早熟水稻品种的再生特性及留桩高度对产量的影响  

Effects of Regenerative Characteristics and Pile Height on Yield of Early Maturing Rice Cultivars

作　　者：陈云风[1] 郑明翔 叶小牛 曹祖富 时世华 陈佳慧 CHEN Yun-feng;ZHENG Ming-xiang;YE Xiao-niu;CAO Zu-fu;SHI Shi-hua;CHEN Jia-hui(College of Life Science,Yichun University,Yichun 336000,China;Yichun Academy of Sciences,Yichun 336000,China;Jiangxi Fenglong Seed Industry Co.,Ltd.,Yichun 336000,China;Jiangxi Kenongwo Technology Co.,Ltd.,Yichun 336000,China)

机构地区：[1]宜春学院生命科学与资源环境学院,江西宜春336000 [2]宜春市科学院,江西宜春336000 [3]江西丰隆种业有限公司,江西宜春336000 [4]江西科农沃科技责任有限公司,江西宜春336000

出　　处：《宜春学院学报》2023年第9期88-90,117,共4页Journal of Yichun University

基　　金：江西省重点研发项目(编号:20202BBFL63003);江西省教育厅项目(编号:GJJ211641)。

摘　　要：再生稻是提高田间复种指数、增加水稻总产量的重要途径,为丰富早熟再生稻的研究内容,探究早熟水稻品种的再生特性以及适宜的留桩高度。本研究以两优336、双直一号、香53、香27为材料,其中两优336为对照,再生季设置5种留桩高度3~5 cm、8~13 cm、18~23 cm、28~33 cm、38~43 cm,考察与测定再生苗的生长发育能力和再生稻的产量。结果表明:不同水稻品种头季稻和再生稻生育期差异显著;相同品种的不同留桩高度处理下,再生稻的生育期和产量差异显著,留桩高度在一定程度上影响再生稻的生育期,生育期随留桩高度的增加表现出缩短趋势。在香53、香27、双直一号在留桩18~23 cm再生稻产量最高,两优336在留桩28~33 cm再生稻产量最高。Ratooning rice,an important strategy for augmenting the field replanting index and overall rice yield,is the focus of this study.Specifically,we examined the regrowth traits of early maturing rice varieties and sought to determine the optimal stubble height.Our research incorporated four varieties:LY 336,SZ 1,X 53,and X 27,with LY 336 serving as the control.Five different stubble heights were established for the ratooning season:3~5 cm,8~13 cm,18~23 cm,28~33 cm,and 38~43 cm.We assessed the regrowth potential of the ratoon seedlings and recorded the resultant ratoon rice yield.Our findings indicated a marked disparity in the growth periods of the first-season rice and the ratoon rice across all tested varieties.Stubble height was found to significantly influence both the growth period and yield of the ratoon rice.Specifically,an increase in stubble height appeared to correspond with a shortened growth period.The most favorable yields for X 53,X 27,and SZ 1 were achieved with a stubble height of 18~23 cm,while for LY 336,the optimal stubble height for ratoon yield was found to be 28~33 cm.

关 键 词：品种 再生稻 留桩高度 产量 

分 类 号：S333[农业科学—作物遗传育种]