四川农业大学学报 ›› 2021, Vol. 39 ›› Issue (3): 307-315.doi: 10.16036/j.issn.1000-2650.2021.03.005

所属专题: 水稻研究专题

• 特别策划:水稻研究专题 • 上一篇    下一篇

2009—2019年成都市中籼迟熟水稻品种产量构成分析

蒋波1, 孙加威2,*, 何舜1, 任哓波2, 冯生强2, 阎洪2, 林金平3   

  1. 1.成都市种子管理站,成都 610041;
    2.成都市农业技术推广总站,成都 610041;
    3.四川奥力星农业科技有限公司,四川 彭州 611930
  • 收稿日期:2020-08-05 出版日期:2021-06-28 发布日期:2021-07-05
  • 通讯作者: *孙加威,农艺师,主要从事作物高产栽培研究, E-mail:sunjiaweiyaan@foxmail.com。
  • 作者简介:蒋波,农艺师,农学学士,主要从事农作物品种展示评价种子检验和种子管理等工作,E-mail:359998598@qq.com。
  • 基金资助:
    成都市科技局重点研发支撑计划(2018-YF09-00010-SN)

Analysis of Yield Components of Medium Indica and Late Maturity Rice Varieties in Chengdu from 2009 to 2019

JIANG Bo1, SUN Jiawei2,*, HE Shun1, REN Xiaobo2, FENG Shengqiang2, YAN Hong2, LIN Jinping3   

  1. 1. Chengdu SeedManagement Station,Chengdu 610041,China;
    2. Chengdu Agricultural Technology Extension Station,Chengdu 610041,China;
    3. Sichuan Aoli Xing Agricultural Technology Co.,Ltd,Pengzhou 611930,Sichuan,China
  • Received:2020-08-05 Online:2021-06-28 Published:2021-07-05

摘要: 【目的】为探索新的水稻品种产量及其构成的变化趋势。【方法】通过对2009- 2019 年成都市168 个中籼迟熟籼稻品种的产量及其构成进行分析。【结果】①11年来成都市中籼迟熟籼稻产量呈递增趋势,原因在于有效穗、每穗颖花数、结实率推动的总实粒数逐年提高;②结合主成分分析表明,单穗颖花数、单穗重、结实率和成穗率是决定水稻产量的关键因子; ③以冈优725为对照,增产组产量高于冈优725的原因在于有效穗导致的总实粒数的增加;减产组产量低于冈优725的原因在于单穗颖花数和结实率的降低造成的每穗粒数的降低。④通径分析表明,总实粒数、千粒重、结实率与增产组产量的直接通径系数最大,减少千粒重提高总实粒数是其产量增加的关键。有效穗、单穗重增加与减产组的直接通径系数最大,降低有效穗提高单穗重是提高其产量的关键。⑤直播机插秧等群体优势明显的栽培技术宜选择群体颖花量在上更具优势的增产组水稻品种。【结论】保持较高的单穗重的基础上通过增加有效穗数目,提高群体实粒数是水稻品种产量进一步提高有效路径。

关键词: 水稻, 产量, 产量构成, 总实粒数

Abstract: 【Objective】 In order to explore the changing trend of the yield and composition of new rice varieties.【Method】 The yield and composition of 168 medium indica late maturing indica rice varieties in Chengdu from 2009 to 2019 were analyzed.【Result】 ①The yield of medium indica late maturing indica rice in Chengdu showed an increasing trend in the past 11 years,because the total number of filled grains promoted by effective panicle,spikelet number per panicle and seed setting rate increased year by year. ②The number of spikelets per panicle,weight per panicle,seed setting rate and panicle rate are the key factors that determine rice yield. ③Taking Gangyou 725 as the control,the reason why the yield of the increased yield group is higher than Gangyou 725 is caused by the effective panicle. The total number of grains increased;the reason why the yield of the reduced yield group was lower than that of Gangyou 725 was the decrease in the number of spikes per panicle and the decrease in seed setting rate. ④Path analysis showed that the direct path coefficient of the total number of seeds,thousand-grain weight,seed setting rate and the output of the increasing group was the largest. Reducing the thousand-grain weight and increasing the total number of seeds was the key to the increase of its output. The direct path coefficient of the effective panicle,single panicle weight increase and yield reduction group is the largest,reducing the effective panicle and increasing the single panicle weight is the key to improving its yield. ⑤Cultivation techniques with obvious group advantages,such as direct seeding and machine transplanting,should choose rice varieties of the increasing yield group with more advantages in population spikelets.【Conclusion】 Maintaining the higher panicle weight and increasing the number of effective panicles and the number of filled grains in population is an effective way to further improve the yield of rice varieties.

Key words: rice, yield, yield components, total number of grains

中图分类号: 

  • S512.1+1