摘要
利用OTC-1型开顶式气室研究CO2和O3浓度倍增对大豆叶片及其总生物量的影响结果表明,CO2和O3浓度倍增均可致使大豆黄叶率增加,绿叶率下降;CO2浓度倍增使大豆总叶片干物质量和总叶面积、绿叶和黄叶干物质量及总生物量均明显增加;O3浓度倍增使大豆总叶干物质量和总叶面积、绿叶和黄叶干物质量及总生物量均下降;CO2与O3交互作用处理对大豆生物量的影响均表现为CO2>O3;CO2与O3持续倍增处理对大豆叶片老化的影响为O3>CO2,CO2与O3逐渐达倍增的处理在大豆鼓粒前CO2的缓解作用明显,鼓粒后CO2与O3的影响逐渐接近;大豆总生物量增长遵循自然增长曲线。
The impacts of O3 and CO2 concentration doubling on the soybean leaf development and biomass are studied by using OTC-1 open top chambers. The results show that O3 and CO2 concentration doubling can lead to the yellow leaf ratio increase and the green leaf ratio decrease. CO2 concentration doubling causes positive effects on the soybean leaf area, leaf weight, weight of green leaf and yellow leaf, as well as biomass, while O3 concentration doubling causes negative effects on those. The mixed ozone and carbon dioxide may alleviate the negative effect of ozone on soybean biomass. The negative effect of O3 on soybean leaf is more obvious than CO2 in O3 and CO2 combination lasting concentration doubling. Before the bulge kernel stage, the alleviating effect of CO2 on soybean leaf is apparent in the treatment of O3 and CO2 in combination gradually to concentration doubling; while after the bulge kernel stage, the effect of CO2 and O3 on soybean leaf is similar, the increasing of soybean biomass follows the curve of natural growth.
出处
《中国生态农业学报》
CAS
CSCD
2005年第4期52-55,共4页
Chinese Journal of Eco-Agriculture
基金
国家自然科学基金项目(49899270)资助
