文山州土壤养分空间分布与变化规律
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摘要
采用GPS定位技术,对文山州基本烟田进行大规模的土壤取样,研究了区域植烟土壤养分状况的总体特征、空间变异特征,并采用普通插值法绘制了土壤养分空间分布图。结果表明:随海拔的升高,土壤pH值呈显著下降的趋势,土壤有机质和碱解氮含量呈极显著增加趋势,而土壤有效磷含量呈先增加后下降的趋势。全州土壤有机质和碱解氮含量整体呈由北向南、由东向西有增加的趋势,土壤有效钾含量整体上呈由中部向北部及南部增加的趋势,土壤pH值和有效磷空间变化趋势不显著。
Large-scale soil sampling was carried out by GPS positioning technology in basic tobacco fields of wenshan Area, and descriptive analysis characteristics and spatial variation characteristics were studied. Spatial distribution maps for soil nutrient were made with ordinary Kriging interpolation method.Results show thatwith increasing altitude, value of pH significantly decrease, but the organic matter and alkaline hydrolysis nitrogen content show a significant increasing trend. While the available potassium content shows a downward trend after the first increase. The organic matter and alkaline hydrolysis nitrogen content showed an increasing trend from north to south and from east to west, the available potassium content showed an increasing trend from central to the north and south. The value of pH and the available phosphorus have no obvious spatial variation characteristics.
Large-scale soil sampling was carried out by GPS positioning technology in basic tobacco fields of wenshan Area, and descriptive analysis characteristics and spatial variation characteristics were studied. Spatial distribution maps for soil nutrient were made with ordinary Kriging interpolation method.Results show thatwith increasing altitude, value of pH significantly decrease, but the organic matter and alkaline hydrolysis nitrogen content show a significant increasing trend. While the available potassium content shows a downward trend after the first increase. The organic matter and alkaline hydrolysis nitrogen content showed an increasing trend from north to south and from east to west, the available potassium content showed an increasing trend from central to the north and south. The value of pH and the available phosphorus have no obvious spatial variation characteristics.
引文
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[4]张春,周冀衡,杨荣生,等.云南曲靖不同海拔烟区土壤和烟叶硼含量的分布状况及相关性[J].中国烟草学报,2010,16(6):48-53.
[5]Xue F C,Bian Z F.GIS COMBINED WITH MCE TO EVALUATE LAND QUALITY[A].Computer and Computing Technologies in Agriculture—Proceedings of First IFIP TC 12 International Conference(CCTA2007)[C].2007.
[6]Yang Y,Zhang S.Approach of developing spatial distribution maps of soil nutrients[A].Computer and Computing Technologies in Agriculture—Proceedings of First IFIP TC 12 International Conference(CCTA2007)[C].2007.
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[8]唐杰,王昌全,李启权,等.川北植烟土壤有机质和全氮空间变异研究[J].中国烟草学报,2014,20(5):66-72.
[9]陈海生,王世界,赵玉明.豫中植烟区土壤速效养分的空间变异分析[J].水土保持研究,2014,41(3):78-81.
[10]刘建利,李志宏,陈江华,等.GIS应用于植烟土壤肥力分区及施肥区划的研究[J].中国烟草学报,2004,10(3):23-28.
[11]李强,周冀衡,杨荣生,等.GIS支持下的马龙县植烟土壤有效态微量元素评价[J].中国烟草学报,2011,17(4):56-57.