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5号产量(y)的回归方程:y=45.70958+2.18835x3-1.89344x12-2.55671x22-3.19346x32,对方程进一步分析表明,各因素对产量影响的大小顺序是密度>磷肥>氮肥。陇薯5号产量大于40 t.hm-2的栽培方案为施N116.7 kg.hm-2~183.4kg.hm-2,施P2O51 10.2 kg.hm-2~1 59.8 kg.hm-2,栽培密度为54 895株.hm-2~61 878株.hm-2(行距60cm,株距27.0cm^30.4cm)。图4,表4,参5。
A mathematic model,y = 45. 70958 ＋ 2. 18835x3 - 1. 89344x1^2 - 2. 55671x2^2 - 3. 19346x3^2, for the application of nitrogen （x1 ）, phosphorus（x2）, planting density（x3 ）and the yeild of Longshu No. 5 （y） had been built by the quadratic general rotational combination design after two year＇ s research results.. The further analysis shows that the order influencing factors on the yield is planting density（x3 ） 〉 phosphorus （x2 ） 〉 nitrogen （x1）. The cultivation scheme that the yield is more than 40 t. hm-2 is pure N 116. 7 kg. hm -2 _ 183.4 kg· hm^ -2 P2O5 110. 2 kg· hm^ -2 - 159. 8 kg· hm^ -2 54895 plant· hm^ -2 - 61878 plant· hm^ -2 （ Row spacing 60 cm, plant spacing during 27.0 cm -30. 4cm）.
出处
《农业系统科学与综合研究》
CSCD
2010年第2期236-239,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)
关键词
高寒阴湿区
马铃薯
陇薯5号
肥料
栽培密度
cold and damp areas
potato
Longshu No. 5
fertilizer
cultivated density
