文献类型：期刊文献

英文题名：Straw biochar improves rice yield by regulating ammonia-oxidizing microorganisms and physicochemical properties of subtropical saline soils by a pot study

作者：Wu, Weilong[1];Zhen, Zhen[1];Yang, Guiqiong[1];Yang, Changhong[1];Song, Mengke[2];Li, Xiaofeng[1];Li, Qing[1];Zhong, Xiaolan[1];Yin, Junyong[1];Lin, Zhong[3,4];Zhang, Dayi[5,6]

机构：[1]Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China;[2]South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Peoples R China;[3]Guangdong Ocean Univ, Fac Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Shenzhen Res Inst, Shenzhen 518108, Peoples R China;[5]Jilin Univ, Coll New Energy & Environm, Changchun 130021, Peoples R China;[6]Shenyang Univ, Key Lab Reg Environm & Ecorestorat, Minist Educ, Shenyang 110044, Peoples R China

年份：2025

卷号：38

外文期刊名：ENVIRONMENTAL TECHNOLOGY & INNOVATION

收录：SCI-EXPANDED(收录号：WOS:001477147600001)、、EI(收录号：20251618263977)、Scopus(收录号：2-s2.0-105002774789)、WOS

基金：This work was financially supported by National Natural Science Foundation of China (41907033, 41977125) , Natural Science Foundation of Guangdong Province (2024A1515010766, 2023A1515012225, 2022A1515010867, 2022A1515010630) and Shenzhen Fundamental Research Program (JCYJ20220818103609020) . DZ acknowledges support from Chinese Government's Thousand Tal-ents Plan for Young Professionals.

语种：英文

外文关键词：Straw biochar; Saline soils; Ammonia oxidation; Nitrogen cycle; Rice yield

外文摘要：The fertility and nitrogen cycling capacities of saline soil are limited, restricting rice yield in subtropical region of South China. The process of nitrification, facilitated by ammonia-oxidizing archaea (AOA) and bacteria (AOB), plays a pivotal role in nitrogen assimilation by rice and serves as a significant determinant of rice yield. This study investigated the impact of changes in the amount of straw biochar on the yield of salinity-tolerant rice, as well as the AOA and AOB responses in saline soils. The findings indicated that biochar significantly increased rice yield and the best performance (an increase of 90.87 %) was achieved in 3 % biochar amendment (BC3). The incorporation of biochar enhanced the physicochemical characteristics of soil and markedly boosted the populations of AOA and AOB. The highest AOB frequency was found in BC3 (34.4 x 10(5) copies g(-1) soil), and the AOB gene amoA was significantly correlated with rice yield factors. Nitrosospira was enriched by biochar amendment and exhibited a significant correlation (p < 0.05) with nitrogen. PLS-SEM analysis revealed that the application of biochar enhanced rice yield through its impact on soil physicochemical characteristics and by augmenting the abundance of AOA and AOB. Our results show that 3 % biochar amendment is the best condition for improving saline soil and increasing rice yield, which provides a scientific reference for the development and utilization of saline soil.