江汉平原稻虾共作下土壤还原性物质的累积过程与时空动态

牛鑫泽; 卢姜蒙; 李萍; 佀国涵; 刘威; 李辉; 彭成林

文章摘要

江汉平原稻虾共作下土壤还原性物质的累积过程与时空动态

Accumulation and spatiotemporal dynamics of soil reductive substances under rice-crayfish co-culture in the Jianghan Plain

Received:January 22, 2026

DOI：10.13254/j.jare.2026.0082

中文关键词: 稻虾共作，共作年限，潜育化，还原性物质，稻田土壤

英文关键词: rice-shrimp intercropping, intercropping duration, gleyzation, reductive substance, rice field soil

基金项目:湖北省重点研发项目（2024BBB092）

Author Name	Affiliation	E-mail
Niu Xinze	Institute of Plant Protection and Soil Fertilizers, Hubei Academy of Agricultural Sciences/National Agricultural Experimental Hongshan Station for Soil Quality, Wuhan 430064, China College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
Lu Jiangmeng	Institute of Plant Protection and Soil Fertilizers, Hubei Academy of Agricultural Sciences/National Agricultural Experimental Hongshan Station for Soil Quality, Wuhan 430064, China College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
Li Ping	College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
Si Guohan	Institute of Plant Protection and Soil Fertilizers, Hubei Academy of Agricultural Sciences/National Agricultural Experimental Hongshan Station for Soil Quality, Wuhan 430064, China
Liu Wei	Institute of Plant Protection and Soil Fertilizers, Hubei Academy of Agricultural Sciences/National Agricultural Experimental Hongshan Station for Soil Quality, Wuhan 430064, China
Li Hui	Qianjiang Agro-Technology Extension Center, Qianjiang 433199, China
Peng Chenglin	Institute of Plant Protection and Soil Fertilizers, Hubei Academy of Agricultural Sciences/National Agricultural Experimental Hongshan Station for Soil Quality, Wuhan 430064, China	chlpeng@163.com

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中文摘要:

稻虾共作模式长期淹水可能加剧土壤潜育化发生风险，为揭示稻虾共作模式下土壤还原性物质的累积过程与时空动态，本研究以江汉平原稻虾共作集中区为研究对象，选取1~10年不同种植年限的稻虾田，每个年限随机选取6块样田，并以中稻单作稻田为对照，按0~5、5~10、10~20 cm和20~30 cm采集土壤样品，分析样品中Fe（Ⅱ）、Mn（Ⅱ）、活性还原性物质含量及还原性物质总量。结果表明，随着稻虾共作年限的增加，各土层 Fe（Ⅱ）等土壤还原性物质含量总体上均表现出增加趋势。在 0~30 cm土层中，与中稻单作模式相比，稻虾共作第 1 年的 Fe（Ⅱ）、Mn（Ⅱ）、活性还原性物质含量和还原性物质总量分别增加了 40.09%、10.89%、29.89% 和 33.84%；第 5 年分别增加了 113.53%、131.97%、136.38% 和 77.51%；第 10 年分别增加了 170.19%、248.01%、262.54%和 134.58%。在 0~30 cm土层中，土壤 Fe（Ⅱ）含量（y）与稻虾共作年限（x）存在 y=0.109 5x+0.649 7（R²=0.952 7）的线性回归关系；土壤还原性物质总量（y）与共作年限（x）在0~10年内呈现y=0.248 9x+2.715 7（R²=0.825 2）的线性回归关系。此外，随着土层加深，各还原性物质含量总体呈递增趋势：0~5 cm土层的Fe（Ⅱ）、Mn（Ⅱ）、活性还原性物质含量、还原性物质总量分别为1.033 6、0.111 7、1.526 2、3.416 5 cmol·kg^-1，20~30 cm土层则分别上升至1.312 5、0.162 0、1.888 7、4.421 1 cmol·kg^-1。稻虾共作可导致土壤还原性物质积累，Fe（Ⅱ）、Mn（Ⅱ）、活性还原性物质含量及还原性物质总量总体表现出随年限增加而升高，随土层加深而增加的时间和空间变化特征。

英文摘要:

Long-term flooding under the rice-crayfish co-culture system may increase the risk of soil gleying. To reveal the accumulation process and spatiotemporal dynamics of soil reducing substances under the rice-crayfish co-culture system. Using the core rice-crayfish co-culture area of the Jianghan Plain as the study area, paddy fields with rice-crayfish co-culture histories ranging from 1 to 10 years were selected. Six field plots were randomly chosen for each cultivation duration, and middle-season rice monoculture paddy fields were used as the control. Soil samples were collected from the 0-5, 5-10, 10-20 cm and 20-30 cm layers, and the contents of Fe（Ⅱ）, Mn（Ⅱ）, active reducing substances, and total reducing substances were determined. With increasing years of rice-crayfish co-culture, the contents of Fe（Ⅱ）and other soil reducing substances generally increased in all soil layers. In the 0-30 cm soil layer, compared with the middle-season rice monoculture system, Fe（Ⅱ）, Mn（Ⅱ）, active reducing substances, and total reducing substances in the first year of rice-crayfish co-culture increased by 40.09%, 10.89%, 29.89%, and 33.84%, respectively; in the fifth year, they increased by 113.53%, 131.97%, 136.38%, and 77.51%, respectively; and in the tenth year, they increased by 170.19%, 248.01%, 262.54%, and 134.58%, respectively. In the 0-30 cm soil layer, soil Fe（Ⅱ）content（y）showed a linear regression relationship with the years of rice-crayfish co-culture（x）：y=0.109 5x+0.649 7（R²=0.952 7）. The total amount of soil reducing substances（y）also showed a linear regression relationship with co-culture years（x）within 0-10 years：y=0.248 9x+2.715 7（R²=0.825 2）. In addition, with increasing soil depth, the contents of all reducing substances generally increased. The contents of Fe（Ⅱ）, Mn（Ⅱ）, active reducing substances, and total reducing substances were 1.033 6, 0.111 7, 1.526 2, and 3.416 5 cmol·kg^-1, respectively, in the 0-5 cm layer, and increased to 1.312 5, 0.162 0, 1.888 7, and 4.421 1 cmol·kg^-1, respectively, in the 20-30 cm layer. Rice-crayfish co-culture leads to the accumulation of soil reducing substances. The contents of Fe（Ⅱ）, Mn（Ⅱ）, active reducing substances, and total reducing substances generally increased with co-culture duration and with soil depth, showing clear temporal and spatial variation patterns.

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