中国农业科技导报2025，Vol.27Issue(6)：195-204,10.DOI:10.13304/j.nykjdb.2024.0007
生物炭-氮肥配施对东北黑土团聚体及有机碳含量的影响
Effects of Combined Application of Biochar and Nitrogen Fertilizer on Aggregate and Organic Carbon Content of Black Soil in Northeast China
摘要
Abstract
In order to improve soil structure and enhance soil fertility in the black soil area,the long-term positioning experiment in the black soil area was used as the research platform to study the effects of the combination of biochar and nitrogen fertilizer on soil aggregate and organic carbon content,and to explore the maximum influencing factors.3 biochar levels of 10(C1),20(C2)and 50 g·kg-1(C3)were set,and 3 nitrogen fertilizer levels of 0(N0),300(N1)and 600 kg·hm-2(N2)were set.The results showed,compared with CK,the soil bulk density decreased by 2.73%～8.20%,and the soil water content increased by 1.04%～31.24%,with no significant difference among all treatments.The combination application of biochar and nitrogen promoted the transformation of<0.053 mm aggregate to≥2 mm aggregate.The aggregate stability was significantly improved,and the aggregate mass ratio(R0.25),mean weight diameter(MWD)and geometric mean diameter(GMD)of soil≥0.25 mm increased by 25.06%,21.71%and 12.50%,respectively.The organic carbon content of all grain grades of aggregates increased,and the organic carbon content of aggregates≥2 mm and<0.053 mm increased significantly,with the increases of 13.19%～54.42%and 13.78%～41.34%,respectively.Principal component analysis(PCA)showed that R0.25 was the key factor affecting soil organic carbon content,and C2N1 treatment was the best application measure to improve the structure of black soil.Above research results provided a theoretical basis for curbing the degradation of black soil in northeast China and improving soil fertility.关键词
生物炭/氮肥/黑土/团聚体/有机碳含量Key words
biochar/nitrogen fertilizer/black soil/aggregate/organic carbon content分类
农业科技引用本文复制引用
庆福,梁洪月,孙静,鲁新蕊,梁运江..生物炭-氮肥配施对东北黑土团聚体及有机碳含量的影响[J].中国农业科技导报,2025,27(6):195-204,10.基金项目
中国科学院战略先导科技项目(1138111125). （1138111125）
