کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4490447 | 1317770 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The Production of Organic-Inorganic Compound Film-Coated Urea and the Characteristics of Its Nutrient Release The Production of Organic-Inorganic Compound Film-Coated Urea and the Characteristics of Its Nutrient Release](/preview/png/4490447.png)
The effect of different concentrations of natural macromolecular compound on the characteristics of nutrient release in the membrane materials of organic-inorganic compound film-coated urea was discussed, and the optimal concentrations for better nutrient release was proposed. The characteristics of nutrient release of film-coated urea were evaluated by soil column leaching experiment. Organic-inorganic compound film-coated urea showed good characteristics of nutrient release, which could be well simulated by Logistic curve. The two parameters in this curve, a and r, can be used to present nutrient release of film-coated urea, and followed the order of B > C > A and C < B < A, respectively, indicating that the release was stronger with the increasing concentration of natural macromolecular compound in the membrane, which implied better controllability of nutrient release. The concentration of 5% of natural macromolecular compound showed better characteristic of nutrient release and can be utilized as a membrane material combined with inorganic mineral powders to develop film-coated slow-release fertilizer.
Journal: Agricultural Sciences in China - Volume 8, Issue 6, June 2009, Pages 703-708