Preparation and Slow-Release Properties of Clay-Based Phosphatic Fertilizers

Abstract:

With potassium dihydrogen phosphate acting as raw material, using grinding and adsorption methods to prepare diffrent kinds of clay-based phosphatic fertilizers. And later, using sodium alginate to coat the fertilizers. Choosing soil leaching method to evaluate their slow-release properties. The results indicate that carrier properties have great influences on slow-release properties, the effect of different carriers are as follows: bentonite > kaolin> common earth. The coordinated role of bentonite and hydrotalcite to the slow-release properties is better than the single role of bentonite. The coating of sodium alginate can improve the slow-release properties of clay-based fertilizers.

• Periodical: Advanced Materials Research (Volumes 430-432)
• Pages: 974-977
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.430-432.974
• Online since: January 2012
• Authors: Jin Tian Yang, Guo Xiang Pan, Bin Cheng
• Keywords: Bentonite, Coating, Hydrotalcite, Phosphatic Fertilizers, Slow-Release

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