作物種類：水稻

      審定編號：桂審稻2025042號

      品種名稱：美香優郁香

      申 請 者：南寧谷源豐種業(ye)有(you)限公司

      育 種 者：南寧谷(gu)源豐(feng)種業有限公(gong)司

      品種來源：美(mei)香A×郁香

      特征特性：感(gan)溫型(xing)三系雜交水稻(dao)(dao)品種(zhong)。在桂中(zhong)、桂北種(zhong)植，全生(sheng)育(yu)期早稻(dao)(dao)平(ping)均123.6天(tian)(tian)，比(bi)對(dui)照五(wu)優(you)308長(chang)1.8天(tian)(tian)，晚稻(dao)(dao)平(ping)均109.8天(tian)(tian)，比(bi)對(dui)照天(tian)(tian)優(you)華占短0.2天(tian)(tian)；在桂南種(zhong)植，全生(sheng)育(yu)期早稻(dao)(dao)平(ping)均121.2天(tian)(tian)，比(bi)對(dui)照特優(you)7118短3.8天(tian)(tian)，晚稻(dao)(dao)平(ping)均108.2天(tian)(tian)，比(bi)對(dui)照豐田(tian)優(you)553短6.2天(tian)(tian)。葉(xie)(xie)(xie)鞘綠色(se)、葉(xie)(xie)(xie)片深綠色(se)，穗(sui)芒有，穗(sui)芒分布上部3/4，穗(sui)最(zui)長(chang)芒長(chang)度(du)極短到(dao)短，芒顏(yan)色(se)(初期)白(bai)色(se)，(后期)淺黃(huang)色(se)，劍葉(xie)(xie)(xie)葉(xie)(xie)(xie)片卷曲類型(xing)正卷；柱頭、穎尖(jian)均為(wei)白(bai)色(se)，穎殼淺黃(huang)色(se)；谷(gu)粒長(chang)9.9毫(hao)米(mi)(mi)(mi)(mi)(mi)(mi)，長(chang)寬比(bi)4.0。每畝有效(xiao)穗(sui)數18.5萬，株(zhu)高111.8厘米(mi)(mi)(mi)(mi)(mi)(mi)，穗(sui)長(chang)22.2厘米(mi)(mi)(mi)(mi)(mi)(mi)，每穗(sui)總粒數170.0粒，結(jie)實率85.2%，千(qian)粒重(zhong)20.5克。抗性(xing)表(biao)現：稻(dao)(dao)瘟(wen)病(bing)(bing)綜(zong)合(he)(he)指數年(nian)度(du)分別(bie)是4.0、5.5，穗(sui)瘟(wen)損失(shi)率最(zui)高級(ji)5級(ji)；白(bai)葉(xie)(xie)(xie)枯病(bing)(bing)年(nian)度(du)分別(bie)為(wei)5級(ji)、5級(ji)；抗性(xing)評價為(wei)中(zhong)感(gan)稻(dao)(dao)瘟(wen)病(bing)(bing)、中(zhong)感(gan)白(bai)葉(xie)(xie)(xie)枯病(bing)(bing)。米(mi)(mi)(mi)(mi)(mi)(mi)質(zhi)(zhi)主要指標(2023年(nian))：糙米(mi)(mi)(mi)(mi)(mi)(mi)率81.8%，整精米(mi)(mi)(mi)(mi)(mi)(mi)率61.2%，堊白(bai)度(du)0.1%，堊白(bai)粒率1%，透(tou)明度(du)2級(ji)，堿消值(zhi)6.8級(ji)，膠稠度(du)72毫(hao)米(mi)(mi)(mi)(mi)(mi)(mi)，直鏈淀粉含量15.4%，粒長(chang)7.3毫(hao)米(mi)(mi)(mi)(mi)(mi)(mi)，長(chang)寬比(bi)4.3，精米(mi)(mi)(mi)(mi)(mi)(mi)率71.7%，符合(he)(he)NY/T 593-2021《食用稻(dao)(dao)品種(zhong)品質(zhi)(zhi)》優(you)質(zhi)(zhi)二等食用長(chang)粒形秈(xian)稻(dao)(dao)品種(zhong)品質(zhi)(zhi)規(gui)定要求；香味綜(zong)合(he)(he)評分77分，符合(he)(he)NY/T 596-2002《香稻(dao)(dao)米(mi)(mi)(mi)(mi)(mi)(mi)》香味標準。

      產量表現：根據廣西(xi)“兆和”水稻(dao)(dao)聯合(he)體試驗資(zi)料，2023年(nian)(nian)參加廣西(xi)晚(wan)稻(dao)(dao)中(zhong)遲(chi)熟組區(qu)域試驗初試，平均畝(mu)產(chan)(chan)(chan)523.8公(gong)(gong)斤(jin)(jin)(jin)(jin)，比(bi)(bi)(bi)對照(zhao)(zhao)天(tian)優華占(zhan)(zhan)增(zeng)(zeng)產(chan)(chan)(chan)2.93%；2024年(nian)(nian)續試，平均畝(mu)產(chan)(chan)(chan)514.9公(gong)(gong)斤(jin)(jin)(jin)(jin)，比(bi)(bi)(bi)對照(zhao)(zhao)天(tian)優華占(zhan)(zhan)增(zeng)(zeng)產(chan)(chan)(chan)3.63%；兩年(nian)(nian)區(qu)域試驗平均畝(mu)產(chan)(chan)(chan)519.4公(gong)(gong)斤(jin)(jin)(jin)(jin)，比(bi)(bi)(bi)對照(zhao)(zhao)天(tian)優華占(zhan)(zhan)增(zeng)(zeng)產(chan)(chan)(chan)3.28%；2024年(nian)(nian)晚(wan)稻(dao)(dao)生產(chan)(chan)(chan)試驗平均畝(mu)產(chan)(chan)(chan)527.1公(gong)(gong)斤(jin)(jin)(jin)(jin)，比(bi)(bi)(bi)對照(zhao)(zhao)天(tian)優華占(zhan)(zhan)增(zeng)(zeng)產(chan)(chan)(chan)5.57%。2024年(nian)(nian)桂中(zhong)、桂北(bei)早稻(dao)(dao)生產(chan)(chan)(chan)試驗平均畝(mu)產(chan)(chan)(chan)509.6公(gong)(gong)斤(jin)(jin)(jin)(jin)，比(bi)(bi)(bi)對照(zhao)(zhao)五優308增(zeng)(zeng)產(chan)(chan)(chan)4.03%；桂南(nan)早稻(dao)(dao)生產(chan)(chan)(chan)試驗平均畝(mu)產(chan)(chan)(chan)509.6公(gong)(gong)斤(jin)(jin)(jin)(jin)，比(bi)(bi)(bi)對照(zhao)(zhao)特優7118增(zeng)(zeng)產(chan)(chan)(chan)4.13%；桂南(nan)晚(wan)稻(dao)(dao)生產(chan)(chan)(chan)試驗平均畝(mu)產(chan)(chan)(chan)480.1公(gong)(gong)斤(jin)(jin)(jin)(jin)，比(bi)(bi)(bi)對照(zhao)(zhao)豐田優553增(zeng)(zeng)產(chan)(chan)(chan)3.69%。

      栽培技術要點：1.適時播(bo)種(zhong)(zhong)(zhong)，培(pei)育壯(zhuang)秧(yang)(yang)：早稻(dao)(dao)桂(gui)南3月(yue)上(shang)旬(xun)、桂(gui)中(zhong)(zhong)3月(yue)中(zhong)(zhong)旬(xun)、桂(gui)北(bei)(bei)3旬(xun)下(xia)旬(xun)播(bo)種(zhong)(zhong)(zhong)，薄膜覆(fu)蓋(gai)；晚稻(dao)(dao)桂(gui)南7月(yue)15日前、桂(gui)中(zhong)(zhong)7月(yue)5日前、桂(gui)北(bei)(bei)6月(yue)底前播(bo)種(zhong)(zhong)(zhong)。每畝大田用(yong)種(zhong)(zhong)(zhong)量(liang)1.0～1.5公(gong)(gong)(gong)斤。每畝秧(yang)(yang)田播(bo)種(zhong)(zhong)(zhong)量(liang)10～12公(gong)(gong)(gong)斤，稀播(bo)勻(yun)播(bo)，培(pei)育壯(zhuang)秧(yang)(yang)。2.合理密(mi)植，適時移栽：每畝插(cha)(cha)(cha)(拋(pao))秧(yang)(yang)1.8～2.0萬(wan)蔸；秧(yang)(yang)苗葉(xie)齡3.0～3.5葉(xie)開(kai)始拋(pao)栽，4.0～4.5葉(xie)開(kai)始插(cha)(cha)(cha)秧(yang)(yang)；或秧(yang)(yang)齡早稻(dao)(dao)20～25天(tian)(tian)、晚稻(dao)(dao)15～20天(tian)(tian)插(cha)(cha)(cha)(拋(pao))栽。3.科學水(shui)(shui)肥管理：畝施(shi)(shi)(shi)純氮(dan)(dan)10～12公(gong)(gong)(gong)斤，五氧化二磷(lin) 12～15公(gong)(gong)(gong)斤，氧化鉀 18～22公(gong)(gong)(gong)斤，氮(dan)(dan)、磷(lin)、鉀合理搭配施(shi)(shi)(shi)用(yong)，施(shi)(shi)(shi)足(zu)基肥，早施(shi)(shi)(shi)重施(shi)(shi)(shi)分(fen)蘗(bo)肥，多施(shi)(shi)(shi)鉀肥，中(zhong)(zhong)后期應創造條(tiao)件(jian)施(shi)(shi)(shi)酌施(shi)(shi)(shi)穗(sui)肥；水(shui)(shui)份管理：淺水(shui)(shui)移栽，薄水(shui)(shui)分(fen)蘗(bo)，夠(gou)苗露(lu)曬田，干(gan)干(gan)濕濕到(dao)成熟；4.病(bing)蟲(chong)害(hai)防治：及時做好稻(dao)(dao)瘟病(bing)、稻(dao)(dao)曲病(bing)、矮縮(suo)病(bing)、稻(dao)(dao)飛虱(shi)等病(bing)蟲(chong)害(hai)的防治。

      審定意見：該品種(zhong)符合廣(guang)西稻品種(zhong)審定(ding)標準，通過審定(ding)。可在(zai)桂(gui)中、桂(gui)北和桂(gui)南稻作(zuo)區作(zuo)早、晚稻種(zhong)植；在(zai)桂(gui)北稻作(zuo)區作(zuo)晚稻種(zhong)植應(ying)在(zai)6月25日前播種(zhong)。注意稻瘟病(bing)、白葉枯(ku)病(bing)等(deng)病(bing)蟲害的(de)防治。