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Position: Home > Articles > Elevated atmospheric CO_2 and crop/weed competition. Chinese Journal of Applied Ecology 2002,13 (10) 1339-1343

开放式空气CO_2浓度升高与作物/杂草的竞争关系

作  者:
曾青;朱建国
单  位:
中国科学院南京土壤研究所物质循环开放实验室
关键词:
CO2浓度增高;作物;杂草;竞争关系
摘  要:
CO2 浓度升高对植物的光合作用、呼吸作用和水分利用等生理过程产生直接影响 ,进而影响植物的生长和繁殖 .CO2 浓度升高对于具有C3 光合途径的植物较具C4光合途径的植物更为有益 .由于许多重要的杂草是C4植物 ,而许多重要的作物是C3 植物 ,CO2 浓度升高对杂草 /作物的相互关系将有重要影响 .本文就全球CO2 浓度升高和气候变化对杂草 /作物之间竞争关系影响进行综述 ,同时针对目前研究现状和可持续农业的需要 ,提出CO2 浓度升高条件下杂草 /作物之间竞争关系及未来农田杂草治理方面理论与实践中有待解决的问题 .
译  名:
Elevated atmospheric CO_2 and crop/weed competition.
作  者:
ZENG Qing,ZHU Jianguo(Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008.)
关键词:
Free-air CO 2 enrichment, Crop, Weed, Competition.
摘  要:
Elevated atmospheric CO 2 has direct photosynthesis effects on photosynthesis,respiration and water use efficiency, as well as on the growth and reproduction of plants.CO 2 enrichment is more beneficial to plants with the C 3 photosynthetic pathway than to those with the C 4 photosynthetic pathway.Most major weeds are C 4 plants, while many crops are C 3 plant. Therefore,different effects of elevated atmospheric CO 2 have important implications for weed/crop interaction. In this paper, the effect of CO 2enrichment and global chang on weed/crop interaction were summarized, and some theoretical and practical aspects were discussed.

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