Dry matter yield and nitrogen fixation of Pisum sativum and Vicia faba at elevated CO2 and three nitrogen levels.

The dataset provides information about the effect of elevated CO2 and N addition on the biomass yield and the percentage of nitrogen derived from air (%Ndfa) of two legume species, Pisum sativum L. and Vicia faba L. The experiment was carried out under controlled conditions in growth chambers本数据集涵盖了高浓度二氧化碳（elevated CO2）与氮添加对两种豆科物种——豌豆（Pisum sativum L.）和蚕豆（Vicia faba L.）的生物量产量及大气来源氮百分比（%Ndfa）的影响相关信息。该实验在人工气候箱的可控条件下开展。