山西农业大学农作站土壤养分变化浅析

在山西农业大学农作站采集耕层土样３７个。并对其进行养分含量的分析，与８２年相应地块土壤养分分析结果进行对比，发现农作站耕地经过十年耕作，土壤有机质，全氮、有效钾等含量都有不同程度的下降，而有效磷的含量则显著增加。为此，我们从养分平衡，肥料配比等方面进行综合分析，今后在施用化肥配比时，应注意补充一定数量的有机肥，才能持续的高产、稳产、增产、增收。

RESEARCH ON THE CHANGES OF SOIL NUTRIENTS IN THE FiELDS OF SHANXI AGR.UNI.

In the fields of shanxi Agr.Uni.,Collecting37 soil samples, analysing their nutrient contents, which was contrasted with the results of 1982 on the same fields,we found that after 10 years cultivation,the contents of soil organic matters,total nitrogen and effective potassium had in decreased at different rate,while the effective phosphorus content had increased apparently.There fore,based on the balance of soil nutrient and the quotation of different fertilizers,we had a comprehensive analysis of the reasons why the soil nutrients varied,and proposed a rational fertilizing measures in the farther years.