不同薄麻壳泡核桃优株实生苗年生长节律初报  

A Preliminary Report on the Annual Growth Rhythm of Different J uglans sigillata Superior seedlings

作　　者：陈兰 许杰 冷天凤 田小琴 陈骏 CHEN Lan;LENG Tian-feng;TIAN Xiao-qin;CHEN Jun(Guizhou Walnut Research Institute.Guiyang,Cuizhou550005;Guizhou Academy of Forestry,Guiyang Guizhou 550005)

机构地区：[1]贵州省核桃研究所,贵阳550005 [2]贵州省林业科学研究院,贵阳550005

出　　处：《贵州林业科技》2020年第2期18-23,共6页Guizhou Forestry Science and Technology

基　　金：贵州省林业厅科研项目(合同编号:黔林科合[2017]04号);贵州省科技厅项目(合同编号:黔科合基础[2018]1092号);贵州省林业科研项目[黔林科合J(2017)08];贵州省科技厅计划项目(合同编号:黔科合人才平台[2019]5202号);贵州省科技厅项目(合同编号:黔科合成果[2018]4320)。

摘　　要：为了解5个薄麻壳泡核桃优株的苗期生长规律,对一年生薄麻壳泡核桃实生苗苗高和地径开展定期测定和分析,并利用logistics方程对苗高和地径生长曲线作年生长动态拟合,估算生长参数,确定Logistics方程。结果表明:各优株苗高、地径的生长呈“慢-快-慢”的“S”型曲线;不同优株苗期生长节律差异性显著,大体分为慢生期、速生期和渐进停滞期三个阶段,各优株苗高、地径生长不同步。In order to understand the growth patterns of seedling stage for five Juglans sigillata varieties,the height and ground diameter of one-year-old Juglans sigillata seedlings were determined and analyzed regularly,and the annual growth curve of height and ground diameter was fitted with the logistics equation to estimate the growth parameters and deter mine the logistics equation.The results showed that the growth of the height and ground diameter of each superior seedling showeda"S"type curve of"slow-fast-slow",and the growth rhythm of each superior seedling was significantly different,which was generally divided into three stages:slow-growth stage,rapid-growth stage and gradual stagnation stage,and the growth of the height and ground diameter of each superior seedling was not synchronous.

关 键 词：薄麻壳泡核桃 实生苗 LOGISTICS 生长节律 

分 类 号：S723.131[农业科学—林木遗传育种]