寒地直播稻氮素积累与转运特征

采用稻花香2号为试验材料进行田间试验,研究寒地直播稻与移栽稻氮素积累、转运及产量差异。结果表明,在抽穗期施入粒肥能够提高直播稻生育后期叶片含氮量和氮积累量,增强光合生产能力。抽穗后,起垄直播稻和免耕直播稻氮同化量比移栽稻高139.9%（P〈0.01）和160.1%（P〈0.01）,氮同化贡献率比移栽稻高133.3%（P〈0.01）和177.8%（P〈0.01）。直播稻生育后期仍能进行氮积累,抽穗后30 d至成熟期起垄直播稻和免耕直播稻氮素积累量分别为2.17和3.81 kg·hm^-2,而移栽稻在抽穗后30 d至成熟期无氮积累。直播稻和移栽稻产量差异不显著。...

Full description

Saved in:
Bibliographic Details
Published in东北农业大学学报 Vol. 46; no. 9; pp. 16 - 22
Main Author 罗盛国 周婷 尹宇龙 王欢 赵广欣 王丽娟
Format Journal Article
LanguageChinese
Published 东北农业大学资源与环境学院,哈尔滨,150030 2015
Subjects
寒地
氮积累
氮转运
水稻
直播
N accumulation
direct-seeded
寒地
cold area
直播
水稻
氮转运
N translocation
氮积累
rice
Online AccessGet full text
ISSN1005-9369

Cover

More Information
Summary:采用稻花香2号为试验材料进行田间试验,研究寒地直播稻与移栽稻氮素积累、转运及产量差异。结果表明,在抽穗期施入粒肥能够提高直播稻生育后期叶片含氮量和氮积累量,增强光合生产能力。抽穗后,起垄直播稻和免耕直播稻氮同化量比移栽稻高139.9%（P〈0.01）和160.1%（P〈0.01）,氮同化贡献率比移栽稻高133.3%（P〈0.01）和177.8%（P〈0.01）。直播稻生育后期仍能进行氮积累,抽穗后30 d至成熟期起垄直播稻和免耕直播稻氮素积累量分别为2.17和3.81 kg·hm^-2,而移栽稻在抽穗后30 d至成熟期无氮积累。直播稻和移栽稻产量差异不显著。
Bibliography:The paper was conducted using Daohuaxiang2 as tested rice variety to study the difference in N accumulation, translocation and yield between direct-seeded and transplanted rice in cold area. Results showed that top dressing N fertilizer at heading stage improved N content and N accumulation of direct-seed- ed rice at late growth stage and enhanced photosynthetic production capacity. After heading, N assimilation of ridge direct-seeded rice and no-tillage direct-seeded rice were 139.9% （P〈0.01） and 160.1% （P〈0.01） higher than that of transplanted rice, and N assimilation contribution rates were 133.3% （P〈0.01） and 177.8% （P〈0.01） higher than that of transplanted rice. N accumulation was still proceeding at the late stage of direct-seeded rice, from 30-day after heading to maturity, the N accumulation of ridge direct-seeded rice and no tillage direct-seeded rice were 2.17 and 3.81 kg-hm^2, respectively, but no N accumulation with transplanted rice. There was no significant difference in yield between direct-see
ISSN:1005-9369