| 温度条件对麦田土壤溶液养分浓度的影响 |
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| 引用本文： | 刘瑞文,陈世庆,董振国,鲁全国.温度条件对麦田土壤溶液养分浓度的影响[J].生态学报,1993,13(2):164-170. |
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| 作者姓名： | 刘瑞文 陈世庆 董振国 鲁全国 |
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| 作者单位： | 中国科学院、国家计划委员会地理研究所，中国科学院、国家计划委员会地理研究所，中国科学院、国家计划委员会地理研究所，中国科学院、国家计划委员会地理研究所 北京 100101，北京 100101，北京 100101，北京 100101 |
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| 摘 要： | 本文用实测资料分析了温度对麦田土壤溶液养分浓度的影响。研究表明,在农田土壤水分不亏缺的条件下,温度与麦田土壤溶液浓度呈正相关关系。随着太阳辐射增强,温度升高,土壤溶液中NO_3-N浓度增大,到14:00—15:00时,出现极大值。土壤溶液中钾浓度的高峰期基本是在中午温度高的时刻,低峰期在夜晚和午前10:00—11:00左右。10:00—11:00时的低值,可能与根系的同化吸收有关。土壤溶液养分浓度日较差大,光合面积增长快,营养生长旺盛。
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| 关 键 词： | 温度 麦田 土壤溶液 |
| 收稿时间： | 1991/1/25 0:00:00 |
| 修稿时间： | 1992/8/22 0:00:00 |
THE EFFECTS OF TEMPERATURE ON THE NUTRIENT CONCENTRATIONS IN SOIL SOLUTION |
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| Liu Rui-Wen.THE EFFECTS OF TEMPERATURE ON THE NUTRIENT CONCENTRATIONS IN SOIL SOLUTION[J].Acta Ecologica Sinica,1993,13(2):164-170. |
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| Authors: | Liu Rui-Wen |
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| Institution: | Institute of Geography Aeademia Sinica; 100101 |
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| Abstract: | Study was conducted to undersdand the effects of temperature on the nutrient concentrations in soil solution. The result showed that there was a significantly positive correlation between soil temperature and nutrient concentration in soil solution when soil water was pot deficient to plant growth. NO3-N concentration decreased rapidly due to root uptake in afternoon of a sunny day. The maximum concentration of potassium in soil solution was found when the highest temperature was approximately reached at 14 P.M. , and the minimum concentration in night and between 10 A.M. and 11 A.M. The minimum concentration between 10 A.M. and 11 A.M. may be due to potassium uptake by plant. The LAI of plant increased rapidly and plant grew fastly when the nutrient concentration in soil solution had a great daily fluctuation . |
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| Keywords: | temperature nutrient concentration in soil solution NO3-N NH4-N winter wheat growth |
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