Granular, Slow-Release Fertilizer from Urea-formaldehyde, Ammonium Polyphosphate, and Amorphous Silica Gel: A New Strategy Using Cold Extrusion

被引：42

作者：

Xiang, Yang ^{[1
]}

Ru, Xudong ^{[1
]}

Shi, Jinguo ^{[1
]}

Song, Jiang ^{[1
]}

Zhao, Haidong ^{[1
]}

Liu, Yaqing ^{[1
]}

Zhao, Guizhe ^{[1
]}

机构：

[1] North Univ China, Sch Mat Sci & Engn, Res Ctr Engn Technol Polymer Composites Shanxi Pr, Taiyuan 030051, Shanxi, Peoples R China

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2018年 / 66卷 / 29期

关键词：

granular; slow-release fertilizer; urea-formaldehyde; ammonium polyphosphate; amorphous silica gel; cold extrusion; INTUMESCENT FLAME-RETARDANT; WATER-RETENTION; COATED UREA; POLY(BUTYLENE SUCCINATE); CRYSTALLINE REGIONS; POLYMER; SUPERABSORBENT; BIODEGRADATION; CELLULOSE; NITROGEN;

D O I：

10.1021/acs.jafc.8b02349

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

A new granular, slow-release fertilizer prepared by a cold-extrusion strategy (GSRFEx) based on urea-formaldehyde (UF), ammonium polyphosphate (APP), and amorphous silica gel (ASG) was presented. Characterizations showed that there were strong hydrogen-bond interactions and good compatibility among UF, APP, and ASG in GSRFEx. The mechanical properties as well as the slow-release properties of GSRFEx were greatly enhanced after the addition of APP and ASG to UF. Rape pot experiments indicated that GSRFEx could improve N-use efficiency dramatically and thereby facilitate the growth of rape. Importantly, as an economical, effective, and environment-friendly technology, cold extrusion has great potential to be applied in horticulture and agriculture. We hope that our work can offer an alternative method for the design of slow-release fertilizers with desirable properties.

引用

页码：7606 / 7615

页数：10

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