摘要
为探明薄壳山核桃(Carya illinoinensis)砧木容器苗高度、地径、地上鲜重、地下鲜重、地上干重、地下干重、根冠比、根重比、高径比、含水率、总生物量、苗木质量指数、根长、根表面积、根体积等16个性状间的相互关系,采用相关分析、逐步回归线性分析和曲线分析法,建立了苗木高度与地上干重二次方曲线最优拟合方程为Y=11.740+2.231X+1.880X2,苗木地径与总生物量二次方曲线最优拟合方程为Y=3.143+0.127X+0.002X2,苗木总生物量与地上干重、地下干重二元线性最优拟合方程为Y=-0.002+1.001X1+0.993X2,苗木质量指数与地下干重、含水率二元线性最优拟合方程为Y=0.131+0.026X1-0.003X2,苗木根长与根表面积、高度、地上鲜重三元线性最优拟合方程为Y=-618.227+1.795X1+62.056X2-165.366X3。充分运用最优拟合方程能够很好地预测和指导薄壳山核桃砧木容器苗培育和生产造林效果。
In order to find out the relationship between seedling height,ground diameter,fresh weight aboveground,fresh weight un⁃derground,dry weight aboveground,dry weight underground,root-crown ratio,root-to-crown ratio,height-diameter ratio,moisture content,total biomass,seedling mass index,root length,root surface area,root volume,using correlation analysis,stepwise regres⁃sion linear analysis,curve analysis,the optimal fitting equation of quadratic curve between seedling height and aboveground dry weight was Y=11.740+2.231X+1.880X2,the optimal fitting equation of quadratic curve of seedling ground diameter and total biomass Y=3.143+0.127X+0.002X2 was established,the double linear optimal equation of total biomass and aboveground dry weight and under⁃ground dry weight Y=-0.002+1.001X1+0.993X2 was established,a linear optimal fitting equation of seedling mass index,optimal equa⁃tion of mass index of seedling and binary linear fit of dry weight and moisture content of underground Y=0.131+0.026X1-0.003X2 was established,the ternary linear optimal fitting equation of seedling root length,root surface area,height and fresh weight aboveground was Y=-618.227+1.795X1+62.056X2-165.366X3.The best fitting equation can be used to predict and guide the seedling cultivation and afforestation effect of small shell pecan stock container.
作者
杜洋文
邓先珍
李希国
DU Yang-wen;DENG Xian-zhen;LI Xi-guo(Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization/Hubei Collaborative Innovation Center for the Characteristic Resources Exploitation of Dabie Mountains,Huanggang Normal University,Huanggang 438000,Hubei,China;Hubei Academy of Forestry,Wuhan 430075,China;Tongcheng County Forestry Bureau,Tongcheng 437400,Hubei,China)
出处
《湖北农业科学》
2021年第16期113-116,121,共5页
Hubei Agricultural Sciences
基金
经济林木种质改良与资源综合利用湖北省重点实验室大别山特色资源开发湖北省协同创新中心开放基金项目(201930603)
中央财政林业科技推广项目(鄂[2019]TG12号)。
作者简介
杜洋文(1981-),男,四川南充人,副研究员,硕士,主要从事经济林育种与高效栽培技术研究,(电话)13627112408,(电子信箱)lulang719820@163.com;通信作者:邓先珍,主要从事经济林良种培育与高效栽培技术研究,(电子信箱)646412397@qq.com。
