氮肥后移对超级稻扬两优6号产量及氮肥利用率的影响  

Effect of postponing nitrogen fertilizer application on yield and nitrogen using efficiency of super rice Yangliangyou6

作　　者：刘桃菊[1] 唐建军[1] 江绍琳[1] 王润寒[1] 朱冰[1] 程涛[1] 罗真[1] 

机构地区：[1]江西农业大学农学院,江西省作物生理生态与遗传育种重点实验室,南昌330045

出　　处：《东北农业大学学报》2012年第7期57-61,共5页Journal of Northeast Agricultural University

基　　金：国家自然科学基金项目(31160252);江西省教育厅自然科学项目(GJJ09174)

摘　　要：在基础地力和施氮量相同条件下,研究氮素基蘖肥和穗粒肥不同运筹方式对超级杂交水稻品种扬两优6号产量和氮肥利用率的影响。结果表明,氮肥适当后移可以提高水稻产量和氮肥利用效率,5个处理籽粒产量由高到低顺序是:6 4>5 5>7 3>10 0>CK;氮肥农学利用率为:6 4>5 5>7 3>10 0;氮肥表观利用率为:6 4>7 3>5 5>10 0,说明基蘖肥与穗粒肥比例过高或过低均不利于产量和氮肥利用率提高,分次施用优于一次性施用。由试验可知,6 4处理籽粒产量和氮肥利用率均最高。Under the condition of the same soil fertility and amount of nitrogen fertilizer,the effects of different ratios of nitrogen basic-tiller and panicle fertilizer application on the super rice Yangliangyou6 yield and nitrogen using efficiency were studied.The results showed that proper postponing nitrogen fertilizer application could improve rice yield and nitrogen using efficiency,the order of the grain yield from high to low for five treatments was 6：45：57：310：0CK;the nitrogen agronomic efficiency was 6：45：57：310：0;and the nitrogen apparent recovery efficiency was 6：47：35：510：0,suggesting that too high or too low ratio of nitrogen basic-tiller and panicle fertilizer application was unfavourable for high yield and nitrogen using efficiency,6：4 was the best,and several fertilizer applications were better than one time application.

关 键 词：氮肥后移 超级稻扬两优6号 产量 氮肥利用率 

分 类 号：S511[农业科学—作物学]