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Long-term non-flooded cultivation with straw return maintains rice yield by increasing soil pH and soil quality in acidic soil

文献类型： 外文期刊

作者： Zhou, Jingjie 1 ; Tang, Sheng 2 ; Pan, Wankun 2 ; Liu, Xiu 2 ; Han, Kefeng 2 ; Si, Linlin 3 ; Ma, Qingxu 2 ; Mao, Xiali 2 ; Fu, Haoran 2 ; Wu, Lianghuan 2 ;

作者机构： 1.China Natl Rice Res Inst, Innovat Ctr Saline Alkali Land Comprehens Utilizat, Hangzhou 310006, Peoples R China

2.Zhejiang Univ, Coll Environm & Resource Sci, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Environm Resource & Soil Fertilizer, Hangzhou 310021, Peoples R China

关键词： Long-term experiment; Non-flooded cultivation; Straw return; Rice yield; Soil quality

期刊名称：EUROPEAN JOURNAL OF AGRONOMY （ 影响因子：4.5； 五年影响因子：5.0 ）

ISSN： 1161-0301

年卷期： 2024 年 159 卷

页码：

收录情况： SCI

摘要： Non -flooded cultivation is a potentially water -saving practice for rice production. However, the response of rice yield and soil quality to long-term non -flooded cultivation and straw return on acidic soils have not been comprehensively revealed. The long-term effects were assessed by a 20 -year field experiment that with water regimes (traditional flooded and non -flooded cultivation) as main plots and straw managements (straw return and no straw return) as sub -plots. Compared with traditional flooded cultivation, non -flooded cultivation maintained soil quality, rice yield, and yield sustainability and presented higher water productivity. Straw return management significantly increased the 20 -year averaged rice yield by 4.4% under traditional flooded cultivation and 5.4% under non -flooded cultivation compared to no straw return management. Soil pH was the most correlated factor that affected rice yield and was correlated positively with rice yield (R2 = 0.11, p = 0.001). Non -flooded cultivation increased soil pH by 2.0% and Olsen -P by 26.9% and decreased soil total N by 7.7% and NH4OAc-exchangeable K by 11.1% compared with that of traditional flooded cultivation. Compared to no straw return management, straw return management increased soil total N, Olsen -P, and NH4OAc-exchangeable K by 10.0%, 16.5%, and 19.9%, respectively. Overall, straw management under non -flooded cultivation achieved the highest soil quality index and was correlated positively with rice yield (R2 = 0.53, p = 0.007). Therefore, nonflooded cultivation combined with straw return management is a sustainable agricultural strategy for conserving irrigation water and maintaining crop yields and soil quality.

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