植物研究2012，Vol.32Issue(2)：151-158,8.
不同生长时期多伞阿魏土壤养分及光合特性比较研究
Comparison Study on Soil Nutrient and Photosynthetic Characteristics of Ferula ferulaeoides at Different Growth Periods
摘要
Abstract
In this paper, the dynamic changes of soil water content, pH, organic substance and soil nutrient, as well as the diurnal variations of net photosynthetic rate, transpiration rate and water use efficiency of Ferula feru-laeoides at different growth periods were studied. We found that the soil water content, organic substance and soil nutrient showed downward tendency with the growth of F. Ferulaeoides while the pH was reverse, but changed slightly. In different soil depths, the soil water content and pH gradually increased with the soil depth, while organic substance and soil nutrient gradually reduced. The net photosynthetic rates at three growth periods varied in a double-peak curve and presented obvious phenomenon of "midday rest" at 14:00, with the daily mean values of leaf expansion period > maturation period > fruit period; The transpiration rates appeared to vary in a single-peak curve and had the highest value at 14:00, with the daily mean values of leaf expansion period > fruit period > maturation period; The water use efficiency showed a increased tendency at growth period and had the lowest value at 14:00, with the diurnal mean values of maturation period > fruit period > leaf expansion period. The correlation analysis revealed that stomatal conductance, photosynthetic active radiation had positive correlation with photosynthetic rate; Light intensity had evident positive correlation with transpiration rate.关键词
多伞阿魏/土壤养分/净光合速率/蒸腾速率Key words
Ferula ferulaeoides/soil nutrient/net photosynthetic rate/transpiration rate分类
农业科技引用本文复制引用
李小波,庄丽,王仲科,徐智全..不同生长时期多伞阿魏土壤养分及光合特性比较研究[J].植物研究,2012,32(2):151-158,8.基金项目
国家自然基金项目(110140101)资助 （110140101）
