Nutrient Release Mechanism and Model of Polymer Coated Slow Release Fertilizer

被引：0
|
作者：
Zhao X. [1 ]
Guo Y. [1 ]
Chen Q. [1 ]
Ao X. [1 ]
机构：
[1] College of Chemistry and Chemical Engineering, Guizhou University, Guiyang
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2020年 / 36卷 / 10期
关键词：
Diffusion mechanism; Fracture mechanism; Nutrient release model; Slow-release fertilizers;
D O I：
10.16865/j.cnki.1000-7555.2020.0238
中图分类号：
学科分类号：
摘要：
As a research hotspot, a lot of achievements have been made in new slow-release fertilizers, but there were few studies on the mechanism of nutrient release and the influencing factors of nutrient release of slow-release fertilizers. Based on the characteristics of various polymer materials, the nutrient release mechanism of polymer coated slow-release fertilizers was summarized, including the diffusion mechanism and fracture mechanism. At the same time, due to the variety of membrane materials and the complexity of nutrient release process, the existing nutrient release mechanism cannot accurately evaluate the performance of polymer coated slow-release fertilizer. It is necessary to establish a slow-release model to describe the nutrient release of polymer coated slow-release fertilizer. This paper summarized the nutrient release models of the existing new slow-release fertilizer, and the research results of these models in improving the controlled release ability of slow-release fertilizer. The further research directions of improving the nutrient utilization efficiency of slow-release fertilizer were put forward, which are combining the slow-release fertilizer model with the plant growth nutrient demand. © 2020, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：170 / 176
页数：6
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