摘要
通过丰优22不同播栽期、密度、施肥量、肥料运筹等试验,研究分析了丰优22在早播早栽、密度22.5万穴/hm2、施N量225 kg/hm2、基肥∶分蘖穗肥∶保花肥分别占施N量比例为6∶3∶1的最佳栽培条件下的物质生产、物质运转及产量构成因素。结果表明:丰优22库容较大,填库能力强;尤其是在抽穗至成熟期,其光合作用能力强,粒叶比高,光合产物多;花后光合产物对籽粒充实的贡献大,源库间流的通畅性好,库、源、流协调。
Through field trials regarding the sowing and transplanting date,planting density,application rate of fertilizer and fertilization mode of Fengyou 22,the best cultivation conditions of this hybrid indica rice variety were obtained as follows: early sowing and early transplanting,planting density being 225000 sockets/hm2,applying nitrogen fertilizer 225 kg/hm2,and basal fertilizer,top dressing at tillering stage and fertilizer for the formation of young ear accounting for 60%,30% and 10% of total nitrogen application rate,respectively.Under the above optimum cultivation conditions,the matter production,translocation of carbohydrate and yield components of Fengyou 22 were studied and analyzed.The results showed that Fengyou 22 was characterized by large sink capability and strong sink-filling ability,better plant type for light transmittance,leaf type and chlorophyll content for sunlight Absorption,greater photosynthetic ability especially at the grain-filling stage,higher ratio of grains to leaf area.Therefore,for Fengyou 22,more photosynthate was translated to grains after flowering,and the flow from the source to the sink was efficient,and the sink,source and flow were in balance and coordination.
出处
《江西农业学报》
CAS
2010年第9期29-32,共4页
Acta Agriculturae Jiangxi
基金
科技部农业科技成果转化资金项目"优质杂交籼稻组合丰优22
粳稻品种扬辐粳7号中试与示范"(2008GB2C100105)
