栗树苗期生物量的研究  

Biomass of Chestnut at Seedling Stage

作　　者：郑瑞杰[1] 王德永[1] 刘元[1] 

机构地区：[1]辽宁省经济林研究所,辽宁大连116031

出　　处：《防护林科技》2012年第4期39-40,54,共3页Protection Forest Science and Technology

基　　金：辽宁省农业科技攻关计划项目(2011207003)

摘　　要：连续2年使用80株1年生与2年生栗树播种苗为试材,采用全株取样对根、枝干、叶片等各器官生物量进行测定,分析栗树苗期各器官生物量分配情况以及地径、苗高与各组分生物量的相关性,并建立以地径平方乘以苗高(D2H)为自变量,各组分生物量(W)为因变量的回归模型。研究结果表明:栗树苗期随着树龄增加,根生物量所占比例逐渐降低,枝干生物量所占比例逐渐增加,而叶片生物量所占比例变化不大;同一树龄不同苗高分级的苗木株数及其生物量近似于正态分布;单株生物量随幼苗的生长而明显增加;地径平方乘以苗高(D2H)与根、枝干、叶片、地上部分以及全株等各组分生物量(W)的幂函数回归方程模型回归性较高(决定系数R2=0.895 9～0.971 2,平均相对误差绝对值MAPE=16.59%～23.01%),具有一定估测价值。Taking 80 strains of 1 year and 2 year chestnut seedlings as test materials for 2 consecutive years, each organ biomass of roots, branches,leaves were determined by adopting the whole plant. Each organ biomass allocation ＆ correlation of ground diameter （D） ,seedling height （H） ＆ biomass （W） of various components for chestnut were analyzed. Regressive model between D2H ＆ W were established. Result shows that：along with the increasing age at seedling stage ,the proportion of root biomass reduces gradually; the proportion of branch biomass increasing gradually; the proportion of leaf biomass changed little. The number ＆ biomass of different grades of seedling height at the same seedling age are approximate to normal distribution. Individual biomass significantly increases with the growth of seedling. The model of power function regression equation between D2H ＆ W have a higher regression effect （R2 =0.895 9-0.971 2 ,MAPE = 16.59% -23.01% ） ,and have a certain estimation value.

关 键 词：栗树 苗期生物量 回归方程 

分 类 号：S664.2[农业科学—果树学]