土壤2012，Vol.44Issue(2)：208-212,5.
促根剂对太湖地区水稻生长、产量及氮素利用的影响
Effects of Fertilizer Additive on Rice Growth, Yield and Nitrogen Utilization in Taihu Lake Region
摘要
Abstract
A field experiment was conducted in Taihu Lake region to study the effect of a fertilizer additive on rice growth, yield and nitrogen use efficiency. The results showed that the fertilizer additive significantly increased rice biomass by 17.95%, 8.63% and 11.09% at heading stage and by 2.16%, 12.13% and 11.47% at filling stage respectively for N application rates of 150, 200 and 250 kg/hm2 respectively. This fertilizer additive also significantly increased root biomass by 7.21% - 27.40% at elongation stage under different N application rates. Yield increase was not as high as biomass, but increased significantly under 250 kg/hm2 treatment, being 5.79%. The fertilizer additive apparently increased rice N uptake, agronomic N use efficiency (AE) and apparent N recovery efficiency (NRE), and the increase was significant under high N application rate, being 7.14%, 33.26% and 10.91% respectively under 250 kg/hm2 treatment.关键词
促根剂/水稻/生长/产量/氮素利用率Key words
Fertilizer additive, Rice, Growth, Yield, N use efficiency分类
农业科技引用本文复制引用
杨晓云,李文军,颜晓元..促根剂对太湖地区水稻生长、产量及氮素利用的影响[J].土壤,2012,44(2):208-212,5.基金项目
国家973计划项目(2009CB118600-973)和中国科学院知识创新工程重要方向项目 (KZCX2-YW-440)资助. （2009CB118600-973）
