氮肥后移对超级稻扬两优6号产量及氮肥利用率的影响

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。...

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Published in东北农业大学学报 Vol. 43; no. 7; pp. 57 - 61
Main Author 刘桃菊 唐建军 江绍琳 王润寒 朱冰 程涛 罗真
Format Journal Article
LanguageChinese
Published 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 2012
Subjects
产量
氮肥利用率
氮肥后移
超级稻扬两优6号
氮肥利用率
产量
氮肥后移
超级稻扬两优6号
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ISSN1005-9369

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Summary: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。
Bibliography:23-1391/S
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.
postponing nitrogen fertilizer application; super rice Yangliangyou6; yield; nitrogen using efficiency
LIU Taoju,TANG Jianjun,JIANG Shaolin,WANG Runhan,ZHU Bing,CHENG Tao,LUO Z
ISSN:1005-9369