植物营养与肥料学报2012，Vol.18Issue(3)：571-578,8.
生态集约化养分管理对春玉米产量和氮素利用率的影响
Effect of ecological intensification nutrient management on the yield and nitrogen use efficiency of spring maize
摘要
Abstract
It was investigated that different nitrogen managements affected crop yield, nitrogen uptake, nitrogen balance and net profit of spring maize production in two years＇ field experiment in Jilin maize belt. The results showed that compared with famers＇ practice （FP）, the grain yield and nitrogen uptake under ecological intensification nutrient management （EI） which reducing N fertilizer by 28% were not decreased while the recovery efficiency, agronomic efficiency and partial factor productivity of nitrogen and net profit were increased by 48.1% , 56. 9% ,43.8% and 11.0% , respectively. The grain yield and nitrogen utilization have no significant effect in the second year when no nitrogen fertilizer was applied in the first year. Apparent nitrogen loss of EI and FP in two crops was 97 and 226 kg/ha, respectively. The nitrogen management based on agronomic efficiency of fertilizer, crop target yield and the response of crop to fertilizer application could be a feasible N management practice for both high yield production and environmental protection.关键词
养分管理专家系统/氮素农学效率/氮素管理/氮素平衡Key words
Nutrient Expert/agronomic efficiency of nitrogen/nitrogen management/nitrogen balance分类
农业科技引用本文复制引用
苗建国,金继运,仇少君,谢佳责,侯云鹏,徐新朋,何萍..生态集约化养分管理对春玉米产量和氮素利用率的影响[J].植物营养与肥料学报,2012,18(3):571-578,8.基金项目
国家重点基础研究发展计划课题 （）
国家科技支撑计划课题 （）
国际植物营养研究所资助. （）
