13种花卉植物受硫氧化物混合气体污染的伤害症状及其抗性表现

通过熏气的方法，比较了在硫氧化物混合污染气体的作用下，木本花卉（月季Rosa chinensis，杜鹃Rhododendron simsii，一品红Euphorbia pulcherrima，茉莉花Jasminum sambac），一、二年生花卉（一串红Salvia splendens，凤仙花Impatiens balsamina），宿根花卉（君子兰Clivia miniata），室内观叶植物（文竹Asparagus setacens，吊兰Chlorophytum comosum，沿阶草Ophiopogon bodinieri，朱蕉Cordyline fruticosa，吊竹梅Zebrina pendula，白斑万年青Dieffenbachia bowmannii）中13种花卉植物的叶片伤害症状及植物抗性表现，并对植物受害后的恢复情况进行了追踪观察。发现在同种污染气体的作用下，不同种类的植物表现出不同的伤害症状。植株不同叶龄的叶片对污染气体的敏感性存在一定的差异，幼龄叶不一定比中老龄叶敏感性强。当污染浓度不超过一定阈值时，花卉植物都有不同程度的恢复能力。利用“花卉植物叶片伤害评价系统”对试验植物叶片伤害症状进行了评价，依据评价结果，对试验植物进行了抗性分级。为保证对植物抗性等级划分的准确性，建议制定统一的熏气浓度标准和评价标准。

Pollution Symptoms of Sulfur Oxides Mixed Gas on 13 Species Ornamental Plants and Their Resisting Performance

The fumigation method was adopted to compare the symptoms of leaf injury and plant resisting performance for 13 species of ornamental plants respectively belonging to woody flower plants including Rosa chinensis, Rhododendron simsii, Euphorbia pulcherrima and Jasminum sambac; annual and biennial flower plants including Salvia splendens and Impatiens balsmina; perennial plant Clivia miniata, room foliage plants including Asparagus setaceus, Chlorophytum comosum, Ophiopogon bodinieri, Cordyline fruticosa, Zebrina pendula and Dieffenbachia bowmannii） polluted in mixture gas of sulfur oxides. A follow - up observation of the restoration of injured plants was conducted. The result showed that with the pollution of same gases, the different species of plants were injured with different symptoms. There were some differences in sensitivity to pollution gases for plant leaves with different ages. It was not necessary that young leaves were more sensitive than eider ones. When the concentration of pollution gas was not higher than a certain threshold value, all the plants were able to restore with different level The ＂ Injury Evaluation System for Leaf Blade of Ornamental Plants＂ was used to evaluate and then classify the subject plants based on their pollution resistance. In order to ensure the classification accuracy of pollution resistance, unified standards of fumigation concentration and evaluation were suggested to establish.