萌蘖调控对辽东栎留存萌生株生长与结实的影响  

Effects of ramets adjustment on Quercus liaotungensis growth and seed generation.

作　　者：孟令彬[1] 包维楷[1] 庞学勇[1] 孙凡[2] 

机构地区：[1]中国科学院成都生物研究所,成都610041 [2]西南大学,重庆400716

出　　处：《应用生态学报》2006年第10期1771-1776,共6页Chinese Journal of Applied Ecology

基　　金：国家"十五"科技攻关项目(2001BA606A-05);中国科学院知识创新工程项目(KZCX3-SW-339);中国科学院"西部之光"人才计划项目;中国科学院台站(茂县生态站)网络研究基金资助项目.

摘　　要：比较了不同调控措施对岷江上游辽东栎萌生灌丛生长与结实的影响.结果表明,人为调控对辽东栎萌生灌丛本生长阶段的高生长与有性繁殖有着显著影响.各调控措施对辽东栎灌丛萌生株的基径增长未产生明显影响;保留2支和3支萌生株的丛高生长优势明显.调控丛的新生枝数量、总长度、总生物量较未调控前有较大增加,保留2支萌生株的丛类型增加得尤为显著;叶片数量、叶片总生物量与未调控前相比增加明显,叶片面积按保留萌生株数量由多到少逐渐变小.调控后,每丛保留3支萌生株的丛产生的种子最多,但自然状态丛种子单粒重最大.This paper studied the effects of different ramets adjustment measures on the growth and seed generation of Quercus liaotungensis shrub in the upper reach of Minjiang River. The results showed that artificially adjusting ramets number largely affected the growth of plant height and sexual reproduction of Q. liaotungensis. The adjustment had little effect on the basal diameter of remained ramets, but obviously affected their height if 2 or 3 ramets per shrub were remained. The number, total length, and total biomass of new branches of adjusted shrub had more increase than those of unadjusted one, especially for the shrub of remaining 2 ramets. In adjusted shrub, the number and total biomass of leaves increased obviously, and the leaf area decreased gradually with increasing number of remained ramets. The shrub with three remained ramets generated most seed, while natural shrub had the biggest weight of single seed.

关 键 词：岷江上游 辽东栎 萌生灌丛 人为调控 

分 类 号：S792.18[农业科学—林木遗传育种]