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| 休牧草地鸭茅种群能量动态的初步研究 | |
| 引用本文： | 包国章,李向林,陆光华,马小凡.休牧草地鸭茅种群能量动态的初步研究[J].草业学报,2001,10(4):107-111. |
| 作者姓名： | 包国章 李向林 陆光华 马小凡 |
| 作者单位： | 1. 吉林大学环境科学与工程系, 2. 中国农业科学院畜牧研究所, 3. 东北师范大学环境科学系, |
| 基金项目： | 国家“九五”科技攻关 96 0 16 0 2 0 2项目的一部分 |
| 摘 要： | 在 4月份的高山休牧草地 ,鸭茅有 4 2 0 .5kJ/m2 的地上能量积累。鸭茅种群多数器官的热值及能量呈多峰曲线型变化 ,单蘖能量受种群密度影响极显著。鸭茅的生殖分配为 9.1% ,牧草生殖生长降低了鸭茅的热值 ,鸭茅能量积累与温度显著正相关 ,而与降水量呈显著负相关 |
| 关 键 词： | 鸭茅 能量 休牧 高山草地 |
| 文章编号： | 1004-5759(2001)04-0107-05 |
| 修稿时间： | 2000年12月15日 |
Preliminary study of energy dynamics of Dactylis glomerata on the swards of rest grazing |
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| BAO Guo?zhang ,LI Xiang?lin ,LU Guang?hua , MA Xiao?fan.Preliminary study of energy dynamics of Dactylis glomerata on the swards of rest grazing[J].Acta Prataculturae Sinica,2001,10(4):107-111. | |
| Authors: | BAO Guo?zhang LI Xiang?lin LU Guang?hua MA Xiao?fan |
| Institution: | BAO Guo?zhang 1,LI Xiang?lin 2,LU Guang?hua 3, MA Xiao?fan 1 |
| Abstract: | D.glomerata on the grazed swards had already accumulated 420.5 kJ aboveground caloric content. There were several peaks of caloric value and caloric content of D.glomerata during the growing season. There was a significant relationship between tiller density and average tiller energy. The reproductive allocation of D.glomerata was 9.1%. The caloric value of D.glomerata dropped dramatically due to the reproductive growth. There was a significant positive relationship between energy accumulation and temperature(P<0.01)and a significant negative relationship between energy accumulation and precipitation(P<0.05). |
| Keywords: | D glomerata energy rest grazing high mountain swards |
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