娄底地区早籼常规稻品种筛选试验研究  

Study on Screening Experiment of Early Indica Conventional Rice Varieties in Loudi Region

作　　者：虢婷婷 刘桃李[1] 杜洁莹 龙心怡 彭建 Guo Tingting;Liu Taoli;Du Jieying;Long Xinyi;Peng Jian(Hunan University of Humanities,Science and Technology,Hunan Loudi 417001;Changde Academy of Agriculture and Forestry Sciences,Hunan Changde 415000)

机构地区：[1]湖南人文科技学院,湖南娄底417001 [2]常德市农林科学研究院,湖南常德415000

出　　处：《南方农机》2023年第20期17-19,57,共4页

基　　金：湖南省教育厅一般项目“水稻卷叶基因URL1的作用机制研究”(20C1034);湖南省教育厅一般项目“光照培养对籼稻成熟胚高效遗传转化的研究”(20C1041)。

摘　　要：【目的】为加快品种更新换代速度,扩大良种覆盖面,提高粮食产量和质量,有必要在不同生态型区域进行早稻品种筛选,优选良种是促进早稻生产的有效举措。【方法】2021年,课题组以中早35为对照品种,选取9个早稻品种,开展早稻高产优质品种田间比较试验,对不同品种早稻的多个农艺性状进行比较,筛选出适合娄底市双季稻区种植的早籼常规稻品种。【结果】1)参试品种中早57和金早香1号综合表现最好,不仅高产,生育期适宜,而且稻瘟病抗性较强。中早57亩产543 kg,全生育期109天,苗叶瘟发病级3级,穗颈瘟发病级5级,穗颈瘟损失率3级;金早香1号亩产524.3 kg,全生育期106天,苗叶瘟发病级3级,穗颈瘟发病级5级,穗颈瘟损失率1级。2)参试品种中嘉早17与中早77表现较好,亩产分别为532.7kg与511.9kg,全生育期均为109天,二者苗叶瘟发病级、穗颈瘟发病级与穗颈瘟损失率均分别为7级、5级与3级。【结论】中早57、中早77、中嘉早17与金早香1号田间综合表现较好,产量高于对照品种2.67%~8.90%,可作为适宜在娄底大规模推广的早稻品种,适当增加推广面积。[Objective]In order to accelerate the speed of variety renewal,expand the coverage of improved varieties,and improve grain yield and quality,it is necessary to screen early rice varieties in different ecological regions.Optimizing improved varieties is an effective measure to promote early rice production.[Method]In 2021,the research group selected Zhongzao 35 as the control variety,and then selected 9 early rice varieties to conduct field comparative experiments on high-yield and high-quality early rice varieties.Multiple agronomic traits of different early rice varieties were compared,and early indica conventional rice varieties suitable for planting in the double cropping rice area of Loudi City were selected.[Result]1)The tested varieties Zhongzao 57 and Jinzaoxiang 1 showed the best comprehensive performance,not only high yield,suitable growth period,but also strong resistance to rice blast.Zhongzao 57 produces 543 kg per mu,with a total growth period of 109 days.The disease level of seedling leaf blast is level 3,the disease level of ear neck blast is level 5,and the loss rate of ear neck blast is level 3.Jinzaoxiang 1 has a yield of 524.3 kg per mu,with a total growth period of 106 days.The disease level of seedling leaf blast is level 3,the disease level of ear neck blast is level 5,and the loss rate of ear neck blast is level 1.2)The tested varieties Zhongjiazao 17 and Zhongzao 77 performed well,with yields of 532.7 kg and 511.9 kg per mu,respectively,and a total growth period of 109 days.The incidence levels of seedling leaf blast,ear neck blast,and loss rates of ear neck blast are all level 7,level 5,and level 3,respectively.[Conclusion]Zhongzao 57,Zhongzao 77,Zhongjiazao 17 and Jinzaoxiang 1 showed good comprehensive field performance,with yields 2.67%to 8.90%higher than the control variety.They can be used as early rice varieties suitable for large-scale promotion in Loudi,and the promotion area should be appropriately increased.

关 键 词：双季稻区 常规早稻品种 田间筛选 

分 类 号：S511[农业科学—作物学]