Pedosphere 32(4): 637--648, 2022
ISSN 1002-0160/CN 32-1315/P
©2022 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Effects of long-term fertilization with different substitution ratios of organic fertilizer on paddy soil
Weifeng SONG1,2, Aiping SHU3, Jiai LIU1,2, Wenchong SHI1,2, Mingcong LI1,2, Wenxue ZHANG3, Zuzhang LI3, Guangrong LIU3, Fusheng YUAN3, Shuxin ZHANG1,2, Zengbing LIU3, Zheng GAO1,2
1State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an (China)
2College of Life Sciences, Shandong Agricultural University, Tai'an (China)
3Institute of Soil and Fertilizer & Resource and Environment/National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, 330200 (China)
      In recent years, the abuse of chemical fertilizers has caused numerous environmental problems, such as soil acidification and compaction. Replacing chemical fertilizers with organic fertilizers can effectively alleviate these problems. However, the effects of alternative organic fertilizers remain unclear. To explore the effects of organic fertilizer substitution on rice yield and paddy soil physicochemical properties and bacterial community structure, we conducted a 5-year experiment using different proportions of organic fertilizer substitution in a double-cropping rice field in Jiangxi, China. Our results showed that replacing chemical fertilizers with organic fertilizers can reduce soil acidification, increase soil organic matter content, nutrient contents, and enzyme activities, improve soil physicochemical properties and microbial community, and enhance soil metabolism. Appropriate organic substitution also had positive effects on rice production. These findings enhance our understanding of the effects of different alternative organic fertilization methods and have important theoretical significance for the promotion of the use of organic fertilizers in the future.
Key Words:  bacterial community,double-cropping rice,organic matter,rice yield,soil acidification, soil property
Citation: Song W F, Shu A P, Liu J A, Shi W C, Li M C, Zhang W X, Li Z Z, Liu G R, Yuan F S, Zhang S X, Liu Z B, Gao Z. 2022. Effects of long-term fertilization with different substitution ratios of organic fertilizer on paddy soil. Pedosphere. 32(4): 637-648.
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