| 不同降雨强度中度石漠化地区氮、磷、钾流失特征 |
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| 引用本文： | 甘华军,王震洪,张丝菊,杨成波.不同降雨强度中度石漠化地区氮、磷、钾流失特征[J].贵州农业科学,2009,37(4). |
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| 作者姓名： | 甘华军 王震洪 张丝菊 杨成波 |
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| 作者单位： | 1. 贵州大学,林学院,贵州,贵阳,550025
2. 贵州大学,生命科学学院,贵州,贵阳,550025 |
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| 摘 要： | 采用人工模拟降雨方式,研究了中度石漠化山地N、P、K流失的特征.结果表明,不同降雨强度下,径流中N、P、K流失浓度,K>N>P,且径流中N和K的浓度总体上呈下降趋势,P流失没有明显下降.随着降雨历时,径流中的N、K浓度波动性较小,而P波动性较大.不同雨强,营养元素间关系有正相关,也有负相关.
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| 关 键 词： | 人工模拟降雨 降雨强度 中度石漠化 养分流失特征 |
Loss Characteristic of N,P and K in the Moderate Rocky Desertification Region under Different Rainfall Intensity |
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| GAN Hua-jun,WANG Zheng-hong,ZHANG Si-ju,YANG Cheng-bo.Loss Characteristic of N,P and K in the Moderate Rocky Desertification Region under Different Rainfall Intensity[J].Guizhou Agricultural Sciences,2009,37(4). |
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| Authors: | GAN Hua-jun WANG Zheng-hong ZHANG Si-ju YANG Cheng-bo |
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| Institution: | 1.College of Forest;Guizhou University;Guiyang;Guizhou 550025;2.College of Life Sciences;China |
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| Abstract: | The loss characteristic of N,P and K nutrient in the hilly area with the moderate rocky desertification level was studied under the condition of artificial simulated rainfall.The result showed that the loss concentration of N,P and K nutrient in surface runoff was K>N>K under different rainfall intensity and the N and K concentration in surface runoff declined overall but P loss was not obvious.There were a little fluctuation in N and K concentration in surface runoff during the observed period but the fluc... |
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| Keywords: | artificial simulated rainfall rainfall intensity moderate rocky desertification nutrient loss charucteristic |
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