| 红豆草地下部植物量和光能利用率的研究 |
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| 引用本文： | 高青山 胡自治. 红豆草地下部植物量和光能利用率的研究[J]. 草业科学, 1990, 7(5): 25-29 |
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| 作者姓名： | 高青山 胡自治 |
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| 作者单位： | 吉林省农科院畜牧所，甘肃农业大学草原系 公主岭 136100，兰州 730000 |
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| 摘 要： |
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| 关 键 词： | 红豆草地 植物量 光能利用 |
A STUDY OF PHYTOMASS AND SOLAR ENERGY CONVERSION RATE FOR OF UNDERGROUND PARY IN SAINFOIN |
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| Gao Qingshan. A STUDY OF PHYTOMASS AND SOLAR ENERGY CONVERSION RATE FOR OF UNDERGROUND PARY IN SAINFOIN[J]. Pratacultural Science, 1990, 7(5): 25-29 |
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| Authors: | Gao Qingshan |
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| Abstract: | The vertical distribution of the underground phytomass in sainfoin grassland presented progressive two-T pattern and its seasonal fluctuation expressed monovally curve. The maximum phytomass 1795.27g / m~2dry matter (DM) or 1362.59g / m~2organic matter (OM) occurred early in October. The net primary productivity of underground was 813.73g / m~2. Yr DM or 484.24g / m~2. yr OM. The majoy environmental factors that limited the growth of underground phytomass were the soil temperature, ambient temperature and soil moisture. Conversion efficiency of the underground part for total solar radiation, and for physiological radiation were 0.153% and 0.313% respectively, and for photosynthetically available radiation during the growth season was 0.408%. |
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| Keywords: | Sainfoin grassland Phytomass Net primary productivity Conversion efficiency for solar radiation |
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