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本文通过对辽宁省大豆主要产区(8个县)土壤全硫及有效硫含量进行测定与分析,阐述了不同类型、不同肥力土壤硫素状况。在不同地区开展的硫肥肥效试验结果表明,在有效硫含量很低的土壤上施用硫肥增产效果都很明显,而有效硫含量较高的土壤上施用硫铵增产效果较好,石膏和硫磺的增产效果不稳。
In this paper, the total sulfur and available sulfur in soils of the main soybean producing areas of Liaoning Province (8 counties) were measured and analyzed, and the status of sulfur in different types and fertility soils was expounded. The result of sulfur fertilization experiment in different areas shows that sulfur fertilizer application efficiency is very obvious in the soil with very low effective sulfur content. However, the application of ammonium sulfate in the soil with higher available sulfur content has a good effect, and the effect of gypsum and sulfur The yield increase is not stable.