Acta Agrestia Sinica

›› 2001, Vol. 9 ›› Issue (2): 87-91,105.DOI: 10.11733/j.issn.1007-0435.2001.02.003

Previous Articles     Next Articles

Relationship Between Nutritive Value Changes and Environmental Factors in Mixed Sward of Perennial Ryegrass/White Clover

HU Tian-ming1, WANG Pei2, YAO Ai-xing 3   

  1. 1. Northwestern Agri.Forestry Sci Tech.University, Yangling Shanxi 712100, China;
    2. China Agricultural University, Beijing 100094, China;
    3. Ningxia Agricultural College, Yiong ning, Ningxia 750100, China
  • Received:2000-08-24 Revised:2000-10-27 Online:2001-05-15 Published:2001-05-15

多年生黑麦草/白三叶人工草地饲用价值及其与环境的关系

呼天明1, 王培2, 姚爱兴3   

  1. 1. 西北农林科技大学, 陕西杨凌, 712100;
    2. 中国农业大学, 北京, 100094;
    3. 宁夏农学院, 宁夏, 永宁, 750100
  • 作者简介:呼天明(1958- ),男,副教授,博士,1982年本科毕业于内蒙古农牧学院草原系,1996年于中国农业大学草地所取得博士学位,主要从事牧草种质评价及草坪学科研及教学工作,发表论文30余篇

PDF

Abstract: Field works on relationship between nutritive value changes and environmental factors in mixed sward of perennial ryegrass/white clover Lolium perenne/Trifolium repens were carried out at Nanshan Ranch,Hunan province(25°48′～25°58′N,110°36′～110°40′E) during May to November,1994.Samples of plant and samples soil were analysed during Dec,1994 to Dec,1995.It showed by statistical analysis that grazing lead to degeneration in mixed sward of perennial ryegrass/white colver. The results showed that under the condition of different grazing,nutritive value was different in artificial sward.However,the nutritive value of artificial sward was the highest in the condition of moderate grazing. The available phosphorus contents in 0～10 cm soil layer was of the first important factor causing deteriotation.It was also important factor causing deterioration that grazing lead to soil erosion,surface crusting and interrelation action.

Key words: Artificial sward, Nutritive value, Environmenal factor, Grazing intensity

摘要： 笔者于1994年～11月在湖南南山牧场研究黑麦草/白三叶人工草地的饲用价值及其与环境的关系.当年12月～翌年12月对植物及土壤进行分析,结合放牧强度进行统计.结果表明,在不同放牧强度条件下,多年生黑麦草/白三叶人工草地的饲用价值各异,其中以适度放牧区较高.引起人工草地退化的首要因素是0～10cm土壤速效磷含量,但放牧引起的土壤紧实及其相互作用则是退化的重要因素.分析人工草地的饲用价值及其退化原因,笔者认为,适度放牧不但保持草地的较高利用价值,而且是维系群落稳定防止退化的重要措施.

关键词: 人工草地, 饲用价值, 环境因素, 放牧强度

CLC Number: