Effects of CO<sub>2</sub> concentration on the growth and nutrient uptake of tomato seedlings
2006
YU Cheng-yan | DU Shao-ting | XING Cheng-hua | LIN Xian-yong | ZHANG Yong-song
Hydroponic experiment was carried out to study the effects of CO<sub>2</sub> concentration on the growth and nutrient uptake of tomato seedlings. The results showed that CO<sub>2</sub> enrichment significantly increased the accumulation of dry matter of tomato seedlings, especially root growth which resulted in an increase of root/shoot ratio. Total uptake of N, P and K was enhanced by the developed root-system although the contents of N, P and K showed different changes. N content of tomato plant was not affected by CO<sub>2</sub> concentration and the K content was decreased by CO<sub>2</sub> enrichment but the P content was significantly increased in the high concentration treatment of CO<sub>2</sub>. Enrichment of CO<sub>2</sub> largely decreased nitrate content in tomato plant, especially in the leaves. Therefore, enrichment of CO<sub>2</sub> could not only significantly increase crop yield, but also improve the quality of farm products.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Directory of Open Access Journals