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本研究以嘉善县陶庄农场内一块5.1hm2的水稻田为研究区,区内不规则采样,共128个采样点。以土壤的pH、有机质、全磷、全氮、碱解氮、速效钾和速效磷含量为研究对象,研究其相应的统计规律,结果表明土壤各养分属性的变异系数在6.3%~35.61%之间,pH为5.3%;采用地统计的半方差函数分析,发现有机质,全氮,碱解氮和速效钾在一定范围内存在空间相关性;采用克立格方法进行最优内插,绘制了养分含量分布图,并对其空间变异进行了初步分析。
In this study, a 5.1hm2 paddy field in Taozhuang Farm of Jiashan County was taken as the research area, with irregular sampling of 128 sampling points in the area. The statistical laws of soil pH, organic matter, total phosphorus, total nitrogen, available nitrogen, available potassium and available phosphorus were studied. The results showed that the coefficients of variation of soil nutrients ranged from 6.3% to 35.61% The results showed that there was spatial correlation among organic matter, total nitrogen, available nitrogen and available potassium in a certain range by using the statistical analysis of semi-variance function. The Kriging method was used to optimize the interpolation and plotted Nutrient content distribution map, and carried out a preliminary analysis of its spatial variability.