摘要
对荔浦芋产量与13个土壤养分指标进行了主因子分析。结果表明:荔浦芋产量与全氮、有效氮以及有机质极显著负相关,与有效锌、有效铁、有效铜、有效硼极显著正相关。从土壤养分中提取出了4个主因子,第1主因子主要由全磷、全钾、有效磷以及有效锰决定;第2主因子是全氮、有效氮、有机质的综合反映;第3主因子主要由有效锌、有效铜、有效硼决定;第4主因子主要反映了pH、有效钾、有效铁3个肥力养分指标。其中第2主因子对产量影响最大,与产量的相关系数为-0.651**。对荔浦芋产量与主因子进行回归分析,得到主因子回归方程:y=-0.651×Z2-0.187×Z4。控制无机氮肥的施用,增施有机肥,在施加碱性肥料的同时,补充叶面微肥,有利于产量的提高。
The principal factor analysis was used to analyze soil nutrient indices affecting Lipu Taro yield. The results showed that Lipu Taro was significantly and positively correlated with total N, available N and organic matter, significantly and negatively with available Zn, Cu, Fe and B. The first principle factor was characterized by total P, total K and available P; the second principle factor by total N available N and organic matter; the third principle factor by available Zn, Cu and B; the fourth principle factor by pH, available K and Fe. The correlation coefficient between Lipu Taro yield and the second principle was -0.651＂＊, which affect the yield mostly. The regression equation among Lipu Taro yield and principle factors was y=-0.651 × Z2-0.187 ×Z4. Therefore, reducing inorganic nitrogenous fertilizer in soil and increasing alkaline fertilizer and foliar fertilizer are in favor of Lipu Taro yield.
出处
《土壤通报》
CAS
CSCD
北大核心
2012年第1期98-101,共4页
Chinese Journal of Soil Science
基金
广西桂林市农业发展办公室项目(D.11-0112-08-401)资助
关键词
荔浦芋
产量
土壤养分
相关性分析
因子分析
Lipu Taro
Yield
soil nutrients
Correlation analysis
Factor analysis
