Yield and Yield components of hybrid rice as influenced by nitrogen fertilization at different eco-sites
Hybrid rice (Oryza sativa L.) cultivars play an important role in rice production due to its high yield potential.Optimum nitrogen (N) rate is necessary to achieve the maximum yield of hybrid.The main objective of this study was to reveal the responses of yield and yield component of hybrid rice Eryou 107 to different N rates in Nanjing and Taoyuan,a special eco-site.Leaf area index(LAI),dry matter accumulation was also compared.Rice yield showed a quadratic response to N rates at both sites with maximum yields approximately 10 t ha-1 at the 195 kg ha-1 N rate in Nanjing and maximum yield above 18 t ha-1 at the 375 kg ha-1 N rate in Taoyuan.Panicle per m2 was positively linear related to N rate at both sites in both years,while spikelets per panicle showed a quadratic relation.Larger sink size was the primary contributor to higher yields in Taoyuan compared with Nanjing,and panicle per m2 was the main cause.
Hybrid rice Yield and yield components N rate LAI Biomass
Ganghua Li Jun Zhang Lihong Xue Congdang Yang Shaohua Wang Zhenghui Liu Qihong Ling Yanfeng Ding
Key laboratory of Crop Growth Regulation of Ministry of Agriculture,Nanjing Agricultural University, Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China Key laboratory of Crop Growth Regulation of Ministry of Agriculture,Nanjing Agricultural University,
国内会议
扬州
英文
291-291
2012-09-01（万方平台首次上网日期，不代表论文的发表时间）