不同水位和刈割处理对南荻生长和生理的影响  

Effects of different water levels and cutting treatments on the growth and physiology of Miscanthus lutarioriparius

作　　者：吴超[1,2] 陈心胜 邹业爱[1] 谢永宏 WU Chao;CHEN Xinsheng;ZOU Yeai;XIE Yonghong(Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, Hunan 410125, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院亚热带农业生态研究所,湖南长沙410125 [2]中国科学院大学,北京100049

出　　处：《湖南农业大学学报（自然科学版）》2018年第3期290-294,共5页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家科技支撑计划项目(2014BAC09B03);国家自然科学基金青年基金项目(31600344);湖南省自然科学基金项目(2016JJ3129)

摘　　要：为探明南荻对淹水和刈割胁迫的适应能力与机理,以洞庭湖湿地南荻为对象,研究了不同淹水水位(0、15、30 cm)和刈割处理对南荻生长和生理的影响。结果表明:与0 cm水位相比,淹水15 cm,不刈割条件下,南荻叶、茎、地下部生物量、总生物量都显著降低(P<0.05),而刈割条件下,南荻叶、总生物量显著降低(P<0.05);淹水30 cm,南荻叶、茎、总生物量及株高、POD活性都显著下降(P<0.05);在淹水条件下,刈割的南荻地下部生物量比不刈割的显著增加(P<0.05)。综合分析表明,15 cm淹水对南荻生长影响较小,30 cm淹水严重抑制南荻生长发育;刈割对南荻的生长有促进作用。To understand the adaptability and adaptation mechanism of the Miscanthus lutarioriparius under flooding and cutting stress, we investigated the effects of different water levels（0, 15, 30 cm） and cutting treatment on the growth and physiology of Miscanthus lutarioriparius from Dongting Lake wetland. In comparison with non-water condition, under 15 cm water level, the leaf, stem, underground and total biomass of Miscanthus lutarioriparius with no cutting treatment were significantly reduced（P〈0.05）, and the leaf and total biomass of Miscanthus lutarioriparius with cutting treatment were also significantly reduced（P〈0.05）; while those under the 30 cm water level,the leaf, stem, underground and total biomass, plant height and POD were all significantly decreased（P〈0.05）. Under flooding stress, in comparison with no cutting treatment, the underground biomass of Miscanthus lutarioriparius with cutting treatment increased significantly（P〈0.05）. Further comprehensive analysis showed that 15 cm flooding had little effect on the growth of Miscanthus lutarioriparius in contrast; 30 cm flooding significantly inhibited the growth and development of Miscanthus lutarioriparius and the treatment of cutting promoted the growth.

关 键 词：南荻 挺水植物 人工湿地 水位 刈割 

分 类 号：S543[农业科学—作物学] Q945[生物学—植物学]