%0 Journal Article %A Zhang Hongfang %A Chen Zuozhong %A Huang Dehua %T The Preliminary Study of Effect of Different Nitrogen Level of Soil on Photosynthesis Characteristic of Maize %D %R %J Chinese Journal of Plant Ecology %P 339-341 %V 6 %N 4 %X %U https://www.plant-ecology.com/EN/abstract/article_3715.shtml