施氮量与栽插密度对超级晚稻“天优华占”产量的影响  

Effects of Nitrogen Application Amount and Planting Density on Yield of Super Late Rice Tianyouhuazhan

作　　者：林洪鑫[1,2] 潘晓华[1] 石庆华[1] 

机构地区：[1]江西农业大学/作物生理生态与遗传育种教育部重点实验室/农业部双季稻生理生态与栽培重点开放实验室,江西南昌330045 [2]江西省农业科学院土壤肥料与资源环境研究所,江西南昌330200

出　　处：《江西农业大学学报》2010年第3期425-430,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家"十一五"科技支撑计划项目(2006BAD02A04);江西省科技厅重点攻关项目(20051B020010)

摘　　要：以超级晚稻＂天优华占＂为材料,采用裂区设计,研究栽插密度与施氮量对其产量的影响。结果表明：施氮量对产量及4个产量因素的影响达极显著水平。栽插密度对产量、有效穗数和每穗粒数的影响达显著水平。施氮量与栽插密度互作对有效穗数和每穗粒数的影响达极显著或显著水平。在0~210 kg/hm2施氮内,产量、有效穗数、总吸氮量、生物量、最高茎蘖数、分蘖穗率和生产100 kg籽粒需N量随施氮量的增加而增加,而成穗率随之下降。在18×104~30×104蔸/hm2栽插密度内,有效穗数、总吸氮量、生物量、最高茎蘖数和生产100 kg籽粒需N量随栽插密度的增加而增加,成穗率和分蘖穗率随之下降。分蘖穗率及生产100 kg籽粒需N量与产量呈极显著线性相关,成熟期总吸氮量和生物量与产量呈抛物线关系。试验表明,施氮210 kg/hm2与密度24×104~30×104蔸/hm2有利于实现＂天优华占＂的高产。Using split-plot design,the effects of the nitrogen application amount and planting density on the yield were studied with double-cropping super late rice Tianyouhuazhan.The results showed that the grain yield and its 4 components were influenced significantly（P0.01） by nitrogen application,and the grain yield,effective panicle and spikelets per panicle were influenced significantly（P0.05） by planting density.The interaction of nitrogen application amount and planting density had very significant influence on effective panicle（P0.01） and spikelets per panicle（P0.05）.The grain yield,biomass,total N uptake,nitrogen requirement for 100kg grain production,max.No.of tillers,tiller panicle rate and effective panicle were increased,with increased nitrogen application at the range of 0 to 210kg/hm2,but the effective panicle forming

关 键 词：超级晚稻 天优华占 施氮量 栽插密度 产量 

分 类 号：S511.01[农业科学—作物学]