经济树种苗木对二氧化硫和二氧化氮的抗性分析

应用人工熏气箱法研究了我国北方主要经济树种苗木对二氧化硫和二氧化氮的抗性,结果表明:在同等浓度下,对二氧化氮的抗性要比二氧化硫强;两种污染物对植物的伤害症状有所不同;对二氧化硫的抗性以银杏为最强,与白蜡树相当,其次为海棠果和杜梨,桃树的抗性最差,与樱花相似,而针叶树的抗性明显要低于阔叶树;对二氧化氮的抗性以银杏为最强,与悬铃木相似,其次为杜梨、柿树,无花果和杏树最差,针叶树的抗性较强.研究结果为经济林树种在城市绿化中的应用提供了一定的理论依据.

Analysis of resistance to sulfur dioxide and nitrate dioxide of economic forest seedling

Study the fastness of main economic forest seedling in the north of China to SO2 and NO2 with the method of man-made fume the gas-box.The result shows that in the equal concentration the fastness to NO2 is stronger than SO2.Two kinds of pollutants have the dissimilarity to the harmful symptom of the plant.The gingko's fastness to the SO2 is the strongest,which is similar with white wax.The begonia and pear tree is in the next place.The fastness of peach tree is the worst,which is similar with the cherry blossom.The fastness of conifer is lower than that of broadleaf obviously.The gingko has the strongest fastness to the NO2,which is similar with the chinar.The pear and persimmon tree is in the next place.The fastness of fig and almond is the worst.The fastness of conifer is stronger.The outcome provides stated academic gist to the economic forest application in urban greening.