品種名稱(cheng)：南(nan)粳優293

 ;     申 請 者：江蘇省農業科學院糧食(shi)作物研究所

      育 種 者：江蘇省農業科學院糧食作(zuo)物研究所

   ;   品種(zhong)來源：南粳(jing)01A×R293，參試名稱(cheng)“23優293”

      特(te)征特(te)性(xing)(xing)：三系雜交晚粳稻(dao)(dao)品(pin)種(zhong)。植株清(qing)秀，株型(xing)集散適(shi)中(zhong)(zhong)，生長(chang)勢(shi)旺，豐產性(xing)(xing)好(hao)，莖稈基(ji)部(bu)節間粗密，葉(xie)片中(zhong)(zhong)綠，葉(xie)姿挺(ting)，分蘗(bo)力強，群體整齊(qi)度(du)(du)好(hao)，穗(sui)型(xing)大，粒(li)重高，著粒(li)適(shi)中(zhong)(zhong)，落粒(li)性(xing)(xing)中(zhong)(zhong)等，抗倒性(xing)(xing)強。聯合體區試平均結果：全生育期156.9天，比對照甬優8號短(duan)4.9天，比對照甬優1540短(duan)7.0天。株高115.1厘米(mi)(mi)，每畝有效穗(sui)18.8萬，每穗(sui)總(zong)粒(li)數(shu)172.0粒(li)，結實率(lv)94.5%，千粒(li)重28.4克。經江蘇(su)省(sheng)農(nong)(nong)業(ye)科學(xue)院植保(bao)所鑒(jian)定(ding)：穗(sui)頸瘟損失率(lv)3級(ji)(ji)，稻(dao)(dao)瘟病綜合抗性(xing)(xing)指數(shu)4.25，中(zhong)(zhong)感稻(dao)(dao)瘟病、白(bai)葉(xie)枯病和(he)條紋(wen)葉(xie)枯病，抗紋(wen)枯病。米(mi)(mi)質(zhi)理化指標(biao)根據(ju)農(nong)(nong)業(ye)農(nong)(nong)村部(bu)食(shi)品(pin)質(zhi)量監督檢驗(yan)測(ce)試中(zhong)(zhong)心（武漢）2019年(nian)檢測(ce)：整精米(mi)(mi)率(lv)69.4%，堊(e)白(bai)率(lv)16.0%，堊(e)白(bai)度(du)(du)1.5%，膠稠度(du)(du)66毫米(mi)(mi)，直(zhi)鏈淀粉含(han)量17.3%，長(chang)寬(kuan)比2.0，達(da)到農(nong)(nong)業(ye)行業(ye)《食(shi)用稻(dao)(dao)品(pin)種(zhong)品(pin)質(zhi)》標(biao)準三級(ji)(ji)。

      產(chan)量(liang)表現(xian)：2018~2019年(nian)參(can)加江蘇省雜交晚粳常熟農科所(suo)科企聯合體區(qu)試，2018年(nian)平均(jun)畝(mu)(mu)產(chan)806.2公斤(jin)，比(bi)對(dui)照(zhao)甬(yong)優(you)8號增(zeng)產(chan)4.9%，2019年(nian)平均(jun)畝(mu)(mu)產(chan)895.7公斤(jin)，比(bi)對(dui)照(zhao)甬(yong)優(you)1540增(zeng)產(chan)3.2%。2020年(nian)參(can)加生產(chan)試驗，平均(jun)畝(mu)(mu)產(chan)832.1公斤(jin)，比(bi)對(dui)照(zhao)甬(yong)優(you)1540增(zeng)產(chan)5.0%。

      栽(zai)(zai)培技術要(yao)點：1、適(shi)(shi)時播(bo)(bo)種(zhong)(zhong)，培育壯秧(yang)(yang)(yang)(yang)(yang)。5月(yue)10~20日落谷(gu)，每(mei)畝(mu)大田(tian)(tian)用(yong)(yong)種(zhong)(zhong)量1~1.5公斤。濕潤(run)(run)育秧(yang)(yang)(yang)(yang)(yang)凈(jing)秧(yang)(yang)(yang)(yang)(yang)板(ban)落谷(gu)量10~15公斤，旱育秧(yang)(yang)(yang)(yang)(yang)凈(jing)樣板(ban)落谷(gu)量20~25公斤，秧(yang)(yang)(yang)(yang)(yang)齡30~35天；塑盤育秧(yang)(yang)(yang)(yang)(yang)每(mei)盤落谷(gu)120~130克，秧(yang)(yang)(yang)(yang)(yang)齡18~20天。秧(yang)(yang)(yang)(yang)(yang)田(tian)(tian)應施(shi)(shi)足基(ji)肥(fei)(fei)，秧(yang)(yang)(yang)(yang)(yang)苗期要(yao)重(zhong)視(shi)肥(fei)(fei)水管理(li)和(he)病(bing)蟲(chong)防(fang)(fang)治(zhi)(zhi)，培育帶蘗壯秧(yang)(yang)(yang)(yang)(yang)。2、適(shi)(shi)時移栽(zai)(zai)，合(he)(he)理(li)密植。6月(yue)中(zhong)(zhong)下旬適(shi)(shi)時移栽(zai)(zai)，每(mei)畝(mu)栽(zai)(zai)插(cha)1.6萬~1.7萬穴，每(mei)穴栽(zai)(zai)3~4苗，每(mei)畝(mu)基(ji)本(ben)苗5萬~6萬。3、科(ke)學肥(fei)(fei)水管理(li)。畝(mu)施(shi)(shi)純氮20公斤左右，肥(fei)(fei)料(liao)運籌(chou)上采取“前(qian)重(zhong)、中(zhong)(zhong)控、后(hou)(hou)補”的(de)(de)施(shi)(shi)肥(fei)(fei)原(yuan)則，并重(zhong)視(shi)磷鉀肥(fei)(fei)和(he)有機肥(fei)(fei)的(de)(de)配合(he)(he)施(shi)(shi)用(yong)(yong)。水漿管理(li)上，做到淺(qian)水栽(zai)(zai)插(cha)、寸水活棵、薄水分蘗，當莖蘗數達夠穗苗的(de)(de)80%時，及時分次擱田(tian)(tian)，后(hou)(hou)期干(gan)濕交替，養根保葉(xie)、濕潤(run)(run)到老，收割前(qian)一周斷水。4、綜(zong)合(he)(he)防(fang)(fang)治(zhi)(zhi)病(bing)蟲(chong)害。根據病(bing)蟲(chong)發生的(de)(de)動態，堅(jian)持預防(fang)(fang)為主，綜(zong)合(he)(he)防(fang)(fang)治(zhi)(zhi)的(de)(de)方針，播(bo)(bo)前(qian)用(yong)(yong)藥(yao)劑(ji)浸種(zhong)(zhong)防(fang)(fang)治(zhi)(zhi)惡苗病(bing)和(he)干(gan)尖(jian)線(xian)蟲(chong)病(bing)等(deng)種(zhong)(zhong)傳病(bing)害，秧(yang)(yang)(yang)(yang)(yang)田(tian)(tian)期和(he)大田(tian)(tian)期注意灰飛虱、稻(dao)(dao)薊馬的(de)(de)防(fang)(fang)治(zhi)(zhi)，中(zhong)(zhong)、后(hou)(hou)期注意螟蟲(chong)、白(bai)葉(xie)枯(ku)病(bing)、紋枯(ku)病(bing)、稻(dao)(dao)曲病(bing)、稻(dao)(dao)瘟病(bing)、稻(dao)(dao)飛虱等(deng)病(bing)蟲(chong)的(de)(de)防(fang)(fang)治(zhi)(zhi)工(gong)作。

      審定(ding)(ding)意見：通(tong)過(guo)審定(ding)(ding)，適宜在江蘇省(sheng)蘇南地區(qu)種植。