Effect of Glycolipids Application Combined with Nitrogen Fertilizer Reduction on Maize Nitrogen Use Efficiency and Yield
文献类型： 外文期刊
作者： Meng, Xianghai 1 ; Dong, Qingshan 1 ; Wang, Baicheng 1 ; Ni, Zheng 2 ; Zhang, Xingzhe 1 ; Liu, Chunguang 1 ; Yu, Wenquan 1 ; Liu, Jie 3 ; Shi, Xinrui 1 ; Xu, Dehai 1 ; Duan, Yan 2 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Mudanjiang Branch, Mudanjiang 157000, Peoples R China
2.Chinese Acad Sci, Hefei Inst Phys Sci, Ctr Ion Beam Bioengn & Green Agr, Hefei 230031, Peoples R China
3.Heilongjiang Acad Black Soil Conservat & Utilizat, Harbin 150086, Peoples R China
关键词： glycolipids; nitrogen reduction; maize yield; net economic benefits; nitrogen fertilizer use efficiency
期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 9 期
页码：
收录情况： SCI
摘要： Microbial-driven N turnover is important in regulating N fertilizer use efficiency through the secretion of metabolites like glycolipids. Currently, our understanding of the potential of glycolipids to partially reduce N fertilizer use and the effects of glycolipids on crop yield and N use efficiency is still limited. Here, a three-year in situ field experiment was conducted with seven treatments: no fertilization (CK); chemical N, phosphorus and potassium (NPK); NPK plus glycolipids (N+PKT); and PK plus glycolipids with 10% (0.9 N+PKT), 20% (0.8 N+PKT), 30% (0.7 N+PKT), and 100% (PKT) N reduction. Compared with NPK, glycolipids with 0-20% N reduction did not significantly reduce maize yields, and also increased N uptake by 6.26-11.07%, but no significant changes in grain or straw N uptake. The N resorption efficiency under 0.9 N+PKT was significantly greater than that under NPK, while the apparent utilization rates of N fertilizer and partial factor productivity of N under 0.9 N+PKT were significantly greater than those under NPK. Although 0.9 N+PKT led to additional labor and input costs, compared with NPK, it had a greater net economic benefit. Our study demonstrates the potential for using glycolipids in agroecosystem management and provides theoretical support for optimizing fertilization strategies.
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