Research Papers

Effect of Aeration Treatment on Soil Microbial Biomass Carbon, Nitrogen and Enzyme Activities in Paddy Field

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  • 1State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311401, China
    2Engineering Center of Wetland Ecology and Agricultural Utilization, Ministry of Education, School of Agriculture, Yangtze University, Jingzhou 434025, China
    3Agricultural Science Research Institute, Fourth Division of Xinjiang Production and Construction Corps, Xinjiang 831304, China

Received date: 2021-11-11

  Revised date: 2022-02-14

  Online published: 2022-07-12

Abstract

【Objective】 It is of great importance to elucidate the effects of different aeration methods on soil microbial biomass carbon, nitrogen and soil enzyme activities in paddy fields, 【Method】 Using Zhonghan 221 (upland rice), Zhongzheyou 8 (rice) and IR45765-3B (deepwater rice) as materials, the effects of the micro-nano bubble water aeration irrigation (MBWI), dry-wet alternate irrigation (AWD) and flooding irrigation (WL) on soil microbial biomass carbon, nitrogen in paddy soil, nitrogen metabplic intensity and activities of enzymes related to nitrogen transfomation were studied. 【Result】 Soil microbial biomass C and N could be significantly increased by micro-bubble aeration irrigation and dry-wet alternate irrigation. The soil microbial biomass C and N increased by 30.0%~46.1% and 7.1%~92.1% in Zhonghan 221, Zhongzheyou 8 and IR45765-3B, respectively. The activities of urease, sucrase, catalase, protease and hydroxylamine reductase in paddy soil were increased by micro-nano bubble water aeration irrigation and dry-wet alternate irrigation compared with flooding irrigation, the nitrate reductase activity and nitrite reductase activity were reduced. 【Conclusion】 Micro-nano bubble water aerobic irrigation and dry-wet alternate irrigation can improve the oxidation characteristics of paddy soil, increase soil enzyme activities, microbial biomass carbon, nitrogen and nitrification intensity, and contribute to the improvement of soil environment and fertility, strike a balance between C and N metabolism.

Cite this article

ZHANG Lu, WU Longlong, HUANG Jing, TIAN Cang, QI Jun, ZHANG Junhua, CAO Xiaochuang, ZHU Chunquan, KONG Yali, JIN Qianyu, ZHU Lianfeng . Effect of Aeration Treatment on Soil Microbial Biomass Carbon, Nitrogen and Enzyme Activities in Paddy Field[J]. Chinese Journal OF Rice Science, 2022 , 36(4) : 410 -418 . DOI: 10.16819/j.1001-7216.2022.211107

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