegrass leaf regrowth and white clover branching, maintain proper proportions of perennial ryegrass and white clover in the mixed pasture, and create the environments for the coexistence of the two species. Therefore, the total annual dry matter yields of the pasture was increased. However, cutting frequency had no significant effects on herbage yields and vegetative composition (P>0.05). More leaf regrowth of perennial ryegrass was found in theplots cut in June than in August, whereas white clover exhibited an inverse trend. The herbage yield of perennial ryegrass depended on its leaf regrowth, while the dry matter accumulation of white clover relied on its stolon branching numbers. During the period of three year experiment, the proportion of perennial ryegrass and white clover in total herbage yields obtained from the plots under cutting was 50% and 15%, respectively, approximately 10% or 5% lower than its initial value,while CKwas 39% and 6%,respectively.

Key words: Cutting, Lolium perenne, Trifolium repens, Regrowth

中图分类号:

S812.3

于应文, 蒋文兰, 冉繁军, 徐震, 王元素. 混播草地不同种群再生性的研究[J]. 应用生态学报, 2002, (8): 930-934.

YU Yingwen, JIANG Wenlan, RAN Fanjun, XU Zhen, WAN Yuansu . Regrowth of different plant populations in mixed pasture[J]. Chinese Journal of Applied Ecology, 2002, (8): 930-934.

参考文献

[1] Chapman DF,Robson MJ,Snaydon RW.1992.The carbon economy of clonal plants of Trifolium repens L.J Exp Bot,43:427～434
[2] Elgersma,Li F-R.1997.Effects of cultivar and cutting frequency on dynamics of stolon growth and leaf appearance in white clover grown in mixed swards. Grass Forage Sci,52:370～380
[3] Elgersma A,Nassiri M,Schlepers H.1998.Competition in perennial ryegrass white clover mixtures under cutting I.Dry matter yield, species composition and nitrogen fixation. Grass Forage Sci,53:353～366
[4] Elgersma A,Schlepers CTH.1997.Performance of white clover/perennial ryegrass mixtures under cutting.Grass Forage Sci,52:134～146
[5] Fan F-C(樊奋成),Gao Z-S(高振生),Han J-G(韩建国),et al.1995.Effects of cutting on leaf tissue turnover for perennial ryegrass. Acta Agrestia Sin(草地学报),3(1):15～21(in Chinese)
[6] Fan F-C(樊奋成),Wang P(王培), Han J-G(韩建国).1995.Effects of cutting on leaf tissue turnover for white clover. Acta Agrestia Sin(草地学报),3(4):311～316(in Chinese)
[7] Fulkerson WJ,Michell PJ.1987.The effect of height and frequency of mowing on the yield and composition of perennial ryegrass white clover swards in the autumn to spring period. Grass Forage Sci,42:169～174
[8] Harper JL.1977.Population Biology of Plants.London:Academic Press.20～93
[9] Hernández GA, Matthew C,Hodgson J.1999.Tiller size/density compensation in perennial ryegrass miniature swards subject to differing defoliation heights and a proposed productivity index. Grass Forage Sci,53:347～356
[10] Hglind M,Frankow-Lindnberg B.1998.Growthing point dynamics and spring growth of white clover in a mixed sward and the effects of nitrogen application. Grass Forage Sci, 53: 338～345
[11] Kays S,Harper JL.1974.The regulation of plant and tiller density in a grass swards. J Ecol,62:97～105
[12] Li F-R(李锋瑞),Elgersma A.1996. Leaf development responses of Trifolium repens to climatic and non-climatic factors. Acta Phytoecol Sin(植物生态学报),22(1):8～22(in Chinese)
[13] Nassiri M,Schlepers H.1998.Competition in perennial ryegrass-white clover mixtures under cutting Ⅱ.Leaf characteristics, light interception and dry-matter production during regrowth. Grass Forage Sci,53:367～379
[14] Thompson L,Harpper JL.1988.The effect of grasses on the quality of transmitted radiation and its influence on the growth of white clover Trifolium repens. Oecologia,75:343～347
[15] Teuber N,Laidlaw AS.1996.Influence of irradiance on branch growth of white clover stolons in rejected areas within grazed swards. Grass Forage Sci,51:73～80
[16] Wang G(王刚),Jiang W-L(蒋文兰).1995.Relationships between the composition of pastures and quick-acting phosphorus and nitrogen. Acta Agrestia Sin(草地学报),3(1):42～47(in Chinese)
[17] Woledge J,Reyneri A,Tewson V,et al.1992.The effect of cutting on the proportions of perennial ryegrass and white clover in mixtures. Grass Forage Sci,47:169～179
[18] Xia J-X(夏景新).1993.Grazing ecology and its application in pasture management. Grassland Chin (中国草地),4:64～70(in Chinese)
[19] Yang Y-F(杨允菲),Fu L-Q(傅林谦),Zhu L(朱琳).1995. An analysis on number growth and decline of populations and the interaction of Lolium perenne and Trifolium repens in middle mountain mixture pasture in subtropical region of China. Acta Agrestia Sin(草地学报),3(2):103～111(in Chinese)