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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Preparation and Properties of a Coated Slow-Release and Water-Retention Biuret Phosphoramide Fertilizer with Superabsorbent
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Preparation and Properties of a Coated Slow-Release and Water-Retention Biuret Phosphoramide Fertilizer with Superabsorbent

机译：高吸收性缓释保水缩二脲脲磷酰胺肥料的制备与性能

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摘要

In this investigation, a novel water-insoluble slow-release fertilizer, biuret polyphosphoramide (BPAM), was formulated and synthesized from urea, phosphoric acid (H3PO4), and ferric oxide (Fe2O3). The structure of BPAM was characterized by Fourier transform infrared (FTIR) spectroscopy. Subsequently, a coated slow-release BPAM fertilizer with superabsorbent was prepared by ionic cross-linked carboxy-methylchitosan (the core), acrylic acid, acrylamide, and active carbon (the coating). The variable influences on the water absorbency were investigated and optimized. Component analysis results showed that the coated slow-release BPAM contained 5.66% nitrogen and 11.7% phosphorus. The property of water retention, the behavior of slow release of phosphorus, and the capacity of adsorption of cations were evaluated, and the results revealed that the product not only had good slow-release property and excellent water retention capacity but also higher adsorption capacities of cations in saline soil.
机译：在这项研究中，由尿素，磷酸（H3PO4）和三氧化二铁（Fe2O3）配制并合成了一种新型的水不溶性缓释肥料，缩二脲聚磷酰胺（BPAM）。 BPAM的结构通过傅立叶变换红外（FTIR）光谱进行了表征。随后，通过离子交联的羧甲基壳聚糖（核），丙烯酸，丙烯酰胺和活性炭（被膜）制备了具有超吸收剂的包膜缓释BPAM肥料。研究和优化了对吸水率的变量影响。成分分析结果表明，包衣的缓释BPAM含有5.66％的氮和11.7％的磷。评价了保水性能，磷的缓释行为和阳离子的吸附能力，结果表明该产品不仅具有良好的缓释性能和优异的保水能力，而且具有较高的吸附能力。盐渍土壤中的阳离子。

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