烟草科技2019，Vol.52Issue(4)：9-16,8.
绿肥、稻草还田对植烟土壤团聚体组成及有机质分布的影响
Effects of green manure and rice straw returning on composition and organic matter percentage of aggregates in tobacco-planting soils
摘要
Abstract
To clarify the influences of green manure and rice straw returning on the composition and organic matter percentage of aggregates in tobacco-planting soils, field experiments were carried out in typical tobacco-planting areas of Hunan from 2015 to 2017. The results showed that comparing with the soils applied chemical fertilizer only (CK), the organic matter contents in soils applied with rice straw, rapes, arrow peas and ryegrass increased by 2.80% , 3.24% , 0.84% and 0.48% , respectively. Green manure and rice straw returning improved soil aggregate characteristics, increased the content, mean weight diameter (MWD) and geometric mean diameter (GMD) of large aggregates, and reduced their fractal dimension (D). Viewing from soil aggregate characteristics, the effects of rape returning and ryegrass returning were superior to rice straw returning and arrow pea returning, respectively. In addition, green manure and rice straw returning influenced the organic matter percentage in aggregates of different sizes, and organic matter presented a transfer trend from small aggregates to large aggregates. Their influences on the organic matter percentage in aggregates larger than 2.000 mm were greater, and the percentage increased by 24.51%, 30.00%, 14.29%, and 39.48% after rice straw, rapes, arrow peas and ryegrass returning, respectively. Therefore, green manure and rice straw returning could effectively improve tobacco-planting soils.关键词
植烟土壤/团聚体/绿肥/稻草/有机质Key words
Tobacco-planting soil/Aggregate/Green manure/Rice straw/Organic matter分类
农业科技引用本文复制引用
严红星,田飞,刘建国,刘勇军,彭曙光,靳志丽,罗建新..绿肥、稻草还田对植烟土壤团聚体组成及有机质分布的影响[J].烟草科技,2019,52(4):9-16,8.基金项目
云南中烟工业有限责任公司科技项目"以增加用户体验感为导向的多功能电子烟产品设计与开发"(2016XY01) （2016XY01）
云南省科技厅项目"烟草材料在加热非燃烧状态下烟气释放特征研究"(2017FD047). （2017FD047）
