品(pin)種名稱：皖(wan)墾粳4618

      申 請(qing) 者：安徽皖(wan)墾種業股份有限公司、揚(yang)州大(da)學

      育 種(zhong) 者：揚(yang)州(zhou)大學、安徽皖墾種(zhong)業股(gu)份有限公(gong)司

      品種來源：南(nan)粳46/武育粳18號

      特征特性：早熟(shu)(shu)晚粳稻(dao)早熟(shu)(shu)品(pin)種。苗期(qi)(qi)葉(xie)(xie)色(se)中(zhong)綠(lv)，葉(xie)(xie)姿較(jiao)挺(ting)，分蘗(bo)力較(jiao)強(qiang)，株(zhu)(zhu)型較(jiao)緊湊，植(zhi)株(zhu)(zhu)生長(chang)清(qing)秀，成熟(shu)(shu)期(qi)(qi)轉色(se)好，抗倒(dao)性強(qiang)。省區(qu)試平均結(jie)果：全(quan)生育期(qi)(qi)152.9天(tian)(tian)，比(bi)對照常農(nong)(nong)粳8號短1.1天(tian)(tian)。株(zhu)(zhu)高101.7厘米，每畝(mu)有(you)效穗20.3萬(wan)，每穗總粒(li)數133粒(li)，結(jie)實率92.8%，千粒(li)重(zhong)30.1克。經江蘇省農(nong)(nong)業科學院植(zhi)保所鑒定：穗頸瘟(wen)(wen)損失率最(zui)高級3級，稻(dao)瘟(wen)(wen)病綜合抗性指數4.5，中(zhong)感稻(dao)瘟(wen)(wen)病，中(zhong)感白葉(xie)(xie)枯病、條紋(wen)葉(xie)(xie)枯病，抗紋(wen)枯病。米質理化指標(biao)根據(ju)農(nong)(nong)業農(nong)(nong)村部食(shi)品(pin)質量(liang)(liang)監督檢驗測(ce)試中(zhong)心(xin)（武漢(han)）2020年檢測(ce)：整精米率71.4%，堊白粒(li)率13.0%，堊白度3.0%，膠稠度70毫米，直(zhi)鏈(lian)淀粉(fen)含量(liang)(liang)16.5%，長(chang)寬比(bi)1.9，達到農(nong)(nong)業行業《食(shi)用稻(dao)品(pin)種品(pin)質》標(biao)準二級。

      產量(liang)表(biao)現：2019~2020年參加(jia)江蘇省早(zao)(zao)熟(shu)晚粳(jing)稻早(zao)(zao)熟(shu)組區試(shi)，兩(liang)年平均畝(mu)產721.2公(gong)斤，比對(dui)照常(chang)農(nong)粳(jing)8號增(zeng)產6.4%。2021年參加(jia)生產試(shi)驗(yan)，平均畝(mu)產677.4公(gong)斤，比對(dui)照常(chang)農(nong)粳(jing)8號增(zeng)產2.0%。

      栽(zai)培(pei)(pei)技術(shu)要點：1、適(shi)(shi)期(qi)(qi)播(bo)(bo)(bo)種(zhong)(zhong)，培(pei)(pei)育壯秧。適(shi)(shi)宜播(bo)(bo)(bo)種(zhong)(zhong)期(qi)(qi)要根據(ju)(ju)各(ge)地(di)具(ju)體生態條(tiao)件(jian)、參考當(dang)(dang)(dang)地(di)早熟晚粳主栽(zai)品種(zhong)(zhong)播(bo)(bo)(bo)種(zhong)(zhong)期(qi)(qi)合(he)理(li)確(que)定。一(yi)般(ban)5月中(zhong)下旬播(bo)(bo)(bo)種(zhong)(zhong)，濕(shi)潤(run)育秧每(mei)(mei)畝(mu)播(bo)(bo)(bo)量(liang)25~30公(gong)(gong)斤，旱育秧每(mei)(mei)畝(mu)播(bo)(bo)(bo)量(liang)35~40公(gong)(gong)斤，塑(su)盤育秧每(mei)(mei)盤120~130克，大田(tian)用(yong)種(zhong)(zhong)量(liang)每(mei)(mei)畝(mu)3~4公(gong)(gong)斤。2、適(shi)(shi)時(shi)(shi)移栽(zai)，合(he)理(li)密植。秧齡根據(ju)(ju)不同(tong)育秧方式合(he)理(li)確(que)定，適(shi)(shi)時(shi)(shi)移栽(zai)，每(mei)(mei)畝(mu)栽(zai)插(cha)1.8萬~2萬穴，基本苗6萬~8萬。3、科學肥水(shui)運(yun)籌。一(yi)般(ban)畝(mu)施(shi)純氮18~20公(gong)(gong)斤，氮、磷、鉀搭配使用(yong)，比例為2:1:1，肥料運(yun)籌掌握前重、中(zhong)穩、后補的施(shi)肥原則，基蘗肥與(yu)穗肥比例以6:4左右為宜，早施(shi)分蘗肥，拔(ba)節(jie)期(qi)(qi)穩施(shi)氮肥，后期(qi)(qi)重施(shi)保花(hua)肥。水(shui)漿管理(li)上掌握淺水(shui)栽(zai)插(cha)，寸水(shui)活棵，薄水(shui)分蘗，適(shi)(shi)當(dang)(dang)(dang)露(lu)田(tian)；當(dang)(dang)(dang)畝(mu)總莖(jing)蘗數達20萬時(shi)(shi)分次適(shi)(shi)度擱田(tian)，后期(qi)(qi)間(jian)隙(xi)灌溉，干干濕(shi)濕(shi)強稈壯根，收割前一(yi)周(zhou)斷水(shui)。4、綜(zong)(zong)合(he)防治病(bing)(bing)蟲(chong)(chong)草害(hai)。根據(ju)(ju)各(ge)地(di)病(bing)(bing)蟲(chong)(chong)發生的動態，堅持(chi)預防為主，綜(zong)(zong)合(he)防治的方針。播(bo)(bo)(bo)前用(yong)藥(yao)劑(ji)浸種(zhong)(zhong)防治惡苗病(bing)(bing)和干尖線蟲(chong)(chong)病(bing)(bing)等種(zhong)(zhong)傳(chuan)病(bing)(bing)蟲(chong)(chong)害(hai)，秧田(tian)期(qi)(qi)和大田(tian)期(qi)(qi)注意灰(hui)飛(fei)虱(shi)、稻薊馬的防治，中(zhong)、后期(qi)(qi)要綜(zong)(zong)合(he)防治紋枯病(bing)(bing)、螟蟲(chong)(chong)、稻飛(fei)虱(shi)、稻瘟病(bing)(bing)等。

      審定意見：通過(guo)審定，適宜在江蘇省沿江及蘇南地區種(zhong)植。