无患子一年生播种苗生长规律观察分析  

Analysis of the Growth Rule of one-year Old Seedlings of Sapindus mukorossi

作　　者：韦继波 张亚洲 付品 

机构地区：[1]贵州省林业科学研究院,贵阳550005

出　　处：《贵州林业科技》2016年第2期18-22,共5页Guizhou Forestry Science and Technology

基　　金：贵州省科技厅社发项目<无患子培育与开发利用技术研究>(合同编号:黔科合SY[2013]3153号)

摘　　要：通过对贵州乡土树种无患子实生苗生长规律的研究,经定期观测和回归分析,模拟实生苗苗高、地径和生长时间的相关关系,并建立数学模型,结果表明:无患子实生苗生长可划分为出苗期、缓慢生长期、速生期、生长后期和休眠期5个时期。苗高、地径的生长曲线呈"S"形,地径生长要滞后于苗高生长。苗高、地径与生长时间呈三次多项式函数关系,关系式分别为:Y=26.306-0.880X+0.11X^2-2.603×10^(-5)X^3,Y=3.394-0.092X-0.001X^2-2.578×10^(-6)X^3拟合模型能较准确地估算出无患子实生苗某一生长时间的苗高和地径。In the study on the growth rule of seedlings of one native tree species in Guizhou- Sapindus mukorossi,by the periodic observation and regression analysis,a mathematical model was established by the simulation of the height of seedling correlation betweenh the height,ground diameter and growing period. The results showed that the growth of Sapindus mukorossi seedlings from the core could be divided into five periods,namelyseedling,slow growth,fast- growth,late growth and dormancy. Seedling height and ground diameter followed an＂S＂curve increase,but the ground diameter growth lagged behind the height growth. The functional relation between seedling height,ground diameter and growing period presented a cubic equation,which is Y=26.306-0.880X＋0.11X2-2.603×10（-5）X3,Y=3.394-0.092X-0.001X2-2.578×10（-6）X3. And the fitting model could more accurately estimate the seedling height and ground diameter of a growing period of Sapinudus mukorossi.

关 键 词：无患子 实生苗 数学模型 

分 类 号：S723.131[农业科学—林木遗传育种]