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• W2916968879 endingPage "833" @default.
• W2916968879 startingPage "823" @default.
• W2916968879 abstract "For the soil-plant ecosystem, knowledge about the effects of biochars on the soil silicon (Si) cycle is still tenuous. In this study, the effect of biochars on the yield, Si uptake and Si distribution within different tissues of rice plants and the soil Si cycles in a soil-plant system were investigated. Si-rich (RH300-700) and Si-deficient (WB300-700) biochars prepared from rice husk and wood sawdust were applied to high-Si soil (HSS) and low-Si soil (LSS). Biochar addition increased the yield of grain and straw and had no effect on the yield of root, and the increase in the yield with Si-rich biochars was obvious; this effect had a high response to LSS. Si-rich biochars increased the plant Si content of grain and root and had no effect on straw. RH300 amendment increased the Si concentration in grains, compared to RH500 and RH700. The addition of Si-deficient biochar to HSS had little effect on the Si content, while Si-deficient biochar-amended LSS had a great impact on the reduced Si content in rice straw and root, and WB700 decreased the Si concentration in grains, compared to WB300 and WB500. Finally, the Si-rich biochars increased the total Si uptake within rice, while Si-deficient biochars decreased the total Si uptake in LSS. According to the FTIR and SEM-EDX spectra of biochars before and after rice harvest, a new band of SiOSi at 471 cm-1 was found after aged WB700, and the minerals of iron and Si were found on the surface of aged WB700; biochars can fix the dissolved Si on its surface as a temporary store to prevent Si loss. Therefore, biochars can be considered reservoirs of soil Si, which is a slow release source of available Si, to impact the speed of biogeochemical cycling of soil Si in agricultural paddy soil." @default.
• W2916968879 created "2019-03-02" @default.
• W2916968879 creator A5030916575 @default.
• W2916968879 creator A5035965413 @default.
• W2916968879 creator A5051336184 @default.
• W2916968879 creator A5090741037 @default.
• W2916968879 date "2019-05-01" @default.
• W2916968879 modified "2023-10-17" @default.
• W2916968879 title "Effects of biochar amendment on the soil silicon cycle in a soil-rice ecosystem" @default.
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• W2916968879 doi "https://doi.org/10.1016/j.envpol.2019.02.072" @default.
• W2916968879 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30856498" @default.
• W2916968879 hasPublicationYear "2019" @default.
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