CAJ | 학술논문

连续2年使用80株1年生与2年生果树播种苗为试材，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（D。H）为自变量，各组分生物量（形）为因变量的回归模型。研究结果表明：果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（形）的幂函数回归方程模型回归性较高（决定系数R2=0．8959～0．9712．平均相对误差绝对值MAPE=16．59％-23．01％），具有一定估测价值。
련속2년사용80주1년생여2년생과수파충묘위시재，채용전주취양대근、지간、협편등각기관생물량진행측정，분석률수묘기각기관생물량분배정황이급지경、묘고여각조분생물량적상관성，병건립이지경평방승이묘고（D。H）위자변량，각조분생물량（형）위인변량적회귀모형。연구결과표명：과수묘기수착수령증가，근생물량소점비례축점강저，지간생물량소점비례축점증가，이협편생물량소점비례변화불대；동일수령불동묘고분급적묘목주수급기생물량근사우정태분포；단주생물량수유묘적생장이명현증가；지경평방승이묘고（D2H）여근、지간、협편、지상부분이급전주등각조분생물량（형）적멱함수회귀방정모형회귀성교고（결정계수R2=0．8959～0．9712．평균상대오차절대치MAPE=16．59％-23．01％），구유일정고측개치。
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.