品種(zhong)名稱：中禾優7號(hao)

      申 請(qing) 者：江蘇蘇樂種業科技有限公司

      育 種 者(zhe)：浙興市農業科(ke)學(xue)研(yan)究院、中(zhong)國(guo)科(ke)學(xue)院遺傳與(yu)發(fa)育生物學(xue)研(yan)究所、江(jiang)蘇蘇樂種業科(ke)技有限(xian)公司

      品(pin)種來源：嘉禾112A×NP177

      特(te)征特(te)性(xing)：三(san)系雜交中(zhong)(zhong)粳(jing)稻(dao)品種。葉片中(zhong)(zhong)綠(lv)，葉姿較挺，分蘗力(li)較強，株(zhu)型半緊湊，抗倒性(xing)中(zhong)(zhong)等。省(sheng)區(qu)試平均(jun)結果：全生(sheng)育期148.5天，比(bi)對照(zhao)甬優2640長6.0天。株(zhu)高(gao)124.5厘(li)米(mi)(mi)，每(mei)畝有效穗16.6萬，每(mei)穗總粒數241.6粒，結實率78.7%，千(qian)粒重26.7克。經江(jiang)蘇省(sheng)農(nong)業(ye)科學院(yuan)植保所鑒定：穗頸瘟損失率5級(ji)，稻(dao)瘟病(bing)(bing)綜合抗性(xing)指(zhi)數4.25，中(zhong)(zhong)感稻(dao)瘟病(bing)(bing)、白(bai)葉枯病(bing)(bing)、條紋(wen)葉枯病(bing)(bing)，抗紋(wen)枯病(bing)(bing)。米(mi)(mi)質(zhi)理化(hua)指(zhi)標(biao)根據農(nong)業(ye)農(nong)村部(bu)食(shi)品質(zhi)量(liang)(liang)監督檢驗測試中(zhong)(zhong)心(xin)（武漢）2018年檢測：整精米(mi)(mi)率66.9%，堊(e)白(bai)粒率14.0%，堊(e)白(bai)度2.7%，膠稠度70毫米(mi)(mi)，直(zhi)鏈淀粉含(han)量(liang)(liang)13.0%，長寬比(bi)2.8，達到農(nong)業(ye)行(xing)業(ye)《食(shi)用稻(dao)品種品質(zhi)》標(biao)準二級(ji)。

      產(chan)量表現：2018~2019年參(can)加江蘇省雜交(jiao)中粳(jing)稻區試，兩年平(ping)均(jun)畝(mu)產(chan)724.8公(gong)斤，比(bi)對照(zhao)(zhao)甬(yong)優(you)(you)2640增產(chan)0.5%。2020年參(can)加生產(chan)試驗(yan)，平(ping)均(jun)畝(mu)產(chan)718.7公(gong)斤，比(bi)對照(zhao)(zhao)甬(yong)優(you)(you)2640增產(chan)2.4%。

      栽(zai)培(pei)技術要(yao)(yao)(yao)點：1、適期(qi)稀播，培(pei)育(yu)壯秧(yang)。一般5月上中(zhong)旬播種(zhong)，濕潤育(yu)秧(yang)每(mei)畝(mu)(mu)(mu)秧(yang)田(tian)(tian)(tian)播種(zhong)量(liang)10公斤(jin)(jin)左(zuo)(zuo)右(you)，旱(han)育(yu)秧(yang)每(mei)畝(mu)(mu)(mu)凈秧(yang)板播量(liang)20公斤(jin)(jin)左(zuo)(zuo)右(you)，手插(cha)秧(yang)大田(tian)(tian)(tian)需種(zhong)量(liang)每(mei)畝(mu)(mu)(mu)0.6~0.8公斤(jin)(jin)，機插(cha)秧(yang)大田(tian)(tian)(tian)需種(zhong)量(liang)每(mei)畝(mu)(mu)(mu)1~1.5公斤(jin)(jin)左(zuo)(zuo)右(you)。藥劑浸種(zhong)催芽(ya)，種(zhong)子露白后(hou)(hou)(hou)及(ji)時(shi)(shi)播種(zhong)。秧(yang)盤育(yu)秧(yang)每(mei)盤播80克左(zuo)(zuo)右(you)干種(zhong)子，畝(mu)(mu)(mu)大田(tian)(tian)(tian)用(yong)(yong)(yong)秧(yang)苗(miao)(miao)(miao)15~18盤。前(qian)期(qi)保持(chi)秧(yang)板濕潤，秧(yang)苗(miao)(miao)(miao)二葉(xie)(xie)期(qi)后(hou)(hou)(hou)要(yao)(yao)(yao)適時(shi)(shi)灌(guan)淺(qian)水(shui)(shui)，以(yi)(yi)利(li)于秧(yang)苗(miao)(miao)(miao)分蘗(bo)(bo)(bo)。2、適時(shi)(shi)移栽(zai)，合(he)理密植(zhi)。一般6月上中(zhong)旬移栽(zai)，手插(cha)秧(yang)秧(yang)齡控(kong)(kong)(kong)制在(zai)(zai)30天(tian)(tian)(tian)左(zuo)(zuo)右(you)，機插(cha)秧(yang)秧(yang)齡控(kong)(kong)(kong)制在(zai)(zai)18天(tian)(tian)(tian)以(yi)(yi)內，機插(cha)時(shi)(shi)苗(miao)(miao)(miao)齡控(kong)(kong)(kong)制3.1葉(xie)(xie)前(qian)。行(xing)株距30厘(li)米(mi)×13.3厘(li)米(mi)，穴插(cha)1~2苗(miao)(miao)(miao)。3、測土(tu)配(pei)方(fang)，合(he)理施(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)。注(zhu)意(yi)氮(dan)、磷、鉀(jia)、有機肥(fei)(fei)(fei)(fei)、微量(liang)元(yuan)素肥(fei)(fei)(fei)(fei)配(pei)合(he)施(shi)(shi)(shi)用(yong)(yong)(yong)。本田(tian)(tian)(tian)總施(shi)(shi)(shi)純氮(dan)量(liang)每(mei)畝(mu)(mu)(mu)折算14~16公斤(jin)(jin)，氮(dan):磷:鉀(jia)=3:1:3，基肥(fei)(fei)(fei)(fei)、蘗(bo)(bo)(bo)肥(fei)(fei)(fei)(fei)、穗(sui)肥(fei)(fei)(fei)(fei)比例氮(dan)肥(fei)(fei)(fei)(fei)為4:4:2，鉀(jia)肥(fei)(fei)(fei)(fei)為2:4:4，磷肥(fei)(fei)(fei)(fei)作(zuo)基肥(fei)(fei)(fei)(fei)一次性施(shi)(shi)(shi)入。為了防止(zhi)貪青晚熟，提高水(shui)(shui)稻品質(zhi)，穗(sui)肥(fei)(fei)(fei)(fei)應(ying)控(kong)(kong)(kong)制氮(dan)肥(fei)(fei)(fei)(fei)使用(yong)(yong)(yong)量(liang)，主要(yao)(yao)(yao)施(shi)(shi)(shi)用(yong)(yong)(yong)復合(he)肥(fei)(fei)(fei)(fei)。4、科(ke)學(xue)管水(shui)(shui)，活(huo)熟到老。插(cha)后(hou)(hou)(hou)灌(guan)水(shui)(shui)護苗(miao)(miao)(miao)，返青后(hou)(hou)(hou)淺(qian)水(shui)(shui)灌(guan)溉促分蘗(bo)(bo)(bo)，并經常露田(tian)(tian)(tian)通(tong)氣。當每(mei)叢稻有8~10個(ge)分蘗(bo)(bo)(bo)時(shi)(shi)，畝(mu)(mu)(mu)總莖蘗(bo)(bo)(bo)數達(da)17萬(wan)左(zuo)(zuo)右(you)時(shi)(shi)開始多次擱(ge)田(tian)(tian)(tian)，擱(ge)田(tian)(tian)(tian)15天(tian)(tian)(tian)左(zuo)(zuo)右(you)灌(guan)水(shui)(shui)4~5天(tian)(tian)(tian)后(hou)(hou)(hou)再繼續擱(ge)田(tian)(tian)(tian)，高峰苗(miao)(miao)(miao)控(kong)(kong)(kong)制在(zai)(zai)25萬(wan)左(zuo)(zuo)右(you)，擱(ge)田(tian)(tian)(tian)以(yi)(yi)田(tian)(tian)(tian)不(bu)陷腳、表土(tu)微裂、葉(xie)(xie)挺而不(bu)卷、葉(xie)(xie)色轉黃為度。以(yi)(yi)后(hou)(hou)(hou)干干濕濕，既不(bu)能(neng)長期(qi)淹(yan)水(shui)(shui)，也(ye)不(bu)要(yao)(yao)(yao)長期(qi)燥田(tian)(tian)(tian)。開始抽穗(sui)時(shi)(shi)田(tian)(tian)(tian)間保持(chi)一定水(shui)(shui)層(ceng)，在(zai)(zai)整(zheng)個(ge)灌(guan)漿(jiang)期(qi)保持(chi)干濕交(jiao)替，以(yi)(yi)防影響根(gen)系活(huo)力，后(hou)(hou)(hou)期(qi)防止(zhi)斷水(shui)(shui)過早(zao)。5、加(jia)強(qiang)病(bing)(bing)蟲(chong)草害防治(zhi)。播種(zhong)前(qian)藥劑浸種(zhong)防治(zhi)惡(e)苗(miao)(miao)(miao)病(bing)(bing)和干尖線蟲(chong)病(bing)(bing)。在(zai)(zai)苗(miao)(miao)(miao)期(qi)和分蘗(bo)(bo)(bo)期(qi)要(yao)(yao)(yao)隨(sui)時(shi)(shi)注(zhu)意(yi)防治(zhi)薊馬(ma)、飛虱等蟲(chong)害，對口、適時(shi)(shi)適量(liang)施(shi)(shi)(shi)用(yong)(yong)(yong)除草劑。后(hou)(hou)(hou)期(qi)要(yao)(yao)(yao)抓好稻曲病(bing)(bing)的防治(zhi)，在(zai)(zai)穗(sui)破口前(qian)5~7天(tian)(tian)(tian)，及(ji)齊穗(sui)后(hou)(hou)(hou)各(ge)防1次。

      審定意見：通過審定，適宜(yi)在江蘇(su)省長江以北地區(qu)種植。