Differences of yield and nitrogen use efficiency under different applications of slow release fertilizer in spring maize

LI Guang-hao; CHENG Gui-gen; LU Wei-ping; LU Da-lei

首页> 中文期刊> 《农业科学学报（英文版）》 >Differences of yield and nitrogen use efficiency under different applications of slow release fertilizer in spring maize

Differences of yield and nitrogen use efficiency under different applications of slow release fertilizer in spring maize

开具论文收录证明 >>

期刊封面封底目录下载 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Excessive or insufficient application of fertilizer has raised broader concerns regarding soil and environmental degradation.One-time application of slow release fertilizer (SF) has been widely used to reduce yield gap with potential maize yield and improve nitrogen use efficiency (NUE).A 2-year field experiment (2018–2019) was conducted to evaluate the effects of SF rates from 0 to 405 kg N ha^(–1) (named F0,SF225,SF270,SF315,SF360,and SF405) and 405 kg N ha^(–1) of common fertilizer(CF405) on the grain yield,biomass and N accumulation,enzymatic activities related with carbon–nitrogen metabolism,NUE and economic analysis.Results indicated that the highest grain yields,NUEs and economic returns were achieved at SF360in both varieties.The enzymatic activities related with carbon–nitrogen metabolism,pre-and post-silking accumulation of biomass and N increased with increasing SF rate,and they were the highest at SF360 and SF405.The grain yield at SF360had no significant difference with that at SF405.However,the N partial factor productivity,N agronomic efficiency and N recovery efficiency at SF360 were 9.8,6.6 and 8.9% higher than that at SF405.The results also indicated that the average grain yields,NUE and economic benefit at SF405 were 5.2,12.3 and 18.1% higher than that at CF405.In conclusion,decreasing N rate from 405 kg ha^(–1)(CF) to 360 kg ha^(–1)(SF) could effectively reduce the yield gap between realized and potential maize yields.The N decreased by 11.1%,but the yield,NUE and economic benefit increased by 3.2,22.2 and 17.5%,which created a simple,efficient and business-friendly system for spring maize production in Jiangsu Province,China.

著录项

来源
《农业科学学报（英文版）》 |2021年第2期|554-564|共11页
作者
LI Guang-hao; CHENG Gui-gen; LU Wei-ping; LU Da-lei;
展开▼
作者单位

Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College Yangzhou University/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou 225009 P.R.China;

Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College Yangzhou University/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou 225009 P.R.China;

Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College Yangzhou University/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou 225009 P.R.China;

Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Agricultural College Yangzhou University/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou 225009 P.R.China;

展开▼
原文格式 PDF
正文语种 eng
中图分类
关键词

Differences of yield and nitrogen use efficiency under different applications of slow release fertilizer in spring maize

摘要

著录项

相关主题

期刊订阅