| 宁南山区苜蓿地土壤养分的变化规律 |
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| 引用本文： | 潘占兵,李生宝,马璠,董立国,季波,王月玲,张源润. 宁南山区苜蓿地土壤养分的变化规律[J]. 江西农业学报, 2011, 23(4): 86-90 |
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| 作者姓名： | 潘占兵 李生宝 马璠 董立国 季波 王月玲 张源润 |
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| 作者单位： | 宁夏农林科学院,荒漠治理研究所,宁夏,银川,750002 |
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| 基金项目： | 国家自然科学基金，国家"十一五"科技支撑计划项目"半干旱黄土丘陵区退化生态系统恢复技术研究"，宁夏自然科学基金"宁夏退耕还林工程效益监测与定量评价研究" |
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| 摘 要： | 对宁南半干旱黄土丘陵区不同坡位及不同种植年限苜蓿地土壤养分的变化规律分析表明:(1)宁南黄土丘陵区苜蓿地土壤养分含量随着土层深度的增加而降低;(2)随着坡位的下降,苜蓿地0～100 cm层土壤有机质、全氮、速效氮、全磷、速效磷含量明显增加,土壤速效钾受坡位影响不大,苜蓿地土壤综合肥力指教呈下坡＞中坡＞上坡的趋势;(3)...
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| 关 键 词： | 土壤养分 苜蓿地 坡位 种植年限 土壤综合肥力指数 |
Variation of Soil Nutrients in Alfalfa Fields in Mountainous Region of South Ningxia |
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| PAN Zhan-bing; LI Sheng-bao; MA Fan; DONG Li-guo; JI Bo; WANG Yue-ling; ZHANG Yuan-run. Variation of Soil Nutrients in Alfalfa Fields in Mountainous Region of South Ningxia[J]. Acta Agriculturae Jiangxi, 2011, 23(4): 86-90 |
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| Authors: | PAN Zhan-bing LI Sheng-bao MA Fan DONG Li-guo JI Bo WANG Yue-ling ZHANG Yuan-run |
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| Affiliation: | PAN Zhan-bing; LI Sheng-bao; MA Fan; DONG Li-guo; JI Bo; WANG Yue-ling; ZHANG Yuan-run (Institute of Desertification Control; Ningxia Academy of Agricultural and Forestry Sciences; Yinchuan 750002; China); |
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| Abstract: | In order to investigate the variation of soil nutrients in alfalfa fields in the semi-arid hilly loess region of south Ningxia,this study analyzed the soil nutrients of alfalfa fields at different sloping positions and with different planting years.The results showed that:(1) In the hilly loess region of south Ningxia,the soil nutrient content of alfalfa fields reduced along with the increase of soil depth.(2) Except available K,the contents of organic matter,total N,available N,total P and available P in 0... |
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| Keywords: | Soil nutrient Alfalfa field Sloping position Planting years Comprehensive soil fertility index |
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