核农学报2012，Vol.26Issue(7)：1087-1093,7.
Cd、Cu、Pb处理下增施氮对巨桉生长和光合特性的影响
EFFECTS OF NITROGEN SUPPLEMENT ON PHOTOSYNTHETIC CHARACTERISTIC AND GROWTH RATE OF Eucalyptus Grandis UNDER THREE KIND OF HEAVY METAL STRESS
摘要
Abstract
In order to clarify the physiological effect of nitrogen on plant exposed to metals,Eucalyptus grandis was used as exprimental material to study the responses of growth and photosynthesis to the heavy metals(Cd2+、Pb2+ and Cu2+) and nitrogen addition.Results showed that(1) chlorophyll content,photosynthesis rate,and quantum yields of PSⅡ of the plants exposed to heavy metals all significantly decreased when compared to the controls;(2) nitrogen addition could increase content of chlorophyll a(Chl a) and chlorophyll b(Chl b),photosynthesis rate,and PSⅡquantum yields of plants under stress of heavy metals.The above results indicated that nitrogen played an important role in detoxification of heavy metals,and could alleviate the toxic effect of heavy metals,which could increase content of chlorophyll and photosynthesis in plants.关键词
重金属/氮/巨桉/解毒作用/光合作用Key words
heavy metal/nitrogen/eucalyptus grandis/detoxification/photosynthesis分类
农业科技引用本文复制引用
万雪琴,张帆,王长亮,丁云海..Cd、Cu、Pb处理下增施氮对巨桉生长和光合特性的影响[J].核农学报,2012,26(7):1087-1093,7.基金项目
四川省“十二五”科技攻关项目林木新品种选育 （）
