数字农科院2.0

Water retention and fertilizer slow release integrated superabsorbent synthesized from millet straw and applied in agriculture

文献类型： 外文期刊

作者： Weishuai Wang;Zhengli Yang;Aiping Zhang;Shiqi Yang

作者机构：

关键词： Fertilizer; Millet straw; Semi-interpenetrating polymer networks; Slow-release; Water retention

期刊名称： Ind. Crops Prod.

ISSN： 0926-6690

年卷期： 2021 年 160 卷

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： To enhance utilization of waste straw and improve fertilizer efficiency, a novel semi-interpenetrating polymer network fertilizer (MSP-g-AA/PVA-APP) synthesized from straw cellulose and linear polymer was prepared by solution polymerization. The ammonium polyphosphate (APP) was introduced to supply nitrogen and phosphorus nutrients. The prepared materials were characterized with scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD) and thermogravimetric analysis (TGA). The water absorbency and slow-release behavior of MSP-g-AA/PVA-APP were also studied. The results indicated that MSP-g-AA/PVA-APP exhibited excellent water absorbency of 681.3 g/g in distilled water and enhanced the water retention capacity of soil. The cumulative N and P release rates of MSP-g-AA/PVA-APP were 55.1 % and 47.3 % after 30 days in soil, respectively. The effect of MSP-g-AA/PVA-APP on growth of wheat was studied, and the results show that the application products could facilitate the growth of wheat. It could be concluded that the product with water retention and slow-release property, being low costs and friendly to environment, had great potential for application in agricultural. © 2020 Elsevier B.V.

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