何旎清，方珊茹，沈伟锋，刘玉芹，赵明富

摘要：旗5优661是福建省农业科学院水稻研究所用不育系旗5A与恢复系福恢661配组选育而成的杂交水稻新品种。该组合表现为群体整齐，分蘖力强，熟期转色好，结实率高，产量较高，米质优，综合抗性好等特点，2020年通过福建省农作物品种审定（闽审稻20200048号）。介绍了2018-2019年旗5优661在福建省晚稻区试的示范表现，并从适时播种、合理密植、肥水管理、病虫害防治、花期调控、隔离措施等方面总结了旗5优661的高产栽培技术及其制种技术，以促进该品种在福建省的推广应用。

关键词：旗5优661;种植表现;高产;抗稻瘟病;制種技术

中图分类号：S 511文献标志码：A文章编号：0253-2301（2021）02-0051-04

DOI： 1013651/jcnkifjnykj202102010

Cultivation Characteristics and Highyield Seed Production Techniques of

Hybrid Rice Variety Qi 5 You 661 as Late Rice in Fujian

HE Niqing， FANG Shanru， SHEN Weifeng， LIU Yuqin， ZHAO Mingfu

（Rice Research Institute， Fujian Academy of Agriculture Sciences， Fuzhou， Fujian 350018， China）

Abstract： Qi 5 you 661 is a new variety of hybrid rice bred by the combination of sterile line Qi 5A and restorer line Fuhui 661 in Rice Research Institute of Fujian Academy of Agricultural Sciences. This combination was characterized by regular population， strong tillering ability， good color turning in mature period， high seed setting percentage， high yield， excellent rice quality and good comprehensive resistance， etc. It has been examined and approved by Fujian Crop Variety Approval Committee （No.20200048） in 2020. The demonstration performance of Qi 5 you 661 in the plot experiment of late rice in Fujian Province from 2018 to 2019 was introduced in this paper， and the highyield cultivation technology and seed production technology of Qi 5 you 661 were summarized from the aspects of timely sowing， rational close planting， fertilizer and water management， pest control， regulation of flowering stage and isolation measures， so as to promote the popularization and application of this variety in Fujian Province.

Key words： Qi 5 you 661; Planting performance; High yield; Rice blast resistance; Seed production technology

水稻是世界上主要的粮食作物之一，随着国家经济水平的不断上升，优质稻米的需求量逐年增长。稻瘟病是我国发病率较高的水稻病害，可造成水稻减产10%～35%[1]。同时，稻瘟病还会造成稻米品质下降，影响稻米的口感及营养价值。传统调节栽培措施和喷洒杀菌药剂进行预防的方法对稻瘟病的防治作用有限，还会造成一定的环境污染，并提高水稻的生产成本。相比之下，选育和推广抗稻瘟病的水稻新品种更加经济有效，可以从根本上对稻瘟病进行防治，提高水稻的产量和品质。目前，我国科研人员已在培育抗稻瘟病优质品种上取得一定的成绩[2-3]。

旗5优661是福建省农业科学院水稻研究所用具有较强抗稻瘟病能力的不育系旗5A与恢复系福恢661进行配组育成的杂交水稻新品种。……