Influence of drought and flood alternation stress in different growth stages on rice yield and components
CAO Ruizhe1*, GAO Shikai2
1. Shanghai Water Engineering Design and Research Institute Co. Ltd., Shanghai 200061, China; 2. School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450045, China
Abstract：Using water level in rice fields as a regulation index of drought and flood alternation stress, the changes of rice growth, yield and components in different growth stages under drought and flood stress were studied experimentally in the paper. Field experiments were conducted by employing evapotranspiration absorption(ETA)bed in tillering, jointing and booting, heading and flowering as well as milky stages. The drought and flood alternation stresses occurred in four major growth periods could affect rice yield, especially the stress in jointing and booting stages, which could reduce the yield by 14.67% and 20.16% in maximum, respectively. The stresses in tillering stage could decrease number of rice panicles by 5.76% to 8.94%. The stresses in jointing and booting stages as well as heading and flowering stages could decrease number of grains per panicle by 6.07% to 9.57%. The stresses in hea-ding and flowering stages as well as milky stages could decline seed setting rate, especially, that in heading and flowering stages, which resulted in reductions of seed setting rate by 5.89% and 7.24% in maximum. The stress in milky stage could lower thousand grain weight by 3.81% and 5.70%. The successive drought and flood alternation stresses in multiple growth stages can produce a superposition effect and affect rice yield severely. This situation should be avoided as much as possible in ordinary rice planting.
曹睿哲*,高世凯. 不同生育期旱涝交替胁迫对水稻产量及构成的影响[J]. 排灌机械工程学报, 2019, 37(7): 639-644.
CAO Ruizhe*, GAO Shikai. Influence of drought and flood alternation stress in different growth stages on rice yield and components. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(7): 639-644.
[1]王志刚,申红芳,王磊. 我国水稻生产的特点与影响因素调查分析[J]. 中国稻米,2010,16(1):26-29. WANG Zhigang, SHEN Hongfang, WANG Lei. Investigation and analysis of the characteristics and influencing factors of rice production in China[J]. China rice, 2010,16(1):26-29.(in Chinese).[2]中华人民共和国水利部. 2015年全国水利发展统计公报[M]. 北京:中国水利水电出版社, 2016:12.[3]袁静,蒋新会,黄锦珠,等. 水稻拔节孕穗期旱涝急转对其生理特性的影响[J]. 水利科技与经济, 2008,14(4):259-262. YUAN Jing, JIANG Xinhui, HUANG Jinzhu, et al. Effects of fast conversion from drought to waterlogging stress on physiological characteristics of rice in jointing-booting stage[J]. Water conservancy science and technology and economy, 2008,14(4):259-262.(in Chinese).[4]李旭, 付立东, 王宇, 等. 不同时期水分胁迫对水稻生长发育和产量的影响[J]. 江苏农业科学, 2017,45(7):70-73. LI Xu, FU Lidong, WANG Yu, et al. Effects of water stress on growth and yield of rice at different stages[J]. Jiangsu agricultural sciences, 2017,45(7):70-73.(in Chinese)[5]李轲, 景元书, 谭孟祥, 等. 不同灌水量对拔节孕穗期水稻生理及水分利用率的影响[J]. 江苏农业科学, 2017,45(13):60-63. LI Ke, JING Yuanshu, TAN Mengxiang, et al. Effects of different irrigation rates on physiological characteri-stics and water use efficiency of rice at jointing and booting stage[J]. Jiangsu agricultural sciences, 2017,45(13):60-63.(in Chinese)[6]李钟学,张季中,王玉莲. 水稻涝害的研究与探讨[J]. 中国林副特产, 2004(6):24-25. LI Zhongxue, ZHANG Jizhong, WANG Yulian. Study and discussion on rice waterlogging[J]. Forest by-product and speciality in China, 2004(6):24-25.(in Chinese).[7]夏石头,彭克勤,曾可. 水稻涝害生理及其与水稻生产的关系[J]. 植物生理学通讯, 2000,36(6):581-588. XIA Shitou, PENG Keqin, ZENG Ke. Relationship between physiological damage of flood to rice and rice production[J]. Plant physiology communications, 2000,36(6):581-588.(in Chinese).
