北京林业大学学报2015，Vol.37Issue(4)：82-89,8.DOI:10.13332/j.1000-1522.20140363
黄土丘陵区油松根系化感效应研究
Allelopathic effect of Pinus tabuliformis root in loess hilly area
摘要
Abstract
This research aimed to provide a scientific basis for the construction of compound arbor-shrub-herb vegetation in Pinus tabuliformis forest by studying the allelopathic effect of P. tabuliformis root on varied plant species. The allelopathic effects of P. tabuliformis root aqueous extract ( RAE) on the germination and growth of seven plants ( P. tabuliformis, Robinia pseudoacacia, Platycladus orientalis, Lespedeza bicolor, Spiraea salicifolia, Agropyron cristatum, and Medicago sativa) were investigated with different concentrations of P. tabuliformis RAE, i. e. , 0.5, 1.0, 3.0, 5.0, 7.0, and 10.0 mg/mL. The results showed that P. tabuliformis RAE inhibited the growth of R. pseudoacacia, A. cristatum, and M. sativa, and such effect increased with the increase of RAE concentration. P. tabuliformis RAE promoted only the growth of P. orientalis at each concentration. At low concentrations, the P. tabuliformis RAE promoted the growth of P. tabuliformis, L. bicolor and S. salicifolia, while it inhibited at high concentrations;at 1 mg/mL the promoting effects changed into inhibiting. We suggest that when constructing compound arbor-shrub-herb vegetation in P. tabuliformis forest, we should give priority to P. orientalis, and carefully choose R. pseudoacacia, A. cristatum, and M. sativa. When choosing L. bicolor and S. salicifolia, we should control the thinning and intercropping density of P. tabuliformis forest.关键词
油松根系/化感效应/黄土丘陵区Key words
Pinus tabuliformis root/allelopathic effect/loess hilly area分类
农业科技引用本文复制引用
王仙,魏天兴,朱金兆,赵兴凯,刘海燕..黄土丘陵区油松根系化感效应研究[J].北京林业大学学报,2015,37(4):82-89,8.基金项目
国家生态系统观测研究网络运行服务项目(2013—2014)、"十二五"国家科技支撑计划项目(2011BAD38B06)、林业科学技术推广项目(2012-40). （2013—2014）
