Biomass-based multifunctional fertilizer system featuring controlled-release nutrient, waterretention and amelioration of soil

被引：78

作者：

Wang, Xinggang ^{[1
,2
,4
]}

Lu, Shaoyu ^{[1
,2
]}

Gao, Chunmei ^{[1
,2
]}

Xu, Xiubin ^{[1
,2
]}

Wei, Yi ^{[1
,2
]}

Bai, Xiao ^{[1
,2
]}

Feng, Chen ^{[1
,2
]}

Gao, Nannan ^{[1
,2
]}

Liu, Mingzhu ^{[1
,2
]}

Wu, Lan ^{[3
]}

机构：

[1] Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China

[3] Northwest Univ Minor, Coll Chem Engn, Lanzhou 730030, Peoples R China

[4] Petrochina Lanzhou Petrochem Co, Lanzhou Petrochem Corp, Res Inst, Lanzhou 730060, Peoples R China

来源：

RSC ADVANCES | 2014年 / 4卷 / 35期

基金：

中国国家自然科学基金;

关键词：

WATER-RETENTION; SLOW-RELEASE; SUPERABSORBENT; POLYMER; UREA; DEGRADATION;

D O I：

10.1039/c4ra00207e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In an effort to enhance the efficiency of fertilizer use and minimize adverse environmental effects, a novel biomass-based, multifunctional controlled-release fertilizer (BMCF) was prepared to improve nutrient use efficiency and enhance crop production systems for more sustainable agriculture practices. The fertilizer design included natural attapulgite as a matrix, co-granulated ammonium zinc phosphate and urea as fertilizer core, cellulose acetate butyrate (CAB) as an inner coating, and a carboxymethyl chitosan-gpoly( acrylic acid)/attapulgite (CMCS-g-PAA/APT) superabsorbent composite as an outer coating. The effect of an APT matrix, CAB inner coating and superabsorbent composite outer coating on nutrient release rate was investigated. The influence of the BMCF on water-holding and water-retention capacity of soil samples was determined. The degradation behavior of the CMCS-g-PAA/APT outer coating in soil solution was evaluated. The experimental results indicated that the product prepared by a simple and economical method can effectively reduce N leaching loss and runoff, improve soil moisture retention capacity, and ameliorate soil acidity and alkalinity.

引用

页码：18382 / 18390

页数：9

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