不同直播密度和施氮量对油研九号产量及品质的影响  

Effect of Direct Sowing Density and Amount of Applying Nitrogen Fertilizer on Yield and Quality of Youyan 9

作　　者：任廷波[1] 赵继献[1] 郑治洪[1] 

机构地区：[1]贵州省油料科学研究所,思南565109

出　　处：《贵州农业科学》2004年第4期23-26,共4页Guizhou Agricultural Sciences

基　　金：贵州省科学技术厅攻关项目 [黔科合成字 2 0 0 2 (90 1 8) ]

摘　　要：试验结果表明 ,不同密度和施氮量、密度与施氮量的互作效应对产量的影响均达极显著水平。产量与密度间呈一元二次抛物线关系 ,与施氮量间呈显著正相关 ;产量和群体有效角果数随施氮量的增加而增加 ;单株有效角果数随施氮量的增加而增加 ,随密度增加而减少 ;施氮量对菜籽含油率、蛋白质含量的影响较为明显 ,对硫甙和芥酸影响小 ,密度对含油率的影响达到显著水平 ,对蛋白质、硫甙和芥酸的含量无明显影响 ,高产的同时能够保证品质。本试验条件下油研九号获高产的直播密度为 2 9.0 9× 1 0 4～ 33× 1 0 4株 /hm2 ,施氮量为 1 80kg/hm2 。The study result showed that effect of different density and amount of applying nitrogen fertilizer,interaction of (density) and amount of applying nitrogen fertilizer on yield of Youyan 9 all reached very significant level .There is parabolical curve correlation between yield and density, very positively significant correlation between yield and amount of applying nitrogen fertilizer.Yield and population pod number increased with amount of applying nitrogen fertilizer, pod number per single plant increased with (amount) of applying nitrogen fertilizer, pod number per single plant decreasecl with amount of density increased. Effect of (amount) of applied nitrogen fertilizer on oil content and protein were obvious, but no effect on erucic acid and glucosinolate. Effect of different density on oil content reached significant level, but no effect on protein, erucic acid and glucosinolate. When high yield is obtained, quality can be also keeped.Under this test circumstance, direct sowing cultivation density of obtaining high yield for Youyan 9 was 29.09×10^(4)～33×10^(4)plant/ha, amount of applying nitrogen fertilizer was 180kg/ha.

关 键 词：油菜 油研9号 品种 直播栽培 施氮量 密度 

分 类 号：S565.4[农业科学—作物学]