吉林农业大学学报2024，Vol.46Issue(5)：731-739,9.DOI:10.13327/j.jjlau.2021.1111
玉米秸秆深翻还田对土壤及其团聚体内有机碳含量和化学组成的影响
Effects of Maize Straw Returning with Deep Plowing on Organic Car-bon Content and Chemical Composition of Soil and Its Aggregates
摘要
Abstract
Through field experiments,the effects of deep plowing of maize straw into the field on the surface(0-20 cm)and sub-surface(20-40 cm)soil and the organic carbon content and chemical composition of soil aggregates were studied.The results showed that,in both surface and subsurface soils,compared with the control treatment without returning maize straw,the proportion of>2 mm water-stable macroaggregates significantly increased after straw deep plowing and returning,while the proportion of water-stable micro-aggregates of 0.25-0.053 mm decreased significantly,making the mean weight diameter of the water-stable aggregates significantly increased.The content of or-ganic carbon,particulate organic carbon,humic acid carbon and humin carbon in soil,and the ratio of humic acid carbon to fulvic acid carbon were significantly increased,and the water-soluble or-ganic carbon content also showed an increasing trend;in the water-stable aggregates of different sizes,the content of organic carbon,water-soluble organic carbon and humus carbon also increased significantly or showed an increasing trend;from the chemical composition of soil organic carbon,in the>2 mm water-stable macroaggregates of soil,the alkyl carbon tended to decrease and the o-alkyl carbon tended to increase,so that the ratio of alkyl carbon to o-alkyl carbon tended to de-crease.The above results indicate that maize straw returning with deep plowing can not only increase the organic carbon content of surface and subsurface soil,but also help improve soil humification and soil structure.Therefore,it is an effective measure to improve soil carbon sequestration capacity and fertility quality.关键词
玉米/秸秆还田/土壤团聚体/有机碳/腐殖质/化学组成/核磁共振Key words
corn/straw returning/soil aggregate/organic carbon/humus/chemical composition/nuclear magnetic resonance分类
农业科技引用本文复制引用
张姝,袁宇含,苑佰飞,段燕,张晋京..玉米秸秆深翻还田对土壤及其团聚体内有机碳含量和化学组成的影响[J].吉林农业大学学报,2024,46(5):731-739,9.基金项目
吉林省科技发展计划项目(20240101039JC),中央引导地方科技发展资金吉林省基础研究专项(202002013JC) （20240101039JC）
