作物学报2011，Vol.37Issue(12)：2261-2268,8.DOI:10.3724/SP.J.1006.2011.02261
氮肥运筹对稻茬免耕油菜农艺性状及产量的影响
Effects of Nitrogen Application on Agronomic Traits and Yield of Rapeseed in No-tillage Rice Stubble Field
摘要
Abstract
To investigate the effects of various nitrogen applications adapted to direct-seeding rapeseed on agronomic performances and grain yields in no-tillage rice stubble field, we used the rapeseed cultivar Huaza 9 in plot experiments under the no-tillage direct-seeding and transplanting cultivations during 2006-2010. It was observed that a top-dressing applied during the duration of stem extension increased grain yield under various base manure application rates. When two top-dressing were used during the growth of the rapeseed plants, effects of fertilizer applications on yield formation depended on application date and amount of base manure. When base manure application rate was 112.5 kg N ha"1, the high grain yields were obtained with the top-dressing applied for the stem extension and flowering, respectively. However, in the condition that the base manure application rate was 202.5 kg N ha"1, the high grain yields were gained when the mid-December fertilizer and stem-extension fertilizer were applied. On the other hand, when the base manure and top-dressing fertilizers were setting at the ratio of 5:5, the high grain yields were observed for both direct-seeding and transplanting rapeseeds, independent of the amount of nitrogen application. The results also showed that the mentioned four modes for nitrogen application significantly decreased the amount of N-fertilizer and increased the grain yields under both no-tillage direct-seeding and transplanting cultivations.关键词
油菜/稻茬免耕/氮肥运筹/产量Key words
Rapeseed/No-tillage paddy rice field/Nitrogen application/Yield引用本文复制引用
韩自行,傅廷栋,张长生,王积军,张冬晓,汤松,陈爱武,周广生,胡立勇,吴江生..氮肥运筹对稻茬免耕油菜农艺性状及产量的影响[J].作物学报,2011,37(12):2261-2268,8.基金项目
本研究由国家科技支撑计划项目(2010BAD01B09)和国家油菜现代产业技术体系项目(NYCYTC-00510)资助. （2010BAD01B09）
