氮素施用比例对双季超级稻产量和氮素吸收、利用的影响  

Effect of the nitrogen fertilizer application ratio on the super early and late rice yield and nitrogen using efficiency

作　　者：陈爱忠[1,2] 潘晓华[1] 吴建富[1] 石庆华[1] 杨上勤 

机构地区：[1]教育部作物生理生态与遗传育种重点实验室/农业部双季稻生理生态与栽培重点开放实验室/江西省作物生理生态与遗传育种重点实验室/江西农业大学,江西南昌330045 [2]湖南省冷水江市农业局,湖南冷水江417500 [3]江西省进贤县三里乡农技站,江西进贤331700

出　　处：《中国土壤与肥料》2011年第3期40-44,共5页Soil and Fertilizer Sciences in China

基　　金：国家"十一五"科技支撑计划项目(2006BAD02A04);江西省科技攻关项目(20051B020010)

摘　　要：以超级早、晚稻品种淦鑫203和淦鑫688为材料,研究了氮素基蘖肥:穗肥的施用比例对产量及氮肥利用率的影响。结果表明,在早稻180 kg/hm2和晚稻232.5 kg/hm2的施氮水平下,早稻在N(8:2)和N(7:3)、晚稻在N(6:4)时的生物产量、稻谷产量、总吸氮量、氮肥利用率最高。Effects of the nitrogen basic-tiller and panicle fertilizer application ratio on the yield and nitrogen using efficiency were studied with super early and late rice Ganxin 203 and Ganxin 688 as materials.The results showed that in the early rice 180 kg/hm2 and late rice 232.5 kg/hm2nitrogen level,the N（8：2） and N（7：3）treatment had the highest biomass,grain yield,total N uptake and N using efficiency in early rice,while the N（6：4） treatment had the highest biomass,grain yield,total N uptake and N using efficiency in late rice.

关 键 词：超级早稻、超级晚稻 施氮时期 产量 氮素吸收利用 

分 类 号：S511.42[农业科学—作物学]