摘要
聚-γ-谷氨酸(γ-PGA)是一种主要由微生物生产的胞外高分子聚酰胺,仅由谷氨酸单体组成,具有阴离子特性、离子吸附性、螯合性、吸水性、生物可降解性和生物兼容性。在农业生产中用作肥料增效剂,能显著地促进作物生长、增加作物产量和提高肥料利用率,具有显著的增产节肥效应。γ-PGA具备完全生物可降解性和生物兼容性,相较于其它肥料增效剂具有突出的生态和环保优势,未来在农业生产中具有广阔的应用前景。理解其增产节肥作用机制是应用和推广γ-PGA新型肥料的理论基础,为进一步扩大和加深γ-PGA在肥料产业和农业中的效果和贡献,未来应着重从土壤养分转化、植物营养和植物生理角度开展其增产节肥作用机制。同时,开展其对不同化肥的增效效果研究是靶向开发与应用新型聚氨酸肥料的理论基础和科学支撑。
Poly-γ-glutamic acid(γ-PGA)is a kind of extracellular macromolecule polyamide that mainly produced by microorganisms and is only made of glutamic acid units.γ-PGA is anionic,ionic adsorptive,chelating,water-absorptive,biodegradable,and biocompatibility.As a kind of fertilizer synergist in agriculture,γ-PGA can promote plant growth,increase crop yield and improve fertilizer efficiency significantly.Its totally biodegradable and biocompatibility properties make it distinguished from other chemical fertilizer synergists and have outstanding ecological and environmental advantages,which makes it has promising application prospects in agriculture in future.Currently,the theoretical basis for applying and promotingγ-PGA fertilizer is to understand its mechanism of yield-increasing and fertilizer-saving function.In order to further expand and deepen the function and contribution ofγ-PGA in fertilizer industry and agriculture,this mechanism should be further studied from the perspectives of plant physiology,plant nutrition and soil nutrient cycling.At the same time,it is very needed to carry out research about synergistic effect ofγ-PGA on different fertilizers,which is the theoretical basis and scientific support for developing and applying the novelγ-PGA fertilizers.
作者
张爽
丁芳
裴久勃
孙福军
张蕾
石元亮
ZHANG Shuang;DING Fang;PEI Jiu-bo;SUN Fu-jun;ZHANG Lei;SHI Yuan-liang(Shenyang Agricultural University,Land and Environment College,Shenyang Liaoning 110866;Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang Liaoning 110016;Shenyang Zhongke Newfertilizer Co.Ltd.,Shenyang Liaoning 110016;Engineering Laboratory of Green Fertilizer,Chinese Academy of Sciences,Shenyang Liaoning 110016;National Engineering Laboratory of Soil Nutrient Management,Shenyang Liaoning 110016)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2022年第12期218-224,共7页
Soil and Fertilizer Sciences in China
基金
国家自然科学基金(41807090)
山东省自然科学基金(ZR2019BD034)
中国科学院绿色肥料工程实验室开放基金(Y9382B12YY)
中国科学院沈阳应用生态研究所自选/自主部署项目(E0612B1)。
关键词
聚-γ-谷氨酸
肥料增效剂
土壤氮养分
聚氨酸肥料
新型肥料
poly-γ-glutamic acid
fertilizer synergist
soil nitrogen nutrition
poly-amino acid fertilizers
new fertilizers
