作物学报2011，Vol.37Issue(4)：729-734,6.DOI:10.3724/SP.J.1006.2011.00729
长江流域油菜氮磷钾肥料利用率现状研究
Status of Nutrient Use Efficiencies of Rapeseed in the Yangtze River Basin
摘要
Abstract
Nutrient use efficiency is an important index not only for fertilizer recommendation on the field scale but also for forecasting fertilizer demand on the regional and national scales, however, exact nutrient use efficiencies of rapeseed in the Yangtze River Basin have not been well known yet.In this paper, data from 74 field experiments were collected and used for analysis and evaluation of partial factor productivity (PFP), agronomic efficiency (AE), apparent recovery efficiency (RE), physiological efficiency (PE), and fertilizer contribution index of rapseed.The results indicated that AE averaged 6.2 kg kg-1 N, 6.3 kg kg-1 P2O5, and 2.6 kg kg-1 K2O, respectively.RE averaged N 34.0％, P2O5 17.4％, and K2O 36.9％, respectively.The averages of PE were 18.5 kg kg-1 N, 35.5 kg kg-1 P2O5, and 9.1 kg kg-1 K2O.The contribution of N, P and K fertilizer to rapeseed yield was 41.9％, 21.4％, and 11.5％, respectively.It was concluded that nutrient use efficiencies of rapeseed in the Yangtze River Basin were low.Thus, rapeseed yield and nutrient use efficiencies should be improved simultaneously to ensure sustainability for rapeseed production.关键词
油菜/肥料利用率/氮/磷/钾Key words
Rapeseed/ Nutrient use efficiency/ Nitrogen/ Phosphorus/ Potassium引用本文复制引用
邹娟,鲁剑巍,陈防,李银水..长江流域油菜氮磷钾肥料利用率现状研究[J].作物学报,2011,37(4):729-734,6.基金项目
本研究由国家"十一五"科技支撑计划项目(2008BADA4B08),国家现代农业(油菜)产业技术体系专项经费资助项目(nycytx-005),教育部新世纪人才项目(NCET-07-0345)和国际植物营养研究所(IPNI)合作项目(Hubei-35)资助. （2008BADA4B08）
