期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：315
期号：5
页码：1-6
DOI：10.1088/1755-1315/315/5/052064
出版社：IOP Publishing
摘要：The long-term stationary experiment (1981-2011) on meadow-Chernozem soil has shown that the systematic application of mineral fertilizers and straw, the inclusion of perennial legumes in the crop rotation stabilizes the humus content and increases the supply of labile organic matter in the soil. The humus content in the fertilized variants increased by 0.16-0.30 %, and the content of easily mineralized organic matter by 24-86%. High correlation dependence (r=81) of humus content on mortmass reserves in soil confirms the significant role of labile organic matter in soil fertility preservation.
