| 旱地赤红壤钾素的Q/I特性 |
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| 引用本文： | 姚建武,段炳源,艾绍英. 旱地赤红壤钾素的Q/I特性[J]. 生态环境, 2000, 9(3): 243-245 |
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| 作者姓名： | 姚建武 段炳源 艾绍英 |
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| 作者单位： | 广东省农科院土壤肥料研究所,广东,广州,510640 |
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| 基金项目： | 农业部“八五”重点科技项目!（88-03-02-03） |
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| 摘 要： | 对12种旱地赤红壤与1种参比水稻土的钾素Q/I特性进行比较，结果表明，旱地由于土壤粘粒少，有机质质量分数低等因素的影响，其易释放钾库及供钾能力均小，钾位的缓冲性能很差，阳离子交换量较低；如不施钾肥或施肥不当，会造成作物减产或钾素损失。而由不同母质发育的旱地赤红壤，Q/I特性差别不大。
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| 关 键 词： | 旱地赤红壤 钾素 Q/I |
| 修稿时间： | 2000-06-28 |
Q/I Characteristics of Potassium in Upland Latosolic Red Soil |
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| YAO Jian-wu,DUAN Bing-yuan,AI Shao-ying. Q/I Characteristics of Potassium in Upland Latosolic Red Soil[J]. Ecology and Environmnet, 2000, 9(3): 243-245 |
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| Authors: | YAO Jian-wu DUAN Bing-yuan AI Shao-ying |
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| Abstract: | Q/I characteristics of potassium from 12 samples of upland latosolic red soil and 1 sample of rice soil were studied. The results indicate that potassium releasing capacity and potassium supply capability of upland soil are all less than that of rice soil, and the former also has bad PBCK and low CEC. This is induced by low clay content, low organic matter content and other factors of upland soil. So if there is no potassium fertilization or if the potassium fertilization is unsuitable, the crops yield will decrease or potassium will be lost from soil. There is no significant difference in Q/I characteristics among upland soils developed from different parent rocks. |
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| Keywords: | upland latosolic red soil potassium Q/I |
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