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湖北高山草地白三叶种群的能量动态特征
引用本文:包国章,李向林,郭继勋,沈万斌,房春生. 湖北高山草地白三叶种群的能量动态特征[J]. 东北师大学报(自然科学版), 2001, 33(2): 84-88
作者姓名:包国章  李向林  郭继勋  沈万斌  房春生
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. 东北师范大学国家草地生态工程实验室,
基金项目:国家“九五”科技攻关项目 ( 960 1 60 2 0 2 )
摘    要:生长季白三叶各构件热值及能量呈周期性波动,构件热值的大小顺序为:花序>葡匐茎>叶片>根部,分别为21.1,20.5,20.0,19.0kJ/g。叶片第一个热值峰值期处于5月末至6月末,第二个峰值期处于8月末至11月初。除了花序能量较低外,白三叶其余各构件能量年平均值差异并不明显,叶片、葡匐茎及根部能量的最大值分别为2423.6,1926.1,1710.1kJ/m^2;季节平均值分别为1383.5,1424.6,1386.1kJ/m^2。白三叶构件能量及热值与生长日长短、降雨及气温之间存在显著或极显著相关关系。

关 键 词:高山草地 白三叶 能量动态 湖北 构件热值 豆科牧草 构件能量
文章编号:1000-1832(2001)02-0084-05
修稿时间:2000-12-15

Studies on patterns of energy dynamics of Trifolium repens on high mountain swards in Hubei China
BAO Guo zhang ,LI Xiang lin ,GUO Ji xun ,SHEN Wan bin ,FANG Chun sheng. Studies on patterns of energy dynamics of Trifolium repens on high mountain swards in Hubei China[J]. Journal of Northeast Normal University (Natural Science Edition), 2001, 33(2): 84-88
Authors:BAO Guo zhang   LI Xiang lin   GUO Ji xun   SHEN Wan bin   FANG Chun sheng
Affiliation:BAO Guo zhang 1,LI Xiang lin 2,GUO Ji xun 3,SHEN Wan bin 1,FANG Chun sheng 1
Abstract:Both the caloric value and the energy of modules of T. repens had cyclical fluctuations in growing season. The order of caloric value of modules of T. repens was inflorescence(21.1 kJ/g),stolon(20.5 kJ/g),leaf(20.0 kJ/g),and root(19.0 kJ/g).The first peak time of leaf caloric value occurred between May and June, while the second one occurred from August to November. There was little difference of average energy among leaf, stolon and root. The seasonal average of energy of leaf, stolon and root was 1 383.5,1 424.6, 1 386.1 kJ/m 2 respectively, while the max value was 2 423.6,1 926.1,1 710.1 kJ/m 2 . There were significant correlationships between caloric values, energy of T. repens modules and growing days, precipitation and temperature.
Keywords:high mountain swards  Trifolium repens  energy dynamics
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