首页 | 本学科首页   官方微博 | 高级检索  
     检索      

桉树生长与土壤因子间的回归分析
引用本文:陈如英,陈宗林.桉树生长与土壤因子间的回归分析[J].青海农林科技,2006(4):14-17.
作者姓名:陈如英  陈宗林
作者单位:1. 福建生态工程学校,福建,福州,350007
2. 厦门市集美灌口林业站,福建,厦门,361023
摘    要:应用相关分析和逐步回归分析法对闽南山地桉树生长与土壤因子间的关系进行研究,结果表明:闽南山地尾巨桉DH32-29与土壤中大部分因子存在显著或极显著的相关关系,其逐步回归方程为:Y=11.811 0.033X1-4.0317X3-0.144X4 1.080X6 0.636X8。经检验回归方程的F值为10.730,相关系数R为0.90400,均达到极显著水平,在显著性水平a=0.05的条件下,估计精度达89.67%。说明所拟合的回归方程精度较高,可靠性较强;筛选出影响按树生长的土壤主导因子有有机质、有效磷和土壤密度,这与现实生产实际相吻合。

关 键 词:桉树  相关分析  土壤因子  逐步回归  回归方程
文章编号:1004-9967(2006)04-0014-04
收稿时间:2006-07-25
修稿时间:2006年7月25日

Regression Analysis on Eucalyptus between its Growth and Soil Factors
CHEN Ru-ying,CHEN Zong-lin.Regression Analysis on Eucalyptus between its Growth and Soil Factors[J].Science and Technology of Qinghai Agriculture and Forestry,2006(4):14-17.
Authors:CHEN Ru-ying  CHEN Zong-lin
Institution:1. Fujian Ecosystem Engineering School, Fuzhou Fujian 350007, China; 2. Ji-mei Guan-kou Forestry Station, Xiamen Fujian 361023, China
Abstract:The relationship between eucalyptus growth and soil factors in mountain region the southern of Fujian were analyzed and studied by the methods of correlation and stepwise regression analysis.The results showed there were correlation relationship of significance or extremely significance most parts of factors of Ju-wei eucalyptus DH 32-29 in the southern mountain region of Fujian.Its stepwise regression equation was:Y=11.811 0.033X_1-4.0317X_3-0.144X_4 1.080X_6 0.636X_8.Its F was 10.730 by test.Related coefficient was 0.904.There was extremely significance level.Its estimate accuracy was 89.67% under a=0.05 conditions.It was showed regression equation accuracy was high,and credibility was stronger.Main factors of influence eucalyptus growth organic material,available phosphorus and soil density were selected.They were coiniciding with reality production.
Keywords:Eucalyptus  Correlation analysis  Soil factors  Stepwise regression  Regression equation
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号