γ-聚谷氨酸增效尿素的淋溶特性及肥效研究
Study on the Fertilizer Efficiency of γ-polyglutamic Acid Urea and Its Eluviation Characteristics
揣峻峰 1肖艳 1庄钟娟 1王磊 1徐志文2
作者信息
- 1. 领先生物农业股份有限公司,河北秦皇岛066004;河北省农业生物技术工程技术研究中心,河北秦皇岛066004
- 2. 领先生物农业股份有限公司,河北秦皇岛066004
- 折叠
摘要
[目的]研究γ-聚谷氨酸增效尿素的淋溶特性及肥料效果.[方法]以制备的γ-聚谷氨酸增效尿素和常规尿素为氮肥,通过淋溶试验和盆栽试验,测定其对氮素淋失和小白菜生长的影响.[结果]淋溶试验表明,γ-聚谷氨酸增效尿素能使氮素缓慢释放,减缓氮的流失.盆栽试验显示,γ-聚谷氨酸增效尿素能显著提高小白菜的单株鲜重、单株干重和根长,分别提高了33.6％、48.4％和23.1％;能提高小白菜对氮、磷、钾营养元素的累积,小白菜的氮、磷、钾含量分别提高了16.7％、12.0％和9.9％;能提高土壤的有机质、碱解氮、有效磷、速效钾含量.[结论]γ-聚谷氨酸增效尿素的保肥效果和在小白菜上的应用效果显著,值得在小白菜种植中推广应用.
Abstract
[Objective] The aim was to evaluate the fertilizer efficiency of γ-polyglutamic acid urea and its eluviation characteristics.[Method] The γ-polyglutamic acid urea and ordinary urea were used as nitrogen fertilizer.The effect on nitrogen leaching and the growth of pakchoi was studied by leaching test.and pot experiment.[Result] The eluviation experiment showed that γ-polyglutamic acid urea could accelerate the release of nitrogen and slow down the loss of nitrogen.The pot experiment indicated that γ-polyglutamic acid urea could significantly increase the fresh weight,dry weight and root length of the pakchoi by 33.6％,48.4％ and 23.1％.Moreover,the contents of nitrogen,phosphorus and potassium in pakchoi were increased by 16.7％,12.0％ and 9.9％ respectively and the contents of organic matter,available nitrogen,phosphorus and potassium in soil were increased by applying γ-polyglutamic acid urea.[Conclusion] The γ-polyglutamic acid urea can reduce nitrogen-leaching and promote the growth of pakchoi.It is worth popularizing and applying γ-polyglutamic acid urea in pakchoi cultivation.
关键词
γ-聚谷氨酸/尿素/小白菜/淋溶特性/肥效Key words
γ-polyglutamic acid/Urea/Pakchoi/Eluviation characteristics/Fertilizer efficiency引用本文复制引用
基金项目
河北省科技计划项目(14222910D)
河北省科技计划项目(15226415D)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据