Environmentally friendly fertilizers: A review of materials used and their effects on the environment

被引:379
作者
Chen, Jiao [1 ]
Lu, Shaoyu [1 ]
Zhang, Zhe [1 ]
Zhao, Xuxia [1 ]
Li, Xinming [1 ]
Ning, Piao [1 ]
Liu, Mingzhu [1 ]
机构
[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Key Lab Nonferrous Met Chem & Resources Utilizat, Dept Chem, Lanzhou 730000, Gansu, Peoples R China
基金
中国国家自然科学基金;
关键词
Environmentally friendly fertilizer; Nutrient releases; Soil; Environment; Sustainable agriculture; CONTROLLED-RELEASE FERTILIZER; GREENHOUSE-GAS EMISSIONS; EFFICIENCY NITROGEN FERTILIZERS; SLOW-RELEASE; KAPPA-CARRAGEENAN; WATER-RETENTION; WHEAT-STRAW; AGRICULTURAL SUSTAINABILITY; HYDROPHILIC POLYMERS; COMPOUND FERTILIZER;
D O I
10.1016/j.scitotenv.2017.09.186
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Fertilizer plays an important role in maintaining soil fertility, increasing yields and improving harvest quality. However, a significant portion of fertilizers are lost, increasing agricultural cost, wasting energy and polluting the environment, which are challenges for the sustainability ofmodern agriculture. Tomeet the demands of improving yieldswithout compromising the environment, environmentally friendly fertilizers (EFFs) have been developed. EFFs are fertilizers that can reduce environmental pollution from nutrient loss by retarding, or even controlling, the release of nutrients into soil. Most of EFFs are employed in the form of coated fertilizers. The application of degradable natural materials as a coating when amending soils is the focus of EFF research. Here, we review recent studies onmaterials used in EFFs and their effects on the environment. Themajor findings covered in this review are as follows: 1) EFF coatings can prevent urea exposure in water and soil by serving as a physical barrier, thereby reducing the urea hydrolysis rate and decreasing nitrogen oxide (NOx) and dinitrogen (N2) emissions, 2) EFFs can increase the soil organicmatter content, 3) hydrogel/superabsorbent coated EFFs can buffer soil acidity or alkalinity and lead to an optimal pH for plants, and 4) hydrogel/superabsorbent coated EFFs can improvewater- retention andwater- holding capacity of soil. In conclusion, EFFs play an important role in enhancing nutrients efficiency and reducing environmental pollution. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:829 / 839
页数:11
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