农业现代化研究2012，Vol.33Issue(5)：622-627,6.
不同灌溉方式对寒地粳稻抗旱生理性状的影响
Effects of Different Irrigation Patterns on Drought-resistance Physiological Indexes of Japonica Rice in Cold Region
摘要
Abstract
The present work has been performed to study the effect of five different irrigation patterns on the physiological traits of drought tolerance in japonica rice of cold region. In this study, two japonica rice cultivars, Dongnong 425 and Dongnong 427, were used as the experiment materials and soil water potential as irrigation index was measured during the whole rice growth season. The result showed that the accumulation and the change magnitude of proline (Pro) and malondialdehyde (MDA) in the leaves under different irrigation treatments appeared basically the same trend during the whole growth period. The trend mentioned above was that dry farming > sever dry-wet alternate irrigation (soil was re-watered when soil water potential reached at -30 kPa) > mild dry-wet alternate irrigation (soil was re-watered when soil water potential reached at -10 kPa) > moderate dry-wet alternate irrigation (soil was re-watered when soil water potential reached at -20 kPa) > conventional irrigation. Pro and MDA were significantly increased under dry farming and severe dry-wet alternate irrigation. In addition, the content of Pro and MDA in leaves was negative correlated with drought-resistance and yield where the proline content significantly. Compared with the other three irrigation patterns, the content of chlorophyll (Chl) in the leaves under dry farming and severe dry-wet alternate irrigation was significantly decreased. With the advancement of reproductive process, the content of Chl under mild and moderate dry-wet alternate irrigation was higher than other treatments. Moreover, the moderate dry-wet alternate irrigation significantly increased the content of Chl and the content of Chl was significant correlative with drought resistance. The results suggested that moderate dry-wet alternate irrigation is a more reasonable way of irrigation and the drought resistance of Dongnong 425 is higher than Dongnong 427.关键词
寒地粳稻/灌溉方式/脯氨酸/丙二醛/叶绿素Key words
japonica rice/ irrigation patterns/ proline/ malondialdehyde/ chlorophyll分类
农业科技引用本文复制引用
蔡易,邹德堂,刘化龙,王敬国,高冬梅,张皓政,赵宏伟..不同灌溉方式对寒地粳稻抗旱生理性状的影响[J].农业现代化研究,2012,33(5):622-627,6.基金项目
黑龙江省“十二·五”科技攻关项目“高产优质节水栽培技术研究”(编号:GA10B102-5) （编号:GA10B102-5）
“十二·五”农村领域国家科技计划项目“北方粳稻新品种培育与扩繁”(编号:2011BAD35B02-01) （编号:2011BAD35B02-01）
国家科技支撑项目“东北平原北部(黑龙江)春玉米水稻持续丰产高效技术集成创新与示范”(编号:2011BAD16B11). （黑龙江）
