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1、中国水稻科学(ChinJRiceSci),２０１６,３０(５):５３２－５４０http://www．ricesci．cn５３２DOI:１０．１６８１９/j．１００１Ｇ７２１６．２０１６．６０６８氮肥用量和播期对优良食味粳稻直链淀粉含量的影响姚姝于新周丽慧陈涛赵庆勇朱镇张亚东赵春芳赵凌王才林∗(江苏省农业科学院粮食作物研究所,江苏省优质水稻工程技术研究中心,国家水稻改良中心南京分中心,南京２１００１４;∗通讯联系人,EＧmail:clwang＠jaas．ac．cn)AmyloseContentinGood
2、EatingQualityRiceUnderDifferentNitrogenRatesandSowingDatesYAOShu,YUXin,ZHOULiＧhui,CHENTao,ZHAOQingＧyong,ZHUZhen,ZHANGYaＧdong,ZHAOChunＧfang,ZHAOLing,WANGCaiＧlin∗(InstituteofFoodCrops,JiangsuAcademyofAgriculturalSciences,JiangsuHighQualityRiceR&DCenter,Nan
3、jingBranchofChinaNationalCenterforRiceImprovement,Nanjing２１００１４,China;∗Correspondingauthor,EＧmail:clwang＠jaas．acc．n)YAOShu,YUXin,ZHOULihui,etal．Amylosecontentingoodeatingqualityriceunderdifferentnitrogenratesandsowingdates．ChinJRiceSci,２０１６,３０(５):５３２Ｇ５４０
4、．Abstract:Theamylosecontentingoodeatingqualityricewasinvestigatedunderfournitrogenapplicationlevels２),medium(３００kg/hm２),low(１５０kg/hm２)andzero(CK)levels,differentsowingdatesincludinghigh(４５０kg/hmandshortdaylighttreatmentbyusingthesemiＧglutinousnewjaponica
5、ricevarieties(strains)withdifferentamylosecontentin２０１３and２０１４．Theresultsshowedthatthelevelofnitrogenfertilizerhasasignificanteffectonamylosecontentofgoodeatingqualityjaponicarice．Theamylosecontentwasdecreasedwiththeincreasinglevelofnitrogenfertilizer．Th
6、eamylosecontentunderthehighnitrogenlevelwasthelowestinthetwoyears．Sowingdatehasasignificantinfluenceonamylosecontentofgoodeatingqualityjaponicarice．Theamylosecontentwasdecreasedwiththesowingdatepostponed．Theeffectofsowingdateonamylosecontentwasrelatedtot
7、hetemperatureduring６－１５daysafterheading,andhightemperatureresultedintheincreaseofamylosecontent．Thiswasalsoconfirmedundertheshortdaylighttreatment．Keywords:nitrogenapplicationlevel;sowingdate;goodeatingqualityjaponicarice;amylosecontent姚姝,于新,周丽慧,等．氮肥用量和播
8、期对优良食味粳稻直链淀粉含量的影响．中国水稻科学,２０１６,３０(５):５３２Ｇ５４０．摘要:以直链淀粉含量不同的半糯粳稻新品种(系)为材料,设置高氮(４５０kg/hm２)、中氮(３００kg/hm２)、低氮(１５０kg/２)和不施肥(CK)４个氮肥水平,分期播种并进行短日照处理,研究了氮肥用量和播期对优良食味粳稻直链淀粉含量的影hm响.结果表明,氮肥用量对优良食味粳稻的直链淀粉含量有显著影响,随着氮肥用量的增加,直链淀粉含量有降低的趋势,两
