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Effects of Fermented nori (Pyropia yezoensis) Seaweed Liquid Fertilizers on Growth Characteristics, Nutrient Uptake, and Iodine Content of Komatsuna (Brassica rapaL.) Cultivated in Soil

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American Journal of Plant Sciences 2018年第11期9卷 2227-2243页

作者： Seinn Moh Moh Kyi Moe Yasumasa Obo Shiniti Obo Aung Zaw Htwe Takeo Yamakawa Laboratory of Plant Nutrition Graduate School of Bioresource and Bioenvironmental Sciences Faculty of Agriculture Kyushu University Fukuoka Japan MANAAKI Co. Ltd. Saga Japan Laboratory of Plant Nutrition Division of Molecular Biosciences Department of Bioresource and Bioenvironmental Sciences Faculty of Agriculture Kyushu University Fukuoka Japan

We investigated the effects of fermented nori (Pyropia yezoensis) liquid fertilizers on plant growth, soil plant analysis development (SPAD) values, and nutrient uptake of komatsuna (Brassica rapa L. var. wakana komatsuna) plants. The four types of fermented nori seaweed liquid fertilizers (SLFs) evaluated in this study were prepared by anaerobic fermentation of unwashed nori (SLF1), aerobic fermentation of unwashed nori (SLF2), anaerobic fermentation of washed nori (SLF3), and aerobic fermentation of washed nori (SLF4). In Experiment 1, the highest plant growth, SPAD, and nutrient uptake values were obtained from treatment with SLF2 and SLF4. There were no significant differences between the effects of basal and foliar application of SLFs, except for iodine (I) content;plants treated with SLF1 had the highest I content. In Experiment 2, plant growth and nutrient uptake decreased with higher concentrations of SLFs. Plants treated with 25% SLF2 + 75% chemical fertilizer (CF) or 25% SLF4 + 75% CF exhibited significantly higher plant growth and nutrient uptake. The highest I content resulted from treatment with 75% SLF1 + 25% CF or 100% SLF1. Taken together, our results showed that 25% SLF + 75% CF produced the best plant growth characteristics, nutrient uptake, and I content relative to the controls. Therefore, basal application of these liquid organic fertilizers can be used to increase productivity, nutrient uptake, and I content and to reduce nitrate-nitrogen content in komatsuna production.

关键词： nori Komatsuna Basal and Foliar Application Plant Growth Nutrient Uptake I Content

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Effects of Fermented nori (Pyropia yezoensis) Liquid Fertilizer on Plant Growth Characteristics and Nutrient Content of Komatsuna (Brassica rapaL. var. Wakana Komatsuna) Cultivated in Vermiculite

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American Journal of Plant Sciences 2018年第8期9卷 1601-1617页

作者： Seinn Moh Moh Kyi Moe Yasumasa Obo Shiniti Obo Aung Zaw Htwe Takeo Yamakawa Laboratory of Plant Nutrition Graduate School of Bioresource and Bioenvironmental Sciences Faculty of Agriculture Kyu-shu University 6-10-1 Hakozaki Higashi-ku Fukuoka Japan MANAAKI Co. Ltd. 4-28 Imajuku-machi Saga Japan Laboratory of Plant Nutrition Division of Molecular Biosciences Department of Bioresource and Bioenvironmental Sciences Faculty of Agriculture Kyushu University 6-10-1 Hakozaki Higashi-ku Fukuoka Japan

We conducted plant growth experiments in microbe-free vermiculite to study the effects of four types of fermented seaweed liquid fertilizer (SLF) made from nori (Pyropia yezoensis) seaweed on the germination, plant growth characteristics, SPAD value, and nutrient content and uptake of komatsuna (Brassica rapa L. var. wakana komatsuna). The four types of fermented nori SLF used in this study were prepared by anaerobic fermentation of unwashed nori (SLF1), aerobic fermentation of unwashed nori (SLF2), anaerobic fermentation of washed nori (SLF3), and aerobic fermentation of washed nori (SLF4). Komatsuna seeds treated with 200-, 300-, and 400-fold dilutions of SLFs exhibited improved relative germination ratios (RGRs) at 3 and 4 days after sowing (DAS). At 4 DAS, the RGRs of seeds treated with 10-, 100-, 200-, 300-, and 400-fold SLF dilutions showed no differential effect. Seeds treated with undiluted SLFs did not germinate by 4 DAS. SLF1 may promote komatsuna seed germination. The nitrogen (N), calcium, magnesium, sodium (Na), and iodine (I) contents of plants treated with SLF1 were significantly increased relative to plants treated with the other SLFs. Moreover, the I and Na contents of plants were significantly increased by foliar spray application of different dilutions of SLF1. However, SLF treatment markedly reduced the shoot dry weight compared with 1/2-strength modified Hoagland nutrient (MHN) solution, although the same amounts of N and K were applied. SPAD values of the plants treated with SLFs were significantly higher than those of plants treated with MHN. Foliar treatment with SLFs had no significant effect on plant growth, SPAD value, or uptake of nutrients (except Na) relative to the control, but the I content was increased. Plants treated with SLF1 and SLF2 exhibited the highest Na uptake. Foliar spray treatments with SLF1 resulted in the highest I contents in plants. Based on our results, SLF1 is suitable for use as a liquid fertilizer to promote germi

关键词： nori (Pyropia yezonensis) Komatsuna (Brassica rapa L) Aerobic and Anaerobic Fermentation Basal and Foliar Application Macro-Nutrient Content I Content

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在NaCl非水离子液体中制备类石墨烯状氮硫共掺杂生物质碳材料来提高锂硫电池的动力学研究（英文）

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Science China Materials 2019年第4期62卷 455-464页

作者：黄曼杨靖宇奚宝娟弭侃封振宇刘静冯金奎钱逸泰熊胜林 Key Laboratory of the Colloid and Interface Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shandong University College of Materials Science and Engineering Qingdao University of Science and Technology Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials(Ministry of Education) School of Materials Science and Engineering Shandong University Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China

本论文通过结构设计利用简单方法成功制备了一种二维N,S共掺杂类石墨烯纳米片复合结构,即利用NaCl非水离子液体的剥离作用使生物质剥离得到二维片层类石墨烯结构.这种新的非水离子液体剥离技术较其他的碳材料剥离技术具有环境友好性、... 详细信息

本论文通过结构设计利用简单方法成功制备了一种二维N,S共掺杂类石墨烯纳米片复合结构,即利用NaCl非水离子液体的剥离作用使生物质剥离得到二维片层类石墨烯结构.这种新的非水离子液体剥离技术较其他的碳材料剥离技术具有环境友好性、低成本、安全无毒性等优势,有利于实现量化制备锂硫电池电极材料.该材料采用大自然中广泛存在的紫菜作为原料,其内部富含的氨基酸为原位掺杂N,S元素提供了可能性.二维结构的纳米片能够提供有效的导电性和电解液浸润性的网络结构,同时还能够有效地降低电池在充放电循环过程中导致的体积膨胀效应,最终实现一种高机械性能、优异电化学活性的电极在锂硫电池储能领域中的应用.

关键词： nori powder graphene-like N S-codoped bio-carbon nanosheets NaCl non-aqueous ionic liquid reaction kinetics lithium-sulfur batteries

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