寿光市耕层土壤养分现状分析

为摸清寿光市耕层土壤的养分现状，调查并采取全市16个乡镇4083个土壤样品，对其进行土壤的常规分析。结果表明：全市耕层土壤养分总体含量丰富，土壤pH为7.16，碳氮比为8.43，有机质含量中等，为14.70g/kg，全氮含量较丰富，为1.24g/kg，水解氮含量丰富，为126.21mg/kg，有效磷、速效钾含量很丰富，分别为58.23、219.10mg/kg；耕层土壤养分南北地域差别明显，保护地土壤养分显著高于大田土壤；耕层土壤中变异性最大的土壤养分是有效磷，除pH外，其它养分表现为中等程度变异。

Analysis on the Topsoil Nutrients Status in Shouguang

In order to proving the topsoil nutrients status in Shouguang, 4083 topsoil samples from 16 towns were collected and analyzed routinely. The results indicated that the conventional contents of topsoil nutrients in the city were rich, while the average contents of pH, C/N, organic matter, total N, Avail-N, Olsen-P, Avail-K were 7.16, 8.43, 14.70g/kg, 1.24g/kg, 126.21mg/kg, 58.23mg/kg, 219.10mg/kg, respectively. As a whole, the content of organic matter is in medium level, total N is relatively rich, Avail-N is rich, Olsen-P and Avail-K are very rich.; The contents of topsoil nutrients showed an obvious difference between north and south in the city, and most soil nutrients in protected vegetable lands are significantly higher than those in open farm lands; Among all the topsoil nutrients, Olsen-P has maximal variance, while the others have medium variance except pH.