| 土温对植物生长的影响及其机理分析 |
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| 引用本文： | 范爱武,刘伟,刘炳成.土温对植物生长的影响及其机理分析[J].工程热物理学报,2004,25(1):124-126. |
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| 作者姓名： | 范爱武 刘伟 刘炳成 |
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| 作者单位： | 华中科技大学能源与动力工程学院,湖北,武汉,430074 |
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| 基金项目： | 国家重点基础研究发展规划项目(No.G2000026303)，国家自然科学基金(No.59976010)，教育部博士点基金(No.2000048731》 |
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| 摘 要： | 以二年生草本花卉黑心菊为材料,研究了土壤温度对其生长发育的影响。结果表明,加热株地上部的湿重和干重均比未加热株大,而加热株根系的湿重和干重则比未加热株小;且加热株具有较小的根冠比。这些说明适宜的土壤温度使根系的吸收活力增强,有利于植物地上部的生长发育,同时植物根系会通过功能补偿作用对不良土温做出适应性反应,以减少不良土温对植物的危害。
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| 关 键 词： | 土温 植物生长 鲜重 干重 根冠比 |
| 文章编号： | 0253-231X(2004)01-0124-03 |
| 修稿时间： | 2002年12月9日 |
EFFECT OF SOIL TEMPERATURE ON THE GROWTH OF PLANT AND AN ANALYSIS OF ITS MECHANISM |
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| FAN Ai-Wu LIU Wei LIU Bing-Cheng.EFFECT OF SOIL TEMPERATURE ON THE GROWTH OF PLANT AND AN ANALYSIS OF ITS MECHANISM[J].Journal of Engineering Thermophysics,2004,25(1):124-126. |
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| Authors: | FAN Ai-Wu LIU Wei LIU Bing-Cheng |
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| Abstract: | The effect of soil temperature on the growth was studied in Rudbeckia hirta, a biennial herbaceous flower.The results showed that the wet weight and dry weight of the over-ground part of the plant heated were heavier than those of the plant unheated; whereas the situation was reverse for the root systems of the two plants. Moreover, the plant that was heated has a smaller roots/canopy ratio. All the results indicated that a suitable soil temperature enhanced the absorption activity of the root system and was propitious to the growth of the over-ground part of the plant. At the same time,the plant did adaptation reaction to harmful soil temperature through function compensation. |
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| Keywords: | soil temperature plant growth wet weight dry weight roots/canopy ratio |
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