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    题名: Preparation of NPK nanofertilizer based on chitosan nanoparticles and its effect on biophysical characteristics and growth of coffee in green house
    作者: Ngoc Minh Chau Ha;Thi Huyen Nguyen;San‑Lang Wang;Anh Dzung Nguyen
    关键词: Nanofertilizers;Chitosan nanoparticles;Coffee;Photosynthesis;Chlorophylls
    日期: 2019
    上传时间: 2018-10-23 12:10:20 (UTC+8)
    出版者: Springers
    摘要: NPK nanofertilizer was prepared by loading nitrogen (N), phosphorous (P) and
    potassium (K) into chitosan nanoparticles. The chitosan nanoparticles were prepared
    via ionic gelation of tripolyphosphate and chitosan solution. The chitosan nanoparticles
    were characterized by SEM, TEM, zeta potential and size distribution. The
    results showed that size distribution was from 300 to 750 nm and zeta potential of
    around 50 mV. The released kinetics of nitrogen, phosphorous and potassium in
    nanofertilizer were also investigated for 240 h. The nanofertilizer was applied to
    coffee seedlings in a greenhouse condition. The results showed that the nanofertilizer
    enhanced uptake of nutrients, photosynthesis and growth of coffee plants.
    Application of the nanofertilizer improved 17.04% nitrogen, 16.31% phosphorous
    and 67.50% potassium content in the leaves of treated plots compared to the control;
    total chlorophyll content increased up to 30.68% and 71.7% of photosynthesis
    net rate. Application of nanofertilizer also enhanced leaf number, plant height and
    leaf area of the coffee seedlings. Using the nanofertilizer may be a potential way to
    enhance use efficiency of fertilizers for coffee.
    關聯: Research on Chemical Intermediates 45(1), p.51-63
    DOI: 10.1007/s11164-018-3630-7
    显示于类别:[化學學系暨研究所] 期刊論文

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