氮肥用量和栽插密度对吉粳513产量及品质的影响  

Effects of Different Planting Density and Nitrogen Application Rate on Yields and Rice Quality Characteristics of 'Jijing 513'

作　　者：杨春刚[1] 王金明[1] 邱志刚[1] 郭桂珍[1] 

机构地区：[1]吉林省农业科学院水稻研究所,吉林公主岭136100

出　　处：《东北农业科学》2017年第2期6-9,共4页Journal of Northeast Agricultural Sciences

基　　金：科技部国家星火计划(2015GA660005);吉林省重点科技成果转化项目(20150307027NY);吉林省科技厅重点项目(20150204018NY)

摘　　要：以水稻新品种吉粳513为供试品种,采用二因素裂区试验设计,研究不同氮肥用量(纯N 150、200、250 kg/hm^2)和栽插密度(33.33万、22.22万、16.67万穴/hm^2)对水稻产量和品质的影响。结果表明:施氮量和栽插密度显著影响吉粳513的有效穗数,而对穗实粒数、千粒重无显著影响。在施氮量为200 kg/hm^2和插秧密度为22.22万穴/hm^2时,水稻产量最高(9.43×103kg/hm^2),显著高于其他处理;同时,在此条件下,降低了垩白粒率和垩白度,提高了蛋白质含量,其品质达到最佳。To investigate the effect of nitrogen application rate and planting density on rice grain yield and qualitycharacteristics, we used japonica rice cultivar ＇Jijing 513＇as the test material in this study. Split plot experimentswith N application rate（N 150, 200 and 250 kg/ha） as main plot and planting density（33.33 ×10^4,22.22 ×10^4 and 16.67 ×10^4 seedlings/ha） as sub-plot were carried out. The results showed that both N application rate and plantingdensity had significant effects on the effective panicles of the japonica rice cultivar ＇Jijing 513＇. The combinationof N application rate of 200 kg/ha and planting density of 22.22 ×10～4 seedlings/ha led to the highest yield（9.43×10～3kg/ha）, which was significantly higher than other treatments. Meanwhile, these were proper conditions to decreasethe chalkiness and increase the protein content of grain.

关 键 词：水稻 氮施用量 插秧密度 产量 稻米品质 

分 类 号：S511.05[农业科学—作物学]