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研究在石灰性烂田中冬种紫云英对土壤酶活性的效应．结果表明：石灰性烂田冬种紫云英能显著地增加土壤有机质和土壤氮、磷含量，对土壤脲酶、蛋白酶、转化酶活性的提高也有显著的效果．为改造该类低产田提供新的理论依据．
To study the effect of winter wheat (Astragalus sinicus) on soil enzyme activities in the calcareous soil. The results showed that the winter wheat germination of Astragalus sinicus could significantly increase the content of nitrogen and phosphorus in soil organic matter and soil, and also had a significant effect on the increase of soil urease, protease and invertase activity. Provide a new theoretical basis for transforming such low-yielding fields.