干湿交替对直播再生稻抗倒伏性和产量的影响

doi:10.14088/j.cnki.issn0439-8114.2023.12.004

湖北农业科学 ›› 2023, Vol. 62 ›› Issue (12): 13-17.doi: 10.14088/j.cnki.issn0439-8114.2023.12.004

干湿交替对直播再生稻抗倒伏性和产量的影响

林义月^1,2, 李阳², 张作林², 汪本福², 张枝盛², 程建平²

1.长江大学农学院,湖北荆州 434025;
2.湖北省农业科学院粮食作物研究所/粮食作物种质创新与遗传改良湖北省重点实验室,武汉 430064

收稿日期:2023-10-08 发布日期:2024-01-10
通讯作者: 程建平（1968-）,男,湖北天门人,研究员,博士,主要从事水稻栽培与生态学研究,（电子信箱）chjp609@163.com。
作者简介:林义月（1998-）,女,安徽滁州人,在读硕士研究生,研究方向为水稻栽培,（电话）18365005019（电子信箱）312077092@qq.com.
基金资助:
粮食作物种质创新与遗传改良湖北省重点实验室开放课题（2022lzjj06）; 湖北省重点研发计划项目（2021BBA222）

Effects of alternate wetting and drying on lodging resistance and yield of direct-seeded ratooning rice

LI Yi-yue^1,2, LI Yang², ZHANG Zuo-lin², WANG Ben-fu², ZHANG Zhi-sheng², CHENG Jian-ping²

1. College of Agriculture, Yangtze University, Jingzhou 434025, Hubei, China;
2. Institute of Food Crops, Hubei Academy of Agricultural Sciences/Hubei Provincial Key Laboratory of Food Crop Germplasm Innovation and Genetic Improvement,Wuhan 430064,China

Received:2023-10-08 Published:2024-01-10

摘要/Abstract

摘要： 为了选择适合直播再生稻（Oryza sativa L.）的水分管理方式,在大田条件下,以再生稻丰两优香1号为试验材料,设置常规淹灌（CI）、轻度干湿交替（AWMD）、重度干湿交替（AWSD）3种水分处理,研究干湿交替水分处理方式对水稻茎秆倒伏指数、植株茎秆形态性状、头季和再生季水稻产量的影响及倒伏与产量之间的关系。结果表明,轻度干湿交替下头季稻产量最高,达8.53 t/hm²,且轻度干湿交替的头季稻每穗粒数分别比常规淹灌和重度干湿交替增加26.11%和3.73%,轻度干湿交替灌溉再生季稻产量（7.12 t/hm²）比常规淹灌和重度干湿交替增加14.47%和9.54%,轻度干湿交替的周年产量显著高于常规淹灌和重度干湿交替（P<0.05）;与其他2种水分处理方式相比,轻度干湿交替降低了再生稻的倒伏指数,提高了抗折力,使再生稻茎秆重心高度下移,增强了节间粗度和茎壁厚度,从而提高了再生稻的抗倒伏能力;再生稻的产量与水稻茎秆抗倒伏性呈显著正相关（P<0.05）。综上所述,轻度干湿交替可以提高直播再生稻的抗倒伏性和产量。

关键词: 直播再生稻（Oryza sativa L.）, 干湿交替, 抗倒伏性, 产量

Abstract: To choose a suitable water management method for direct-seeded ratoon rice（Oryza sativa L.）, a field experiment was conducted using ratooning rice Fengliangyouxiang No.1 with three irrigation regimes, including conventional irrigation （CI）, alternate wetting and moderate drying irrigation （AWMD） and alternate wetting and severe drying irrigation （AWSD）, the effects of alternate wetting and drying irrigation on lodging index of rice stem, morphological characters of rice stem, yield in main and ratoon seasons and the relationship between lodging and yield were studied. The results showed that the yield of main season rice was the highest in alternate wetting and moderate drying irrigation treatment, which was 8.53 t/hm², and the grain number per panicle in alternate wetting and moderate drying irrigation treatment increased significantly by 26.11% and 3.73% compared with conventional irrigation and alternate wetting and severe drying irrigation treatment. The yield of ratoon season rice under alternate wetting and moderate drying irrigation treatment （7.12 t/hm²） was 14.47% and 9.54% higher than that of conventional irrigation and alternate wetting and severe drying irrigation. The annual yield of ratoon rice under alternate wetting and moderate drying irrigation was significantly higher than that of conventional irrigation and alternate wetting and severe drying irrigation（P<0.05）. Alternate wetting and moderate drying irrigation treatment reduced the lodging index of ratoon rice, improved its bending resistance, shifted the height of the stem center of gravity downwards, enhanced the thickness of the internode and stem wall, and thus improved the lodging resistance of ratoon rice. There was a significant positive correlation between ratoon rice yield and the lodging resistance（P<0.05）. In conclusion, the lodging resistance and yield of direct-seeded ratooning rice could be improved by alternate wetting and moderate drying irrigation.

Key words: direct-seeded ratooning rice（Oryza sativa L.）, alternate wetting and drying, lodging resistance, yield

中图分类号:

S511

林义月, 李阳, 张作林, 汪本福, 张枝盛, 程建平. 干湿交替对直播再生稻抗倒伏性和产量的影响[J]. 湖北农业科学, 2023, 62(12): 13-17.

LI Yi-yue, LI Yang, ZHANG Zuo-lin, WANG Ben-fu, ZHANG Zhi-sheng, CHENG Jian-ping. Effects of alternate wetting and drying on lodging resistance and yield of direct-seeded ratooning rice[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(12): 13-17.

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干湿交替对直播再生稻抗倒伏性和产量的影响

Effects of alternate wetting and drying on lodging resistance and yield of direct-seeded ratooning rice

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