文献类型： 外文期刊
作者： Zhang, Jing 1 ; Li, Faqiao 1 ; Liao, Peizuo 1 ; Khan, Aziz 1 ; Hussain, Izhar 3 ; Iqbal, Anas 1 ; Ali, Izhar 1 ; Wei, Ben 1 ;
作者机构： 1.Guangxi Univ, Key Lab Crop Cultivat & Farming Syst, Coll Agr, Nanning, Peoples R China
2.Guangxi Acad Agr Sci, Commercial Crop Res Inst, Nanning, Peoples R China
3.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou, Guangdong, Peoples R China
关键词： Rice (Oryza sativa); Smash-ridging tillage; Soil quality; Roots traits; Grain yield
期刊名称：SAUDI JOURNAL OF BIOLOGICAL SCIENCES （ 影响因子：4.219； 五年影响因子：4.432 ）
ISSN： 1319-562X
年卷期： 2021 年 28 卷 2 期
页码：
收录情况： SCI
摘要： The practice of smash-ridging on dry land crop cultivation has shown much promise. However, the mechanism how does soil functionality and root traits can affect rice yield under smash ridge tillage with reduced nitrogen fertilization have not yet been explored. To fill this knowledge gap, we used three tillage methods-smash-ridging 40 cm (S40), smash-ridging 20 cm (S20), and traditional turn-over plowing 20 cm (T)-and two rice varieties (hybrid rice and conventional rice) and measured soil quality, root traits, rice yield and their correlation analysis at different growth stages. Soil physical and chemical properties were significantly improved by smash-ridging, including improvements in root morphological and physiological traits during three growth stages compared with T. S40 had the highest leaf area index (LAI), plant height (PH), and biomass accumulation (BA). Increment in biomass and panicle number (PN) resulted in higher grain yield (GY) of 6.9-9.4% compared with T. Correlation analysis revealed that root total absorption area (RTAA), root active absorption area (RAA), and root area ratio (RAR) were strongly correlated with soil quality. Root injury flow (RIF) and root biomass accumulation (RBA) were strongly correlated with LAI and above-ground plant biomass accumulation (AGBA). Conclusively, S40 is a promising option for improving soil quality, root traits, and consequently GY. (C) 2020 The Authors. Published by Elsevier B.V. on behalf of King Saud University.
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