摘要
通过对山西省主要土壤耕层硫含量，形态分组的分析测定，结果表明：山西省土壤硫的平均含量为１８μｇ／ｇ，属中下水平，有效硫为１５．１μｇ／ｇ，有效硫／全硫量为８．４％。有效硫的缺硫临界值为１２μｇ／ｇ，施用硫肥油菜可增产１６．８％。
According to soil analytical data and pot experiment results obtained are as fallow. 1. In Shanxi province the mean content of total S of major soils is 185μg/g.2. The mean content of available S of major soils is 15. 1μg/g.3. Experiment result show that available S critical limit of deficiency S soil is 12μg/g.4. The optimal S application rate of rape around is 2. 25kg/mu.5. Under mid-N condition, S application increased the yield of rape ranging between 12. 5 ～ 16. 8 %.6. Due to S nutrient balance disturbance 12μg/g, land block yellow lorseal soil occupy most, in turn chestnut-cinnamon and cinnamon soil.
