摘要
2003～2004年在江苏省无锡市进行了水稻实地氮肥管理技术(SSNM)试验.结果表明:2003年和2004年,采用农民习惯施肥法(FFP)的氮素吸收利用率分别为33.7%和34.7%;氮肥生产力1 kg氮分别为2.8 kg稻谷和6.7 kg稻谷;氮素转化力1 kg氮分别为8.4 kg稻谷和18.6 kg稻谷.获得相同水稻产量,实地氮肥管理技术的施氮量可比农民习惯施肥法降低38.7%和41.3%;与农民习惯施肥法相比,实地氮肥管理技术的氮素吸收利用率提高13.3个百分点和11.8个百分点;氮素转化力分别提高60.7%和46.8%;氮肥生产力提高117.9%和88.1%.
Site-specific nitrogen management （SSNM） in rice was demonstrated in Wuxi city,Jiangsu province during 2003 - 2004. The results showed that in 2003 and 2004, by adopting farmers＇fertilizer practice （FFP） , recovery efficiency were 33.7% and 34. 7% respectively,fertilizer productivity were 2.8 kg grain per 1 kg N and 6. 7 kg grain per 1 kg N respectively,transforming ability were 8.4 kg grain per 1 kg N and 18.6 kg grain per 1 kg N respectively;while compared to FFP, N rate of SSNM for the same grain yield was decreased by 38.7% and 41.3% respectively,fertilizer-N use efficiency was also increased by 13.3% and 11.8% ,transforming ability was increased by 60. 7% and 46. 8% respectively,fertilizer productivity was increased by 117.9% and 88. 1% respectively.
出处
《江苏农业学报》
CSCD
北大核心
2005年第3期155-161,共7页
Jiangsu Journal of Agricultural Sciences
基金
国家科技攻关计划(2004BA520A12-5)
农业部"948"项目(2003-Z53)
国际水稻研究所合作项目(IR01-01)。
关键词
水稻
实地氮肥管理技术
节氮效果
氮素利用率
rice
site-specific nitrogen management
N-saving effect
fertilizer-N use efficiency
