邓小楠^1,3,韩效钊²,胡献国¹,郑曙峰³,刘昆²

• 1:合肥工业大学 机械工程学院， 安徽 合肥 230009
• 2:合肥工业大学 化学与化工学院， 安徽 合肥 230009
• 3:安徽省农业科学院 棉花研究所， 安徽 合肥 230001

摘要(Abstract)：

研究以聚乳酸为包膜材料，分别采用溶液浇铸法和流化床包膜法制备了聚乳酸薄膜和包膜尿素颗粒，测定了氮养分和水蒸气对聚乳酸薄膜的渗透系数。根据测试数据，使用SHAVIV等提出的数学模型，研究建立了以温差为依据的分段数学模拟方法，预测了聚乳酸包膜尿素氮养分累积释放性能。分段数学模拟预测法与田间试验法结果相比，平均绝对偏差为1.74%，平均相对偏差为3.01%。研究结果表明：采用SHAVIV等提出的数学模型并分段模拟的方法可较好地预测包膜肥料养分释放特征，对于聚合物包膜肥料膜材料的筛选和应用具有重要现实意义。

关键词(KeyWords)： 氮养分;聚乳酸;渗透系数;数学模型;分段模拟

Abstract:

Keywords:

基金项目(Foundation): 安徽省科技攻关计划（JZ2018AKKG0331）；国家重点研发计划（2017YFD0201900）。

作者(Author): 邓小楠^1,3,韩效钊²,胡献国¹,郑曙峰³,刘昆²

DOI: 10.3969/j.issn.1003-9015.2020.01.026

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