黑龙江八一农垦大学学报Issue(3)：1-6,6.DOI:10.3969/j.issn.1002-2090.2015.03.001
基蘖氮肥施用时期对寒地水稻产量及氮肥利用率的影响
Timing of Applied Basic and Tillering Nitrogen on Yield and Fertilizer-N Use Efficiency of Rice in Cold Area
摘要
Abstract
This study investigated the effects of the applied nitrogen at different stages on yield and fertilizer-N use efficiency of rice. The field experiment was conducted in two growing seasons(2011 and 2012)by using rice cultivar kongyu 131 and the randomized block design at 856 farm of Heilongjiang province. The results indicated that under the normal application of basal N rate,compared to applying tillering fertilizer after striking root stage (T2), the application of tillering fertilizer at transplanting stage(T3) substantially enhanced ear-bearing tiller rate of rice by 9.09%(P<0.05),increased dry matter accumulation of plant at mature stage by 4.50%-15.4%,reduced light transmittance after heading by 11.6%(P<0.05),increased yield of rice by 0.12-0.17 t·km-2,and significantly enhanced fertilizer-N recovery efficiency by 12.3%-12.5%(P<0.05). Compared to basal N rate and tillering fertilizer after striking root stage(T4),when the application was free of basal N rate,the application of basal N rate and tillering fertilizer at transplanting stage(T5)increased the dry matter accumulation of plant at mature stage by 4.67%-6.51%,increased the yield of rice by 0.12-0.49 t·km-2,and significantly enhanced fertilizer-N recovery efficiency by 11.0%-11.1%(P<0.05). Overall,the results of this study demonstrated that T3 was higher effective pattern than other treatments,and T5 was higher effective pattern than T4.关键词
水稻/寒地/氮肥施用时期/氮肥利用率/产量Key words
rice/cold area/period of nitrogen application/N use efficiency/yield分类
农业科技引用本文复制引用
孙文宏,纪伟波,陈秋雪,张明聪..基蘖氮肥施用时期对寒地水稻产量及氮肥利用率的影响[J].黑龙江八一农垦大学学报,2015,(3):1-6,6.基金项目
国家“十二五”科技支撑计划项目（2012BAD20B04）。 （）
