几种植物抗污性及其生理机制的研究

STUDY ON ANTIPOLLUTION OF SEVERAL PLANTS AND THEIR PHYSIOLOGICAL MECHANISM

以NO_2等有毒气体,对八种植物的移栽苗木进行熏气处理,从其呼吸强度。光合用作,过氧化物同工酶和叶片全氮含量等生理指标的变化来评价其抗污染性。并进行模糊综合评判,结果表明,以桂花的抗性最强,大叶黄杨较强,夹竹桃次之,金秸和蚊母再次之,樟树、由茶和含笑的抗性较差,为选择抗污净化的树种提供了依据。

Eight species of transplanted seedlings were fumigated with NO_2 and other poisonous gases. Their antipollutipn was evaluated by the changes of physiological criteria, such as respiratory intensity, photosynthesis, peroxide isoenzyme, and total nitrogen content in the leaves, and further appraised by the method of hazy comprehensive evaluation. The results indicate that in the order of antipollution Osmanthus fragrans occupies first place, Buxus megistophylla comes second, Nerium indicum ranks third, followed by Citrus var. deliciosax, Distylium racemosum, Cinnamomum camphora, Camellia japonica, Michelia figo, respectively. It provides a basis for the selection of tree species of antnipollution and purification