应用生态学报2011，Vol.22Issue(9)：2331-2336,6.
施氮和肥料添加剂对水稻产量、氮素吸收转运及利用的影响
Effects of applying nitrogen fertilizer and fertilizer additive on rice yield and rice plant nitrogen uptake, translocation, and utilization
摘要
Abstract
A field experiment was conducted in the Taihu Lake region of southern Jiangsu to study the effects of applying nitrogen ( N) fertilizer and fertilizer additive on the rice yield and the rice plant N uptake, translocation, and utilization. Applying N fertilizer had significant positive effects on the rice yield, accumulative absorbed N at all growth stages and at each growth stage, and N translocation rate after anthesis (P<0. 01). However, when the N application rate exceeded 200 kg · hm-2, its yield-increasing effect was not significant (P>0.05). The N translocation rate after anthesis and the N fertilizer use efficiency decreased with increasing N application rate. Applying fertilizer additive further improved the rice yield, accumulative absorbed N, N translocation rate af-ter anthesis, and N fertilizer use efficiency, and this effect was more evident when the N application rate was equal to or greater than 200 kg · hm-2. Relatively high rice yield and N use efficiency were achieved when applying 150 kg · hm-2 of N fertilizer without the application of fertilizer additive.关键词
水稻/施氮量/肥料添加剂/产量/累积吸氮量/氮素转运/氮肥利用率Key words
rice/nitrogen application rate/ fertilizer additive/ yield/ accumulative absorbed nitro-gen/ nitrogen translocation/ nitrogen fertilizer use efficiency.分类
农业科技引用本文复制引用
李文军,夏永秋,杨晓云,郭淼,颜晓元..施氮和肥料添加剂对水稻产量、氮素吸收转运及利用的影响[J].应用生态学报,2011,22(9):2331-2336,6.基金项目
国家重点基础研究规划项目(2009CB118603)和中国科学院知识创新工程项目(KZCX2-YW-440)资助. （2009CB118603）
