中国稻米 ›› 2023, Vol. 29 ›› Issue (6): 107-109.DOI: 10.3969/j.issn.1006-8082.2023.06.022

• 品种与技术 • 上一篇    下一篇

美香占2号在粤北作低桩机收再生稻的表现及关键栽培技术

胡香玉1(), 黄振标2, 钟旭华1,*(), 梁开明1, 潘俊峰1, 刘彦卓1, 傅友强1, 胡锐1, 李妹娟1, 叶群欢1   

  1. 1广东省农业科学院 水稻研究所/广东省水稻育种新技术重点实验室/广东省水稻工程实验室,广州 510640
    2始兴县农业科学研究所,广东 始兴 512529
  • 收稿日期:2023-04-28 出版日期:2023-11-20 发布日期:2023-11-21
  • 通讯作者: *xzhong8@163.com
  • 作者简介:

    第一作者:huxiangyu.2@163.com

  • 基金资助:
    广东省重点领域研发计划项目(2020B0202090003);广东省自然科学基金(2020A1515110224);广东省自然科学基金(2018A030313463);广东现代农业产业技术体系水稻创新团队(2020KJ105);广东现代农业产业技术体系水稻创新团队(2021KJ105);广东省农业科学院学科团队建设项目(202112TD);2021年省级乡村振兴战略专项(粤财农〔2021〕37号);广东省重点实验室运行费(2020B1212060047)

Performance and Cultivation Techniques of Meixiangzhan 2 as Machine-harvested Low Stubble Ratooning Rice in Northern Guangdong

HU Xiangyu1(), HUANG Zhenbiao2, ZHONG Xuhua1,*(), LIANG Kaiming1, PAN Junfeng1, LIU Yanzhuo1, FU Youqiang1, HU Rui1, LI Meijuan1, YE Qunhuan1   

  1. 1Rice Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory of New Technology for Rice Breeding/Guangdong Rice Engineering Laboratory, Guangzhou 510640, China
    2Shixing Institute of Agricultural Sciences, Shixing, Guangdong 512529, China
  • Received:2023-04-28 Online:2023-11-20 Published:2023-11-21
  • Contact: *xzhong8@163.com
  • About author:

    1st author: huxiangyu.2@163.com

摘要:

美香占2号是目前广东省种植面积最大的高端丝苗米品种,具有米质优、再生能力强、适应性广的特点。本文总结了该品种2018—2021年在粤北作低桩机收再生稻的种植表现。美香占2号再生季生育期84~89 d,早季收割至再生季齐穗期有效积温893 ℃~1 092 ℃,再生季产量为293.5~343.0 kg/667 m2,为早季产量的69.1%~74.6%。2021年,“早稻-再生稻”模式下两季总成本投入1 974.5元/667 m2,经济效益为824.3元/667 m2。与一季稻相比,再生稻模式增产328.0 kg/667 m2,经济效益增加740.3元/667 m2;与双季稻相比,再生稻模式两季总产降低57.0 kg/667 m2,节省成本582.5元/667 m2,经济效益增加377.3元/667 m2。本文还总结了美香占2号作低桩机收再生稻的关键栽培技术,以期为华南地区机收再生稻高产栽培提供参考。

关键词: 美香占2号, 再生稻, 产量, 效益, 栽培技术

Abstract:

Meixiangzhan 2 is a high-quality Simiao rice variety with the largest planting area in Guangdong Province. It has the characteristics of high quality, strong regeneration ability and wide adaptability. This paper summarized the planting performance of Meixiangzhan 2 as machine-harvested low stubble ratooning rice in northern Guangdong from 2018 to 2021. In ratooning season, Meixiangzhan 2 had a growth period of 84~89 days, and the effective accumulated temperature from harvest of the early season to the heading stage of the ratooning season was 893 ℃~1 092 ℃. The grain yield of ratoon rice was 293.5~343.0 kg/667 m2, amounting to 69.1%~74.6% of that of early season. In 2021, the total cost investment and economic benefit of early rice-ratooning rice mode was 1 974.5 yuan/667 m2 and 824.3 yuan/667 m2, respectively. Compared with the single-season rice, the yield of ratooning rice mode increased 328.0 kg/667 m2, and the economic benefit increased 740.3 yuan/667 m2, respectively. Compared with the double cropping rice, early rice-ratooning rice mode decreased the total grain yield by 57.0 kg/667 m2, but saved the total cost investment by 582.5 yuan/667 m2, and increased the economic benefit by 377.3 yuan/667 m2. This paper also summarized the key cultivation techniques of Meixiangzhan 2 as machine-harvested low stubble ratooning rice, in order to provide reference for high-yield cultivation of mechanically harvested ratooning rice in South China.

Key words: Meixiangzhan 2, ratooning rice, grain yield, benefit, cultivation techniques

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