| 直接提取比色法快速测定紫色土壤中腐殖酸含量 |
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| 引用本文： | 冯艳红,张焱,邹强,游春梅,杨剑虹.直接提取比色法快速测定紫色土壤中腐殖酸含量[J].安徽农业科学,2007,35(21):6496-6497,6543. |
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| 作者姓名： | 冯艳红 张焱 邹强 游春梅 杨剑虹 |
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| 作者单位： | 1. 西南大学资源环境学院,重庆,400716
2. 文山师范高等专科学校生化系,云南文山,663000 |
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| 摘 要： | 用ASI浸提剂和pH值8.50、.5 mol/L NaHCO3溶液提取并用比色法快速测定紫色土中的腐殖酸,将其结果与0.1 mol/L Na4P2O7-0.1 mol/L NaOH提取腐殖酸比较,结果表明:对于南方紫色土壤,ASI、NaHCO3提取腐殖酸结果较碱性Na4P2O7提取腐殖酸结果偏低,约为Na4P2O7提取结果的22.4%、9.2%,但相关系数分别为0.9760、.914(n=8),呈极显著相关关系;与常规方法测得有机质结果比较,得到相关系数为0.920、0.889(n=8)的极显著关系。因此,两种方法均可较好地反映土壤腐殖酸含量。
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| 关 键 词： | 腐殖酸 紫色土 提取方法 比色法 |
| 文章编号： | 0517-6611（2007）21-06496-02 |
| 修稿时间： | 2007-04-04 |
Straightly Extracting and Rapidly Determining Humic acid Level of Purple Soil by Colorimetry |
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| FENG Yan-hong et al.Straightly Extracting and Rapidly Determining Humic acid Level of Purple Soil by Colorimetry[J].Journal of Anhui Agricultural Sciences,2007,35(21):6496-6497,6543. |
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| Authors: | FENG Yan-hong |
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| Institution: | College of Resources and Environmental Sciences; Southwest University; Chongqing 400716 |
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| Abstract: | This text uses the colorimetry to determine humic acid in purple soil extracted by ASI and pH 8.5,0.5 mol/L NaHCO3,comparing the results with humic acid extracted by 0.1 mol/l Na4P2O7-0.1 mol/l NaOH.It shows the correlation coefficients of humic acid are 0.976 and 0.914(n=8),and they are best correlative.Synchronously;humic acid extracted by ASI and NaHCO3 apartly are 22.4%and 9.16% of humic acid extracted by Na4P2O7.Comparing the results with organic matter extracted by conventional method,it can be found out R=0.920、0.889(n=8).Thus two methods can both reflect humic acid level in purple soil. |
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| Keywords: | Humic acid Purple soil Extract method Colorimetry |
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