高寒阴湿区陇薯6号氮磷用量及栽培密度配套模式研究  

Study on Matching Mode of Quantity of Nitrogen and Phosphorus Application and Cultivation Density for Longshu No.6 in Cold and Damp Areas

作　　者：陆立银[1] 谢奎忠[1] 陈富[1] 

机构地区：[1]甘肃省农业科学院马铃薯研究所,甘肃兰州730070

出　　处：《农业系统科学与综合研究》2009年第4期437-440,共4页System Sciemces and Comprehensive Studies In Agriculture

基　　金：科技部农转资金项目(2007GB2G100056);农业部跨越计划项目(2008)

摘　　要：通过两年的试验研究,利用二次通用旋转设计原理建立了氮肥(x1)、磷肥(x2)和栽培密度(x3)与陇薯6号产量(y)的回归方程,对方程进一步分析表明,各因素对产量影响的大小顺序是氮肥>密度>磷肥。陇薯6号产量大于39t/hm2的栽培方案是:施纯氮122.56 t/hm2~177.50 t/hm2、磷102.74 t/hm2~167.26 t/hm2,栽培密度为52 861株/hm2~60 580株/hm2(行距60cm,株距27.5cm^31.5cm)。图4,表4,参7。A mathematic model, Y = 43. 7391 ＋ 0.16467 X3 - 2. 8378 X1^2 - 1.4274X2^2 - 2.6231 X^2, with the application of nitrogen （ X1 ）, phos- phorus（X2）, planting density（ X3 ）and the yeild of Longshu 6 （Y） had been built by the quadratic general rotational combination design based on two year＇s study.The further analysis results showed that the order that influenced the yield is nitrogen（ X1 ） 〉 planting density（ X3） 〉 phosphorus（X2） .The cultivation scheme that the yield is higher than 39 t/hm^2 is pure N 122.56 kg/hm^2 - 177.50 kg/hm^2 ,P205102.74 kg/hm^2 - 167.26 kg/hm^2 ,52 861 - 60 580 plant/hm^2（row spacing 60 cm,plant spacing during 27.5 cm - 31.5cm）.

关 键 词：高寒阴湿区 马铃薯 陇薯6号 肥料 栽培密度 

分 类 号：S532[农业科学—作物学]