江西农业大学学报2012，Vol.34Issue(3)：487-491,5.
除草剂(百草枯)对稗草生物量生殖分配及生长特性的影响
The Biomass Allocation of Echinochloa crusglli (L.) Beauv under Different Concentrations of Herbicide (Paraquat)
摘要
Abstract
In order to understand the resource allocation characteristics under different concentrations of herbicides, paraquat was selected as the test reagent, and five application concentrations were set according to the application amount for rice fields to determine the biomass of every organs and the quantitative characteristics of reproductive plantlets of Echinochloa crusglli (L.) beauv under different concentrations, and to compare and analyse the biomass of each organ and biomass allocation ratios. The results indicated that from the flowering stage to the ripening stage, the total biomass of Echinochloa crusglli (L.) beauv kept basically unchanged, the biomass and biomass allocation ratio of root and stem decreased, the biomass and its allocation ratios of reproductive organs increased. There was no obvious law of change in the biomass of leaf, but the biomass allocation value increased with the concentration of herbicide. In each stage, the reproductive allocation ratios showed an order of stem>root>leaf>flower(seed). The quantitative characteristics of the reproductive decreased with the increase of the concentration of paraquat. Under the concentration of Cl, the spike length, RA I ,RA II were all the maximum.关键词
稗草/除草剂/生物量/生殖分配Key words
Echinochloa crusglli (L.) Beauv/ herbicide/ biomass/ reproductive allocation分类
农业科技引用本文复制引用
郭伟,赵丽丽,潘星极,邓巍,郑述强..除草剂(百草枯)对稗草生物量生殖分配及生长特性的影响[J].江西农业大学学报,2012,34(3):487-491,5.基金项目
辽宁省教育厅高等学校创新团队科研项目(2009T088)和沈阳农业大学博士后基金项目 （2009T088）
