期刊论文

Ammonia Volatilization Loss and Nitrogen Use Efficiency in Double-cropping Rice Field as Affected by Decreasing Controlled-release Urea Application Level

Xie, G.

中文

中国水稻科学

1001-7216

2018

32

4

387-397

10.16819/j.1001-7216.2018.8004

国家重点研发计划资助项目（2016YFD0201200） 湖南省科技厅重点资助项目（2016JC2032） 湖南省教育厅平台项目（16K040）

本校为第一且通讯机构

【目的】研究连续控释尿素减施对双季稻籽粒产量、N肥利用率和NH_3挥发损失的影响,以期为水稻稳产条件下减少双季稻田氮素损失提供理论依据和技术方法。【方法】以中早39(早稻)和泰优390(晚稻)为材料,设置不同控释尿素N用量的等N量控释尿素(CRU_1)、控释尿素减N 10%(CRU_2)、控释尿素减N 20%(CRU_3)、控释尿素减N 30%(CRU_4)以及尿素(U)和不施肥对照(CK)的6个处理,采用密闭室间歇通气法监测双季稻田NH_3挥发特征,同时测定水稻产量和N含量。【结果】普通尿素(U)处理和控释尿素(CRU)处理施基肥和分蘖肥后早稻NH_3挥发发生在施肥后的8~9 d内,峰值分别于第1~2天和第2~4天出现;晚稻NH_3挥发发生在施肥...

[Objective] The research aims to reveal the effects of controlled-release urea(CRU) application in successive years on double-cropping rice yield, nitrogen use efficiency (NUE), and ammonia (NH 3 ) volatilization loss, and to lay a theoretical basis and develop a new method for reducing nitrogen losses in paddy field while stabilizing grain yield. [Method] There were six treatments including zero-N (CK), urea (U) and four CRU levels (CRU1, CRU 2, CRU 3, CRU 4, 0, 10%, 20% and 30% nitrogen reduction of CRU) in cultivars Zhongzao 39 for early ric...