摘要
研究了氮磷钾肥的施用对杂交水稻广两优476生长性状及产量构成因子的影响。结果表明氮对广两优476的分蘖能力影响十分明显,尤其在前期生长,对株高的影响则表现在中后期;磷对分蘖有促进作用,但对株高影响并不明显;施钾能明显促进分蘖和增加株高,但与施钾水平没有直接关系。在产量构成因子方面,氮和钾的影响比磷要大,主要是通过影响有效穗数和结实率来影响产量。适宜的施肥量为N 120～240、P2O5 60～90、K2O 105～150 kg/hm2。
The influence of nitrogen,phosphorus and potassium fertilizer on growth character and yield component factors of hybrid rice Guangliangyou 476 was studied.The results showed that N had obvious effect on tiller ability of Guangliangyou 476,especially in early growth stage;while its effect on strain height was shown in the late growth period.P could promote tiller of rice but did not affect strain height very much.K could improve tiller and height of rice strain,but the improvement had no correlation with applying amount.N and P affected the yield mainly through effective panicle number and seed setting rate;while K had little effect on yield.Recommended applying amount of fertilizer was N 120～240,P2O5 60～90,K2O 105～150 kg/hm2.
出处
《湖北农业科学》
北大核心
2011年第23期4797-4800,共4页
Hubei Agricultural Sciences
基金
农业科技成果转化资金项目(2010GB2D100297)
国家重点基础研究发展计划项目(2007CB109308)
"十一五"科技支撑计划项目(2008BADA4B08)
国际植物研究所(IPNI)中国项目部项目(IPNI-Hubei-38)
国家水稻产业技术体系项目(CARS-01-63)
关键词
杂交水稻广两优476
施肥
生长性状
产量构成因子
hybrid rice Guangliangyou 476
fertilization
growth character
yield constitute factor
