洛阳市植烟土壤养分状况分析

分析了洛阳市植烟土壤346个土壤样品的养分状况。结果表明,该区植烟土壤速效氮、磷、钾和有机质的平均含量分别为44.6、10.2、147.9 mg/kg和12.2 g/kg,总体上处于中等含量水平,78.0%的土壤速效氮含量在30~60 mg/kg之间,87.0%的速效磷含量在5~20 mg/kg之间,74.6%的速效钾含量在100~200mg/kg之间,69.4%的有机质含量在10~15 g/kg之间,各养分的变异程度大小顺序为速效磷>速效氮>速效钾>有机质。土壤速效钾含量分布经K-S检验(P>0.05)符合正态分布;土壤有机质和速效氮、磷的含量分布接近正态分布,经K-S检验均未达到显著水平(P<0.05)。

Analysis of the Nutrient Status of Tobacco-growing Soils in Luoyang

Three hundred and forty-six soil samples selected from Luoyang tobacco-growing areas were determined.The results showed that the average contents of the available nitrogen,phosphorus and potassium,and the organic matter were 44.6,10.2,147.9 mg/kg,and 12.2 g/kg,respectively.As a whole,they were medium level,in which,78.0% of available N ranged from 30 mg/kg to 60 mg/kg,87.0 % of available P from 5 mg/kg to 20 mg/kg,74.6% of available K from 100 mg/kg to 200 mg/kg,and 69.4% of organic matter from 10 g/kg to 15 g/kg.The order of coefficient of variation(CV) was available P>available N>available K>organic matter.Frequency distribution of available K content was normal with Kolmogorov-Smirnov Test.Frequency distribution of the contents of organic matter and available N and available P were approximate normal with no significant level tested by K-S.