| Title | Organic amendment regulates soil microbial biomass and activity in wheat-maize and wheat-soybean rotation systems |
| Publication Type | Journal Article |
| Year of Publication | 2022 |
| Authors | Song D.L, Dai X.L, Guo T.F, Cui J.W, Zhou W., Huang S.M, Shen J.B, Liang G.Q, He P., Wang X.B, Zhang S.Q |
| Journal | Agriculture, Ecosystems & Environment |
| Volume | 333 |
| Pagination | 13 |
| Date Published | Aug |
| Type of Article | Article |
| ISBN Number | 0167-8809 |
| Accession Number | WOS:000797935200004 |
| Keywords | Agriculture, carbon, Community structure, Crop rotation, Environmental Sciences & Ecology, Enzyme kinetics, enzyme-activities, functional diversity, long-term fertilization, management, Microbial activity and function, microbial biomass, MicroResp, nitrogen, Organic substitution, p fertilization, rice, stoichiometric constraints, YIELD |
| Abstract | Long-term heavy application of inorganic fertilizers is associated with a decrease in soil quality and biodiversity. Organic amendments have been reported to positively affect soil quality; however, relatively little is known regarding soil carbon (C) cycle enzyme kinetic parameters (Vmax and Km), community-level physiological profiles (CLPP), and the interactions between these factors and soil microbes and physicochemical properties under sustained organic amendment. Therefore, this study aimed to evaluate the effect of organic amendments on crop yield, soil chemical properties, microbial activity, enzyme kinetic parameters of five extracellular C cycle-related hydrolase enzymes, and soil microbial functional diversity in wheat-maize (WM) and wheat-soybean (WS) rotation crop systems. The results of the study showed that combined application of organic and inorganic fertilizers increased crop yield (6.81-17.47%), soil total organic C (TOC, 29.44-39.54%), total nitrogen (TN, 24.22-50.79%), available potassium (AK, 39.47-59.62%), total dissolved nitrogen (TDN, 19.68-33.75%), dissolved organic C (DOC, 14.54-55.10%), available phosphorus (AP, 34.81-243.90%), and microbial biomass C and nitrogen (MBC, 17.65-40.86% and MBN, 18.63-50.76%) concentration. The combined application also enhanced microbial growth when compared with an inorganic amendments regime. Additionally, the combined application of organic and inorganic fertilizers increased soil microbial activity and catabolic diversity and maintained a high substrate-induced respiration (SIR) value. Furthermore, the conversion from a WM rotation to a WS rotation increased both soil pH and microbial biomass, and the resultant soil exhibited lower potential activity and higher enzyme-substrate affinity. Overall, the findings of this study showed that an increase in soil microbial biomass is a key determinant of microbial catabolic activity and functional diversity.
|
| Short Title | Agric. Ecosyst. Environ.Agric. Ecosyst. Environ. |
| Alternate Journal | Agric. Ecosyst. Environ. |
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Times Cited: 0
Cited Reference Count: 91
Song, Dali Dai, Xianglin Guo, Tengfei Cui, Jiwen Zhou, Wei Huang, Shaomin Shen, Jianbo Liang, Guoqing He, Ping Wang, Xiubin Zhang, Shuiqing
Innovation Project of Chinese Academy of Agricultural Sciences [Y2020CG04]; National Key Research and Development Program [2016YFD0200109]
Acknowledgments This work was supported by the Innovation Project of Chinese Academy of Agricultural Sciences (No. Y2020CG04) and National Key Research and Development Program (No. 2016YFD0200109) . We thank Elsevier (https://webshop.elsevier.com /) for editing the English text of a draft of this manuscript. We thank Chao Ai, Xinpeng Xu, Wencheng Ding, Yunke Yao and Lu Chen for their help in laboratory work and data analysis. Additionally, we would like to thank the two anonymous re-viewers and the editor for their constructive comments and suggestions.
Elsevier
Amsterdam
1873-2305
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Zhou, W (corresponding author), Chinese Acad Agr Sci, Inst Agr Resource & Reg Planning, Minist Agr Key Lab Plant Nutr & Fertilizer, Beijing 100081, Peoples R China.; Huang, SM (corresponding author), Henan Acad Agr Sci, Inst Plant Nutr & Environm Resources Sci, Zhengzhou 450002, Peoples R China.
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