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在证实冬种黑麦草改善土壤理化性状的同时，研究对土壤生物性状的影响，结果表明：冬种黑麦草增加了土壤酶的活性，使脲酶活性提高了２．７５倍，转化酶活性提高了９２．６％；土壤微生物生物量增加１３倍；改善了土壤的微生物区系，细菌数量增加１．２倍，放线菌数量增加３．４倍，真菌数量下降了４４％．这些生物性状的改善，对提高地力和后作水稻的生长和发育具有良好的作用．
The results showed that the ryegrass increased the activity of soil enzymes, increased the activity of urease by 2.75 times and increased the activity of invertase 92.6%. Soil microbial biomass increased 13-fold. Soil microflora was improved. The number of bacteria increased 1.2-fold, the number of actinomycetes increased 3.4-fold and the number of fungi decreased 44%. The improvement of these biological traits has a good effect on improving the fertility and the growth and development of post-made rice.