| 测定土壤pH的新混合指示剂及其使用 |
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| 引用本文： | 张献义.测定土壤pH的新混合指示剂及其使用[J].土壤学报,1979,16(2):184-189. |
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| 作者姓名： | 张献义 |
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| 作者单位： | 南京林产工业学院 |
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| 摘 要： | 土壤酸碱性是影响植物生长的重要因素之一。在林业生产中,往往根据土壤的pH值决定树种适生的土壤类型。在测定土壤pH的方法中,电位法的精度较高。混合指示剂比色法的精度较差,一般认为其误差在0.5个pH单位左右。关于我国常用的几种混合指示剂在使用上的问题和优缺点,袁可能和朱祖祥(1956)已作了研究。
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THE USE OF A NEW MIXED INDICATOR FOR DETERMINATION OF pH VALUE OF SOILS |
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| Zhang Xian-yi.THE USE OF A NEW MIXED INDICATOR FOR DETERMINATION OF pH VALUE OF SOILS[J].Acta Pedologica Sinica,1979,16(2):184-189. |
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| Authors: | Zhang Xian-yi |
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| Institution: | Nanjing Technical Institute of Forest Products |
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| Abstract: | A colorimetric method of new mixed indicator with a wide range and clear changes of colour for soil pH values has been studied. This method was compared with electrometric method using more than eighty soil samples from different parts of China. The results obtained from the two mothods were well agreed and their maximum variation was about 0.3 pH unit. Twenty-two soil samples of various main soil types were examined for pH by different workers, the average deviation was also less than 0.3 pH unit. |
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