中国稻米

中国稻米 ›› 2021, Vol. 27 ›› Issue (6): 130-132.DOI: 10.3969/j.issn.1006-8082.2021.06.028

• 品种与技术 • 上一篇    下一篇

叶龄和株距对机插常规晚粳稻产量的影响

肖玉苹1(), 方明2, 沈足金1, 徐建强1, 金建华3, 刘春辉4   

  1. 1嘉兴市农业科学院 桐乡农业科学研究所,浙江 桐乡 314500
    2桐乡市农业农村局智慧农业发展中心,浙江 桐乡314500
    3桐乡市开发区（高桥街道）农业经济服务中心,浙江 桐乡 314500
    4桐乡市石门镇农业经济服务中心,浙江 桐乡314500
  • 收稿日期:2021-05-29 出版日期:2021-11-20 发布日期:2021-11-20
  • 作者简介:

    第一作者：xyp_986@163.com

Effects of Seedling Age and Plant Space on Yield of Mechanical-transplanted Conventional Late Japonica Rice

Yuping XIAO1(), Ming FANG2, Zujin SHEN1, Jianqiang XU1, Jianhua JIN3, Chunhui LIU4   

  1. 1Tongxiang Institute of Agricultural Science, Jiaxing Academy of Agricultural Sciences, Tongxiang, Zhejiang 314500, China
    2Smart Agriculture Development Center of Tongxiang Agriculture and Rural Bureau, Tongxiang, Zhejiang 314500, China
    3Agricultural Economic Service Center of Tongxiang Development Zone （Gaoqiao sub-district）, Tongxiang, Zhejiang 314000, China
    4Agricultural Economic Service Center of Shimen Town, Tongxiang, Zhejiang 314512, China
  • Received:2021-05-29 Online:2021-11-20 Published:2021-11-20
  • About author:

    1st author: xyp_986@163.com

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摘要：

以桐乡大面积应用的常规晚粳稻秀水134、秀水14和嘉67为材料,研究了不同叶龄和株距对机插常规晚粳稻产量及其构成、群体茎蘖动态的影响。结果表明,随着移栽叶龄的延长,有效穗数和总颖花量显著下降,每穗粒数和千粒重显著上升,结实率不同处理间差异不显著。3.0叶龄处理下机插常规粳稻产量最高（9.73 t/hm2）,比3.5叶龄和4.0叶龄处理分别高5.99%和15.14%。随着密度降低,有效穗数、总颖花量及千粒重均显著下降,而每穗粒数增加不明显。14 cm株距处理下机插常规粳稻产量最高（9.34 t/hm2）,比16 cm和18 cm处理分别高2.86%和10.66%。综合来看,在桐乡常规晚粳稻作机插栽培,以3.0叶龄移栽、行株距30 cm×14 cm为宜。

关键词: 粳稻, 叶龄, 密度, 机插栽培, 产量

Abstract:

Using conventional late japonica rice Xiushui 134, Xiushui 14 and Jia 67 as materials, which were widely used in Tongxiang City, the effects of different leaf age and plant spacing on the yield and composition and the dynamics of stems and tillers of conventional late japonica rice were studied. The results showed that, the number of effective panicles and total spikelets decreased significantly, the number of grains per panicle and the thousand-grain weight increased significantly, and there was no significant difference in seed setting rate among different treatments with the extension of the transplanted seedling age. The yield of machine-transplanted conventional japonica rice at 3.0 leaves treatment was the highest（9.73 t/hm2）, which was 5.99% and 15.14% higher than 3.5 leaves and 4.0 leaves treatments, respectively. With the decrease of planting density, the number of effective spikes, total spikelets and 1000-grain weight all decreased significantly, while the number of grains per spike did not increase significantly. The average yield of machine-transplanted conventional japonica rice（9.34 t/hm2） under the 14 cm plant spacing treatment was the highest, which was 2.86% and 10.66% higher than that of the 16 cm and 18 cm treatments, respectively. In conclusion, the seedling age of 3 leaves with 30 cm×14 cm spacing seems to be the optimal seedling age and planting density for machine-transplanted conventional japonica rice.

Key words: japonica rice, seedling age, plant space, mechanical-transplanted, yield

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