优质稻-丝香1号-的选育及高产栽培技术.pdf

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1、广西农业科学2010，41(2)：120-121GuangxiAgricultⅢ,'．1Sciences优质稻“丝香1号”的选育及高产栽培技术何俊，莫振勇，莫桂林，梁劲(玉林市农业科学研究所，广西玉林537000)摘要：“丝香l号”是以从广东农业科学院引进的“丝苗香”为母本、性状优良株系“608号”为父本(西山香×桂99的选育株系)进行杂交，并经多年多代系统选育而成的感温型常规优质稻新品种。其特征特性表现为：生育期早造124d左右，晚造107d左右；综合农艺性状好，株型集散适中，每穗总粒数130．4粒，结实率82．0％，千粒重23．29；适应性较广，易获得高

2、产稳产，在2006-2007年区试中，产量为6401．10～6806．25kg／ha；米质优，整精米率、垩白粒率、胶稠度等5项指标达农业部部颁优质米一级标准；糙米率、透明度、垩白度等5项指标达二级标准。其高产栽培要求适时播种，培育壮秧；适时移栽，合理密植；科学调控水肥及防治病虫害。关键词：优质稻；丝香1号；选育；特征特性；高产栽培中图分类号：$511．048文献标识码：B文章编号：1002—8161(2010)02-0120-02Breedingfornewrice‘‘Sixiang1andhighyieldreeOinganewrlcevarietyIi-

3、yielcultivationtechniquesHEJun，MOZhen—yong，MOGui—lin，LlANGJing(YulinInstituteofAgriculturalSciences，Yuhn，Guangxi537000，China)Abstract：Sixiang1，anewthermo-sensitiveconventionalricevarietywithgoodgrainquality，bredbycrossingbe-tween“Simiaoxiang”(femaleparent，introducedfromGuangdongAca

4、demyofAgriculturalSciences)andthericestrain“608”(maleparentderivedfromXishanxiangxGui99)aftermanygenerationsofselectivebreedingprocess．Sixianglischaracterizedby124daysofgrowthdurationforearlyriceand107daysofgrowthdurationforlaterice，goodcomprehen—siveagronomictraits，moderateplantty

5、pe，onallaverageabout130．4totalgrainsperpanicle，82．0％ofseedsettingrateand23．2gof1000一grainweight．Thevarietyshowedwideadaptability。stabilityandhighyieldqualities．TheyieldofSixiang1rangedfrom6401．10tO6806．25ks／hainGuangxiregionaltrialduring2006-2007．Sixianglshowedgoodgrainqualityandit

6、sindicesv／z．，headricerate，chalkyricerate，gelconsistencyreachedthefirstgradegoodgrinqualityricestandardsetupbyMinistryofAgriculture，andbrownricerate，transparencyandchalkinessdegreereachedthesecondgradestandard．ThehighyieldcultivationtechniquesofSixiang1were鹊follows：sowingtimeforearl

7、yriceduringthefirstten-dayofMarchandforthelatericeduringthefirstten—dayofJuly)，cultivatingstrongseedling，timelytransplant-ing(25daysofseedlingage)，reasonableplantingdensity(basicseedlingsnumberfortransplantingandthrowingwas1．20一1．50x106／haand1．05一1．35x106／ha，respectively)，scientifi

8、capplicationoffertihzerand