作物種類：水稻

      審定編號：桂審稻2025040號

      品種名稱：沉香優908

      申 請 者：南寧谷(gu)源豐種業有限(xian)公(gong)司

      育 種 者：南(nan)寧谷源豐種(zhong)業有限公司

      品種來源：沉香A×HR908

      特征特性：感(gan)溫型三系雜交水稻(dao)(dao)(dao)品種(zhong)(zhong)。在(zai)桂中、桂北種(zhong)(zhong)植，全(quan)生(sheng)育期(qi)早稻(dao)(dao)(dao)平(ping)均(jun)(jun)123.4天(tian)(tian)，比對(dui)照(zhao)(zhao)(zhao)五優(you)308長(chang)(chang)(chang)(chang)(chang)1.4天(tian)(tian)，晚稻(dao)(dao)(dao)平(ping)均(jun)(jun)108.1天(tian)(tian)，比對(dui)照(zhao)(zhao)(zhao)天(tian)(tian)優(you)華占短(duan)1.9天(tian)(tian)；在(zai)桂南(nan)種(zhong)(zhong)植，全(quan)生(sheng)育期(qi)早稻(dao)(dao)(dao)平(ping)均(jun)(jun)120.4天(tian)(tian)，比對(dui)照(zhao)(zhao)(zhao)特優(you)7118短(duan)4.6天(tian)(tian)，晚稻(dao)(dao)(dao)平(ping)均(jun)(jun)107.2天(tian)(tian)，比對(dui)照(zhao)(zhao)(zhao)豐(feng)田優(you)553短(duan)7.2天(tian)(tian)。葉鞘綠(lv)色(se)(se)、葉片中綠(lv)色(se)(se)，劍葉葉片不卷(juan)或微卷(juan)；柱頭(tou)、穎(ying)(ying)尖均(jun)(jun)為(wei)白(bai)(bai)色(se)(se)，穎(ying)(ying)殼淺黃(huang)色(se)(se)，穗(sui)(sui)芒有(you)(you)，穗(sui)(sui)芒分(fen)(fen)布上部1/2，穗(sui)(sui)最(zui)長(chang)(chang)(chang)(chang)(chang)芒長(chang)(chang)(chang)(chang)(chang)度(du)極短(duan)，芒顏(yan)色(se)(se)(初期(qi))白(bai)(bai)色(se)(se)，芒顏(yan)色(se)(se)(后期(qi))淺黃(huang)色(se)(se)；谷粒(li)(li)長(chang)(chang)(chang)(chang)(chang)10.6毫米(mi)，長(chang)(chang)(chang)(chang)(chang)寬(kuan)比4.8。每畝有(you)(you)效穗(sui)(sui)數(shu)18.6萬(wan)，株高107.1厘(li)米(mi)，穗(sui)(sui)長(chang)(chang)(chang)(chang)(chang)22.7厘(li)米(mi)，每穗(sui)(sui)總粒(li)(li)數(shu)153.3粒(li)(li)，結實率(lv)(lv)86.9%，千粒(li)(li)重(zhong)23.2克。抗(kang)性表現：稻(dao)(dao)(dao)瘟(wen)病(bing)綜(zong)合(he)(he)(he)指數(shu)年(nian)度(du)分(fen)(fen)別是4.8、5.5，穗(sui)(sui)瘟(wen)損(sun)失率(lv)(lv)最(zui)高級(ji)5級(ji)；白(bai)(bai)葉枯病(bing)年(nian)度(du)分(fen)(fen)別為(wei)7級(ji)、7級(ji)；抗(kang)性評價為(wei)中感(gan)稻(dao)(dao)(dao)瘟(wen)病(bing)、感(gan)白(bai)(bai)葉枯病(bing)。米(mi)質(zhi)主要(yao)指標(2023年(nian))：糙米(mi)率(lv)(lv)82.8%，整(zheng)精(jing)米(mi)率(lv)(lv)59.3%，堊(e)白(bai)(bai)度(du)0.2%，堊(e)白(bai)(bai)粒(li)(li)率(lv)(lv)2%，透(tou)明度(du)2級(ji)，堿消值6.6級(ji)，膠稠度(du)70毫米(mi)，直鏈淀粉含量14.0%，粒(li)(li)長(chang)(chang)(chang)(chang)(chang)7.4毫米(mi)，長(chang)(chang)(chang)(chang)(chang)寬(kuan)比4.4，精(jing)米(mi)率(lv)(lv)72.2%，符合(he)(he)(he)NY/T 593-2021《食用(yong)(yong)稻(dao)(dao)(dao)品種(zhong)(zhong)品質(zhi)》優(you)質(zhi)二等(deng)食用(yong)(yong)長(chang)(chang)(chang)(chang)(chang)粒(li)(li)形秈稻(dao)(dao)(dao)品種(zhong)(zhong)品質(zhi)規定要(yao)求(qiu)；香(xiang)味綜(zong)合(he)(he)(he)評分(fen)(fen)77分(fen)(fen)，符合(he)(he)(he)NY/T 596-2002《香(xiang)稻(dao)(dao)(dao)米(mi)》香(xiang)味標準。

      產量表現：根(gen)據(ju)廣(guang)(guang)西“兆(zhao)和”水稻(dao)聯合體試(shi)(shi)(shi)驗(yan)資料，2023年(nian)參加廣(guang)(guang)西晚(wan)稻(dao)中遲熟(shu)組(zu)區域試(shi)(shi)(shi)驗(yan)初試(shi)(shi)(shi)，平(ping)均畝(mu)產(chan)(chan)(chan)(chan)(chan)516.9公(gong)斤，比(bi)對(dui)照(zhao)(zhao)(zhao)天(tian)優(you)(you)(you)華占(zhan)增(zeng)產(chan)(chan)(chan)(chan)(chan)1.58%；2024年(nian)續(xu)試(shi)(shi)(shi)，平(ping)均畝(mu)產(chan)(chan)(chan)(chan)(chan)520.4公(gong)斤，比(bi)對(dui)照(zhao)(zhao)(zhao)天(tian)優(you)(you)(you)華占(zhan)增(zeng)產(chan)(chan)(chan)(chan)(chan)4.73%；兩年(nian)區域試(shi)(shi)(shi)驗(yan)平(ping)均畝(mu)產(chan)(chan)(chan)(chan)(chan)518.7公(gong)斤，比(bi)對(dui)照(zhao)(zhao)(zhao)天(tian)優(you)(you)(you)華占(zhan)增(zeng)產(chan)(chan)(chan)(chan)(chan)3.16%；2024年(nian)晚(wan)稻(dao)生(sheng)產(chan)(chan)(chan)(chan)(chan)試(shi)(shi)(shi)驗(yan)平(ping)均畝(mu)產(chan)(chan)(chan)(chan)(chan)519.2公(gong)斤，比(bi)對(dui)照(zhao)(zhao)(zhao)天(tian)優(you)(you)(you)華占(zhan)增(zeng)產(chan)(chan)(chan)(chan)(chan)3.77%。2024年(nian)桂中、桂北早稻(dao)生(sheng)產(chan)(chan)(chan)(chan)(chan)試(shi)(shi)(shi)驗(yan)平(ping)均畝(mu)產(chan)(chan)(chan)(chan)(chan)503.6公(gong)斤，比(bi)對(dui)照(zhao)(zhao)(zhao)五優(you)(you)(you)308增(zeng)產(chan)(chan)(chan)(chan)(chan)3.35%；桂南(nan)早稻(dao)生(sheng)產(chan)(chan)(chan)(chan)(chan)試(shi)(shi)(shi)驗(yan)平(ping)均畝(mu)產(chan)(chan)(chan)(chan)(chan)503.6公(gong)斤，比(bi)對(dui)照(zhao)(zhao)(zhao)特優(you)(you)(you)7118增(zeng)產(chan)(chan)(chan)(chan)(chan)3.31%；桂南(nan)晚(wan)稻(dao)生(sheng)產(chan)(chan)(chan)(chan)(chan)試(shi)(shi)(shi)驗(yan)平(ping)均畝(mu)產(chan)(chan)(chan)(chan)(chan)471.3公(gong)斤，比(bi)對(dui)照(zhao)(zhao)(zhao)豐田優(you)(you)(you)553增(zeng)產(chan)(chan)(chan)(chan)(chan)3.28%。

      栽培技術要點：1.適(shi)(shi)時(shi)(shi)播(bo)(bo)種(zhong)，培育壯秧(yang)：早稻(dao)桂(gui)(gui)南3月上旬、桂(gui)(gui)中3月中旬、桂(gui)(gui)北(bei)3旬下旬播(bo)(bo)種(zhong)，薄膜覆蓋；晚(wan)稻(dao)桂(gui)(gui)南7月15日(ri)前(qian)、桂(gui)(gui)中7月5日(ri)前(qian)、桂(gui)(gui)北(bei)6月底前(qian)播(bo)(bo)種(zhong)。每畝大(da)田(tian)用種(zhong)量1.0～1.5公斤(jin)；稀播(bo)(bo)勻播(bo)(bo)，培育壯秧(yang)。2.合(he)理密植，適(shi)(shi)時(shi)(shi)移栽：每畝插(cha)(拋)秧(yang)1.8～2.0萬蔸，秧(yang)苗(miao)葉(xie)(xie)齡3.0～3.5葉(xie)(xie)開始拋栽；4.0～4.5葉(xie)(xie)開始插(cha)秧(yang)；3.科學水肥(fei)(fei)管理：增施(shi)有機肥(fei)(fei)，中等(deng)肥(fei)(fei)力田(tian)塊畝總施(shi)肥(fei)(fei)量10～12公斤(jin)純(chun)氮，N:P:K 按1.0:0.7:1.0 配(pei)合(he)施(shi)用；采(cai)用前(qian)促中穩(wen)后補施(shi)肥(fei)(fei)方法，施(shi)足基肥(fei)(fei)，早施(shi)重施(shi)分(fen)蘗肥(fei)(fei)，前(qian)期施(shi)肥(fei)(fei)量占總肥(fei)(fei)量85%～95%；水份管理：淺(qian)水移栽，薄水分(fen)蘗，夠苗(miao)露曬田(tian)，干干濕(shi)濕(shi)到成熟；4.病(bing)(bing)蟲(chong)害(hai)防(fang)治(zhi)：及時(shi)(shi)做好(hao)稻(dao)瘟病(bing)(bing)、稻(dao)曲病(bing)(bing)、矮(ai)縮病(bing)(bing)、稻(dao)飛虱等(deng)病(bing)(bing)蟲(chong)害(hai)的防(fang)治(zhi)；5.適(shi)(shi)時(shi)(shi)收割(ge)，提高稻(dao)米品質。

      審定意見：該品種(zhong)(zhong)符合廣西稻(dao)品種(zhong)(zhong)審定標準，通過審定。可在(zai)桂(gui)(gui)中(zhong)、桂(gui)(gui)北(bei)和桂(gui)(gui)南稻(dao)作(zuo)區作(zuo)早(zao)、晚(wan)稻(dao)種(zhong)(zhong)植；在(zai)桂(gui)(gui)北(bei)稻(dao)作(zuo)區作(zuo)晚(wan)稻(dao)種(zhong)(zhong)植應在(zai)6月25日前播種(zhong)(zhong)。注(zhu)意稻(dao)瘟病(bing)、白(bai)葉枯(ku)病(bing)等(deng)病(bing)蟲害的防治。