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作 者 ：刘瑞文,陈世庆,董振国,鲁全国

期 刊 ：生态学报 1993年 13卷 2期 页码：164~170

关键词：温度；土壤溶液浓度；NO_3-N浓度；NH_4-N浓度；冬小麦生长量；

Keywords:temperature, nutrient concentration in soil solution, NO3-N, NH4-N, winter wheat growth.,

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。

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...

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