| 河北省主要土壤2次普查钾素养分状况变化分析 |
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| 引用本文： | 韩宝文,贾良良,李春杰,邢素丽,刘孟朝.河北省主要土壤2次普查钾素养分状况变化分析[J].河北农业科学,2009,13(12):25-28. |
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| 作者姓名： | 韩宝文 贾良良 李春杰 邢素丽 刘孟朝 |
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| 作者单位： | 河北省农林科学院农业资源环境研究所,河北,石家庄,050051 |
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| 基金项目： | 沃土工程关键支撑技术研究项目，国家科技支撑计划2007BAD87B02，国际植物营养研究所 |
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| 摘 要： | 通过调查数据对比,评价了2次普查的河北省主要土壤钾素养分状况,并对河北土壤钾素养分的变化原因进行了初步分析。结果表明：河北省主要土壤钾素养分状况呈下降趋势,与＂第2次土壤普查＂时的数据相比,有效钾平均值下降了约33 mg/kg,下降率24.5%,缺钾的耕地面积也在增加。认为土壤钾素下降的可能原因是：作物产量提高使钾素移出土壤数量迅速增加,以及钾肥施肥不足和秸秆没有充分还田等。
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| 关 键 词： | 河北省 钾素 变化 土壤 养分平衡 |
Analysis on the Change of Potassium Nutrient in Soil Based on Two Soil Surveys in Hebei Province |
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| HAN Bao-wen,JIA Liang-liang,LI Chun-jie,XING Su-li,LIU Meng-chao.Analysis on the Change of Potassium Nutrient in Soil Based on Two Soil Surveys in Hebei Province[J].Journal of Hebei Agricultural Sciences,2009,13(12):25-28. |
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| Authors: | HAN Bao-wen JIA Liang-liang LI Chun-jie XING Su-li LIU Meng-chao |
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| Institution: | (Institute of Agricultural Resources and Environment, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China) |
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| Abstract: | The status of potassium nutrient in the second soil survey in Hebei Province was evaluated by comparing the data of two soil surveys.The reasons of the change of potassium nutrient in soil were analyzed.The results showed that the main potassium nutrient decreased.The average content of available potassium decreased by about 33 mg/kg,the decrease rate was 24.5%,and the cultivated area with potassium deficiency increased.The possible reasons were that the increasing of crops yield led to more potassium remove from soil, potassium fertilizer application was insufficient and straw did not fully return to farmland. |
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| Keywords: | Hebei Province Potassium Change Soil Nutrient balance |
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