摘要
为明确不同氮肥运筹下水稻产量形成的调控机制,提高水稻生产的氮素利用效率、保持水稻的可持续发展,针对盐丰47和盐粳188水稻品种,采用不同氮肥水平(0kg/hm2,165kg/hm2,210kg/hm2,255kg/hm2)和不同施肥比例(基蘖肥∶穗粒肥分别为8∶2、7∶3和6∶4)进行裂区设计试验,对水稻生长动态、氮素利用及产量进行研究。结果表明:盐丰47和盐粳188在施纯氮210kg/hm2、基蘖肥与穗粒肥比为6∶4及7∶3时处理效果较好,具有适宜的有效穗数,总吸氮量和氮素回收率高。
The rice growth dynamic,nitrogen utilization and yield of Yanfeng 47 and Yanjing 188 under 4different nitrogen levels（0kg/hm2,165kg/hm2,210kg/hm2 and 255kg/hm2）and different application proportion（8∶2,7∶3and 6∶4of basal fertilizer-panicle fertilizer ratio）were analyzed by the split plot design to explore the regulatory mechanism of rice yield formation under different nitrogen application models,increase nitrogen utilization efficiency in rice production and to maintain rice sustainable development.Results：Yanfeng 47 and Yanjing 188 both have suitable effective spikes,higher total nitrogen uptake and nitrogen recovery under 210kg/hm2 of pure nitrogen with 6∶4or 7∶3of basal fertilizer-panicle fertilizer ratio.
出处
《贵州农业科学》
CAS
2015年第9期66-71,共6页
Guizhou Agricultural Sciences
关键词
水稻
氮肥运筹
物质积累
产量
rice
nitrogen application model
material accumulation
yield
