华南农业大学学报2016，Vol.37Issue(3)：46-53,8.DOI:10.7671/j.issn.1001-411X.2016.03.007
锰施用量对香稻生理特性和糙米锰含量的影响
Effects of Mn application amounts on physiological characteristics and Mn content of aromatic rice
摘要
Abstract
Objective] To investigate the effects of MnSO 4 basal applications on physiological characters and Mn content of aromatic rice , and to provide a theoretical basis for cultivating high-quality aromatic rice .[Method] Pot experiment was carried out using Meixiangzhan and Nongxiang 18 as planting materi-als.Four basal applications of MnSO4 were employed with the concentrations of 6.67 (Mn1), 10.00 (Mn2), 13.33 (Mn3) and 16.67 (Mn4) mg・ kg -1 respectively.There was a control treatment (CK) with none MnSO 4 application .The experiment was arranged in a randomized block design .The Mn con-tents of leaves , stems and brown rice grains were measured .The enzyme activities of superoxide dis-mutase (SOD) and peroxidase (POD), and the content of malondialdehyde (MDA) in rice leaf were investigated .[Result] Compared to the control , Mn4 was more beneficial to increase the Mn content of brown rice grains in early and late seasons by 22.02% and 6.75% respectively for Meixiangzhan , and 1.48% and 4.26%respectively for Nongxiang 18 .Mn4 treatment was better to increase the Mn content in the stems and leaves of early and late aromatic rice varieties after booting stages .Mn4 treatment im-proved the net photosynthetic rate of leaf and dry mass of above-ground of early and late aromatic rice va-rieties.Moreover, Mn4 treatment was more effective to improve the SOD and POD activities and decrease the MDA content in the leaves of early and late aromatic rice varieties .[Conclusion] Appropriate basal application of MnSO 4 would be more effective to improve the net photosynthetic rate and the Mn contents of stem, leaf and brown rice grains , enhance the resistance , adaptability and growth of aromatic rice vari-ety.The optimal application amount of MnSO 4 is 16.67 mg・ kg -1 in this study .关键词
基施/MnSO4/香稻/糙米锰含量/生理特性Key words
basal application/MnSO4/aromatic rice/Mn content of brown rice grain/physiological char-acteristic分类
农业科技引用本文复制引用
李妹娟,田华,莫钊文,孔雷蕾,王抄抄,刘海东,李芙蓉,李志真,唐湘如..锰施用量对香稻生理特性和糙米锰含量的影响[J].华南农业大学学报,2016,37(3):46-53,8.基金项目
国家自然科学基金（31271646）；广东省自然科学基金（8151064201000017）；广东省农业攻关项目（2011AO20202001）；广东省农业标准化项目 （）
