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当前位置: 首页 > 文章 > 海南水稻土养分时空变异特征 土壤通报 2009 (6) 1292-1296
Position: Home > Articles > Spatial-temporal Variability of Paddy Soil Nutrient in Hainan Province Chinese Journal of Soil Science 2009 (6) 1292-1296

海南水稻土养分时空变异特征

作  者：
漆智平;魏志远;李福燕;唐树梅
单  位：
中国热带农业科学院;海南大学农学院
关键词：
水稻土;土壤养分;时空变异
摘  要：
为指导海南水稻田的合理施肥、缓解农业非点源污染,保证人类健康和农业的可持续发展提供理论依据,采集了海南省具有代表性的土壤样品300多个,参照海南第二次土壤普查和近年测土配方施肥项目分析数据,以土壤有机质、速效磷、速效钾含量变化为依据,分析了20多年来海南水稻土养分的时空变异特征。研究结果表明:海南水稻土的速效磷、速效钾含量总体上比20年前有了较大程度的提高,而大部分地区的土壤有机质都有不同程度的下降。全省范围普遍存在重化肥轻有机肥问题,部分地区存在着速效磷、速效钾等养分过剩的问题。不同区域水稻土养分含量变化的幅度和趋势不尽相同,说明各区域的施肥习惯和土壤管理水平有着比较大的差异。
译  名：
Spatial-temporal Variability of Paddy Soil Nutrient in Hainan Province
作  者：
QI Zhi-ping1,WEI Zhi-yuan1,LI Fu-yan1,TANG Shu-mei2*(1.Tropical Crops Genetic Resources Institute,CATAS,Danzhou Hainan 571737,China;2.College of Agronomy Hainan University,Danzhou Hainan 571737,China.)
关键词：
Paddy soil;Soil nutrient;Spatial-temporal Variability
摘  要：
In order to provide a theoretical basis for the reasonable fertilization in paddy soil of Hainan,and mitigate agricultural non-point source pollution,and ensure human health and the sustainable agriculture development,the characteristics of the spatial-temporal variability of nutrients in paddy soil for last 21 years had been analyzed on the basis of the contents of organic matter,available phosphorous,and available potassium,collecting 300 representative paddy soil samples in 2004 and comparing with the 706 paddy soil samples of The Second Soil Survey of Hainan province.The results indicated that the content of available phosphorous and potassium were higher than those of the 21years ago,and the organic matter of the paddy soil was decreased.It was widespread in Hainan that the farmer preferred to use chemical fertilizers rather than organic manure,which leading to the plethora of available phosphorous and potassium in some areas.The changing scope and tendency of nutrient contents had great varieties between different regions.It suggested that the fertilization practice and soil management methods in different areas were greatly discrepant.

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