不同放牧强度对多年生黑麦草──白三叶草地群体密度的影响

doi:10.11733/j.issn.1007-0435.1995.03.003

›› 1995, Vol. 3 ›› Issue (3): 190-197.DOI: 10.11733/j.issn.1007-0435.1995.03.003

不同放牧强度对多年生黑麦草──白三叶草地群体密度的影响

朱琳, 黄文惠, 苏加楷, 傅林谦

中国农业科学院畜牧研究所, 北京100094

出版日期:1995-08-15 发布日期:2012-07-11
基金资助:
国家“八五”科技攻关项目85－11－02－04

The Effect of Population Density in the Perennial Ryegrass/White Clover Mixed Swards under Different Grazing Intensity

Zhu Lin, Huang Wenhui, Su Jiakai, Fu Linqian

Chinese Academy of Agricultrue Sciences, Beijing, 100094

Online:1995-08-15 Published:2012-07-11

摘要/Abstract

摘要： 在中、高放牧强下黑麦草分蘖密度略有下降,而在低放牧强度下则有所上升。白三叶枝条密度受放牧强度影响较小。秋季的重牧使黑麦草分蘖密度极显著下降(P<0.01)。6月份随着放牧强度的增强黑麦草案死亡数显著减少(P<0.05),草地群体密度亦随之减少(P<0.05)。在秋季随着放牧强度的增大黑麦草单蘖重明显减少(P<0.05)。黑麦草和白三叶的单菜(枝)重与其密度均呈强负相关(P<0.01)。白三叶的单枝重与生物量呈正相关(P<0.05)。以上分析表明,中等放牧强度(70%利用率)有利于保持合理的草地群体密度和较高的生物量。

关键词: 多年生黑麦草, 白三叶, 放牧强度, 群体密度, 单蘖(枝)重, 生物量

Abstract: The tiller density of perennial ryegrass decreased under medium and high grazing intensity,and increased under low grazing intensity.The little effect happened with the branch numbers of white clover under various grazing intensity.In the autumn, high grazing made the tiller’ density of perennial ryegrass decreased significiantly (p<0.01).In early June, the dead tiller of perennial ryegrass decreased significiantly with the grazing intensity increasing (p<0.05), and the population density of pasture also decreased (p<0.05).With the development of grazing intensity, each tiller weight of perennial ryegrass decreased significiantly (p<0.05) in the autumn.Each tiller weight of perennial ryegrass and white clover were corrected negatively strong with their density (p<0.01), and the til1er weighe of white c1over negatively positively withtheir biomass (p<0.O5).Therefore, medium grazing intensity (70% grazing rate) is benifit for keeping the population density of the pasture reasonably and higher biomass.

Key words: Perennial ryegrass, White clover, Grazing intensity, Population density, Tiller weight, Biomass

朱琳, 黄文惠, 苏加楷, 傅林谦. 不同放牧强度对多年生黑麦草──白三叶草地群体密度的影响[J]. , 1995, 3(3): 190-197.

Zhu Lin, Huang Wenhui, Su Jiakai, Fu Linqian. The Effect of Population Density in the Perennial Ryegrass/White Clover Mixed Swards under Different Grazing Intensity[J]. , 1995, 3(3): 190-197.

参考文献

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不同放牧强度对多年生黑麦草──白三叶草地群体密度的影响

The Effect of Population Density in the Perennial Ryegrass/White Clover Mixed Swards under Different Grazing Intensity

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