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探讨了两种有机无机复合物包膜缓释尿素(BG、BF)在不同温度下养分释放特性。研究结果表明,包膜缓释尿素氮素释放率,随着培养温度的升高而增大;氮素释放特征可以用一级反应动力学方程描述,氮素释放速率常数,随着温度升高而增大。其机理为包膜缓释尿素在氮素释放过程中活化能与养分释放速率密切相关,活化能越低,养分释放速率常数越大,养分释放加快,这主要与包膜材料的性质有关,是影响养分释放快慢的内因。
The nutrient release characteristics of two organic-inorganic composite coated sustained-release urea (BG, BF) at different temperatures were discussed. The results showed that the release rate of coated sustained-release urea nitrogen increased with the increase of incubation temperature. The characteristics of nitrogen release can be described by the first-order kinetic equation. The nitrogen release rate constant, Increase. The mechanism is that the activation energy of coated slow release urea is closely related to the release rate of nutrients during the process of nitrogen release. The lower the activation energy, the higher the nutrient release rate constant and the faster the release of nutrients, which is mainly related to the nature of the coating material. Internal factors affecting the speed of nutrient release.