| 坡度对云南红壤径流中磷素浓度的影响研究 |
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| 引用本文： | 褚素贞,张乃明.坡度对云南红壤径流中磷素浓度的影响研究[J].中国农学通报,2015,31(28):173-178. |
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| 作者姓名： | 褚素贞 张乃明 |
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| 作者单位： | (;1.云南农业大学植保学院,昆明 650201；;2.云南农业职业技术学院,昆明 650031） |
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| 基金项目： | 云南省基金重点项目“滇池磷素表生迁移规律及水生生物响应研究”(2009CC006)。 |
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| 摘 要： | 水体富营养化的发生与农田土壤中磷的淋失有密切的关系。采用模拟降雨试验研究了土壤坡度对地表径流和亚地表径流中磷素浓度的影响。结果表明：在0°—10°范围内，地表径流中总磷、水溶性磷和颗粒态磷浓度和亚地表径流中水溶性磷浓度都随土壤坡度的增加而增加。亚地表径流中总磷和颗粒态磷在坡度为15°时均有一定程度的下降，其下降机理将做下一步分析研究。
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| 关 键 词： | 纤维亚麻种子 纤维亚麻种子 PEG胁迫 幼苗 干旱胁迫 理化特性 |
| 收稿时间： | 2015/6/15 0:00:00 |
| 修稿时间： | 2015/7/13 0:00:00 |
Effect of Slope on Phosphorus Concentration in Yunnan Red Soil Runoffs |
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| Chu Suzhen and Zhang Naiming.Effect of Slope on Phosphorus Concentration in Yunnan Red Soil Runoffs[J].Chinese Agricultural Science Bulletin,2015,31(28):173-178. |
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| Authors: | Chu Suzhen and Zhang Naiming |
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| Institution: | (;1.College of Plant Protection, Yunnan Agriculture University, Kunming 650201;2.Yunnan Agricultural Vocational-Technical College, Kunming 650031) |
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| Abstract: | There is an important relationship between the occurrence of water eutrophication and phosphorus leaching in farmland soil. The authors studied the effect of soil slope on phosphorus concentration by simulated rainfall experiments. The results showed that the total phosphorus concentration, water-soluble phosphorus concentration and particulate phosphorus concentration in surface runoff, and water-soluble phosphorus concentration in subsurface runoff increased with the increase of soil slope in the range of 0° to 10°. Total phosphorus and particle phosphorus concentration in subsurface runoff declined to a certain degree when the slope was 15°. The decline mechanism will be analyzed and researched further. |
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| Keywords: | simulated rainfall experiment soil slope phosphorus concentration runoff |
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