湖南地区早晚稻双季配套直播品种风险初探  

A Preliminary Study on the Risk of Varieties in Hunan Area for Double Season Direct Seeding Cultivation

作　　者：刘利成[1] 刘三雄[1] 闵军[1] 黎用朝[1] LIU Li-cheng;LIU San-xiong;MIN Jun;LI Yong-chao(Hunan Academy of Agricultural Science,Rice Research Institute,Changsha 410125,PRC)

机构地区：[1]湖南省农业科学院,湖南省水稻研究所,湖南长沙410125

出　　处：《湖南农业科学》2018年第10期26-28,共3页Hunan Agricultural Sciences

基　　金：湖南省重点研发计划(2016NK2187);湖南省农业科学院科技创新项目(2017JC14);国家现代农业产业技术体系体系项目(CARS-01-14)

摘　　要：对湖南地区应用较广的早稻品种进行早、晚双季直播试验。试验结果显示,较多的穗数、适中的穗子大小和较高的结实率有利于双季直播水稻的产量形成。湘早籼6号、湘早籼32号、湘丰早119和惠民2号作早季直播并配套"倒种春"晚季直播茬口搭配合适,产量中等,株型较矮,进行早、晚双季配套直播的风险相对较小。品种湘丰早119作早、晚双季直播种植,其生育期合适,株型较矮,产量较高。Early and late double-season direct seeding experiments were carried out on early rice varieties widely used in Hunan. The results showed that more panicle number, moderate ear size and higher seed setting rate were benefcial to the yield formation of double-season direct seed rice. Xiangzaoxian No.6, Xiangzaoxian No.32, Xiangfengzao No.119 and Huimin No.2 were suitable for early and late double-season direct seeding, with medium yield and short plant type. The risk of early and late double-season direct seeding was relatively small. Xiangfengzao No.119 was planted directly in early and late seasons. Its growth period was suitable, plant type was shorter and yield was higher.

关 键 词：水稻 直播 双季 风险 评价 

分 类 号：S511.42[农业科学—作物学]