根际通气和盐分胁迫对玉米生长特性的影响  

Effect of Rhizosphere Ventilation and Salt Stresses on the Growth Characteristics of Maize

作　　者：杨润亚[1] 张振华[2] 王洪梅[1] 程晓培[1] 胡青[1] 高智丽[1] 

机构地区：[1]鲁东大学生命科学学院 [2]鲁东大学地理与规划学院,山东烟台264025

出　　处：《鲁东大学学报（自然科学版）》2010年第1期35-38,共4页Journal of Ludong University:Natural Science Edition

基　　金：国家自然科学基金(50609022);山东省教育厅科技计划项目(J07YF16);鲁东大学大学生科技创新项目资助

摘　　要：通过盆栽实验研究了根际通气和盐分胁迫对玉米植株生长状况及生物量的影响.结果表明,不同浓度的盐水(3,6和9 g/L NaCl水溶液)灌溉处理,均使玉米的株高、茎粗、叶面积及各器官的生物量减小,且随着盐分浓度的增大,胁迫效应加强;在所有灌水处理中,根际通气均使玉米的株高、茎粗、叶面积及各器官的生物量增大,在一定程度上可以缓解盐水灌溉对植物生长发育的胁迫效应;盐分胁迫和根际通气均使玉米的根冠比在一定程度上有所增大,但其影响机制可能不同.The effect of rhizosphere ventilation and salt stresses on the growth characteristics and dry weight of maize cultivated in pot was studied. The results showed that the salt stresses with different NaCl concentration （ 3,6 and 9 g/L） lead to decline of the height, the thickness, the leaf area and the dry weight of the maize, and with the increase of NaCl concentration, its effects is strengthening gradually. Rhizosphere ventilation lead to increase of the height, the thickness, the leaf area and the dry weight of maize, and rhizosphere ventilation can alleviate above adverse aspects caused by salt stresses. Though rhizosphere ventilation and salt stresses can all enhance root/shoot ratio, the mechanism of the effect is different.

关 键 词：玉米 根际通气 盐分胁迫 干物重 根冠比 

分 类 号：Q945.1[生物学—植物学]