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150 results on '"Huang, Daoyou"'

26. CF1 reduces grain‐cadmium levels in rice (Oryza sativa)

Author

Li, Lanying, primary, Mao, Donghai, additional, Sun, Liang, additional, Wang, Ruigang, additional, Tan, Longtao, additional, Zhu, Yuxing, additional, Huang, Han, additional, Peng, Can, additional, Zhao, Yaping, additional, Wang, Jiurong, additional, Huang, Daoyou, additional, and Chen, Caiyan, additional

Published
2022
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34. Effect of biochar from peanut shell on speciation and availability of lead and zinc in an acidic paddy soil

Author

Zhang Yang-zhu, Huang DaoYou, Xu Chao, Xiang Qian, Zhu Hanhua, Wang Shuai, and Zhu Qi-hong

Subjects
Arachis, Health, Toxicology and Mutagenesis, media_common.quotation_subject, 0211 other engineering and technologies, chemistry.chemical_element, 02 engineering and technology, Zinc, 010501 environmental sciences, 01 natural sciences, Soil, Soil pH, Biochar, Dissolved organic carbon, Cation-exchange capacity, Soil Pollutants, 0105 earth and related environmental sciences, media_common, 021110 strategic, defence & security studies, Oryza sativa, Public Health, Environmental and Occupational Health, Oryza, General Medicine, Pollution, Indicator plant, Speciation, Lead, chemistry, Charcoal, Environmental chemistry, Environmental Pollution
Abstract

Biochar has been used to reduce the mobility and availability of heavy metals in contaminated paddy soils. A pot experiment was carried out to analyze the effects of peanut shell biochar (PBC) on the speciation and phytoavailability of Pb and Zn in contaminated acidic paddy soil using rice (Oryza sativa L.) as an indicator plant. Peanut shell biochar was applied to an acidic paddy soil contaminated with Pb and Zn at four rates (0%, 1%, 2%, and 5% w/w), and rice plants were grown in this soil. The soil pH, cation exchange capacity (CEC), water-soluble SO42–, dissolved organic carbon (DOC), CaCl2-extractable heavy metals, and speciation of heavy metals were determined. Additionally, biomass and concentrations of heavy metals in rice tissues were determined. The application of PBC significantly increased the pH, CEC, water-soluble SO42–, and DOC in the paddy soil, but decreased the content of CaCl2-extractable Pb and Zn. The CaCl2-extractable Pb and Zn showed significant negative correlations with the pH, CEC, water-soluble SO42–, and DOC (p

Published
2018

36. Foliar application of Zn reduces Cd accumulation in grains of late rice by regulating the antioxidant system, enhancing Cd chelation onto cell wall of leaves, and inhibiting Cd translocation in rice

Author

Zhen, Sheng, primary, Shuai, Hong, additional, Xu, Chao, additional, Lv, Guanghui, additional, Zhu, Xiangdong, additional, Zhang, Quan, additional, Zhu, Qihong, additional, Núñez-Delgado, Avelino, additional, Conde-Cid, Manuel, additional, Zhou, Yaoyu, additional, and Huang, Daoyou, additional

Published
2021
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37. Contrasting pathways of carbon sequestration in paddy and upland soils

Author

Chen, Xiangbi, Hu, Yajun, Xia, Yinhang, Zheng, Shengmeng, Ma, Chong, Rui, Yichao, He, Hongbo, Huang, Daoyou, Zhang, Zhenhua, Ge, Tida, Wu, Jinshui, Guggenberger, Georg, Kuzyakov, Yakov, Su, Yirong, Chen, Xiangbi, Hu, Yajun, Xia, Yinhang, Zheng, Shengmeng, Ma, Chong, Rui, Yichao, He, Hongbo, Huang, Daoyou, Zhang, Zhenhua, Ge, Tida, Wu, Jinshui, Guggenberger, Georg, Kuzyakov, Yakov, and Su, Yirong

Abstract

Paddy soils make up the largest anthropogenic wetlands on earth, and are characterized by a prominent potential for organic carbon (C) sequestration. By quantifying the plant- and microbial-derived C in soils across four climate zones, we identified that organic C accrual is achieved via contrasting pathways in paddy and upland soils. Paddies are 39%–127% more efficient in soil organic C (SOC) sequestration than their adjacent upland counterparts, with greater differences in warmer than cooler climates. Upland soils are more replenished by microbial-derived C, whereas paddy soils are enriched with a greater proportion of plant-derived C, because of the retarded microbial decomposition under anaerobic conditions induced by the flooding of paddies. Under both land-use types, the maximal contribution of plant residues to SOC is at intermediate mean annual temperature (15–20°C), neutral soil (pH~7.3), and low clay/sand ratio. By contrast, high temperature (~24°C), low soil pH (~5), and large clay/sand ratio are favorable for strengthening the contribution of microbial necromass. The greater contribution of microbial necromass to SOC in waterlogged paddies in warmer climates is likely due to the fast anabolism from bacteria, whereas fungi are unlikely to be involved as they are aerobic. In the scenario of land-use conversion from paddy to upland, a total of 504 Tg C may be lost as CO2 from paddy soils (0–15 cm) solely in eastern China, with 90% released from the less protected plant-derived C. Hence, preserving paddy systems and other anthropogenic wetlands and increasing their C storage through sustainable management are critical for maintaining global soil C stock and mitigating climate change.

Published
2021

40. Contrasting pathways of carbon sequestration in paddy and upland soils

Author

Chen, Xiangbi, primary, Hu, Yajun, additional, Xia, Yinhang, additional, Zheng, Shengmeng, additional, Ma, Chong, additional, Rui, Yichao, additional, He, Hongbo, additional, Huang, Daoyou, additional, Zhang, Zhenhua, additional, Ge, Tida, additional, Wu, Jinshui, additional, Guggenberger, Georg, additional, Kuzyakov, Yakov, additional, and Su, Yirong, additional

Published
2021
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49. Effects of Different Soil Amendments on the Uptake and Accumulation of Cadmium and Lead in Pakchoi (Brassica chinensis).

Author

WANG Yi, WANG Huajing, ZHENG Shen, XU Chao, LI Baizhong, WANG Shuai, and HUANG Daoyou

Abstract

A field experiment was conducted to study the effects of applying lime (L), sepiolite (S) and ferromanganese ore powder (FM) and their combinations on the availability of Cd and Pb, biomass of pakchoi and Cd and Pb content in heavy metal contaminated soil in equal amounts (the total application rate is 2.5 g/kg soil, or 562.5 g/m²). The results showed that under the application rate in this study, the biomass of pakchoi treated with L and LFM (lime + ferromanganese ore powder) was significantly reduced by 47.28% and 41.79% compared with the control, respectively. The three passivators and their combinations all increased soil pH and reduced the contents of CaCl2-Cd and CaCl2-Pb in soil. Compared with control treatment, the soil pH value increased by 0.07~1.73 units after application of amendments, and the content of CaCl2-Cd and CaCl2-Pb decreased by 9.34%~96.89% and 16.06%~78.10%, respectively. And the content of CaCl2-Cd in L treatment decreased the most, and that of CaCl2-Pb in LSFM (lime + sepiolite + ferromanganese ore powder) treatment decreased the most. Both SFM (sepiolite + ferromanganese ore powder) and LSFM treatments could significantly reduce the Cd and Pb content in the shoots of pakchoi. Compared to the control treatment, the application of SFM and LSFM reduced the Cd contents in the shoot of pakchoi significantly by 41.29% and 41.11%, and the Pb contents reduced by 30.71% and 46.46%, respectively. The results showed that considering the biomass and the content of Cd and Pb in the shoot of pakchoi, applying SFM and LSFM could reduce the content of Cd and Pb in the shoots of pakchoi without significantly reducing its biomass. The results of this study provide a reference for the safe production of pakchoi. [ABSTRACT FROM AUTHOR]

Published
2020
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