品(pin)種名稱：南粳46

  ;    申(shen) 請 者：江(jiang)蘇省農(nong)業(ye)科學院糧食作物研究所

      育 種 者：江蘇省農業科學(xue)院糧食作物(wu)研究(jiu)所

      品種來(lai)源：武香粳14 /關東(dong)194

      特征特性(xing)：晚粳稻(dao)品種。株型緊湊，長勢(shi)較(jiao)旺，成穗率高(gao)，群體整齊度好，抗(kang)(kang)(kang)倒性(xing)較(jiao)強，穗型較(jiao)大，葉色(se)中綠，葉姿(zi)較(jiao)挺，后期熟相好。擴(kuo)區(qu)自主試驗結(jie)果：全生育期164.5天，比(bi)對照武運粳23長4.3天。株高(gao)110.1厘米，每畝(mu)有效(xiao)穗21.8萬，每穗總粒(li)(li)數133.3粒(li)(li)，結(jie)實率94.0%，千粒(li)(li)重26.1克。經江(jiang)蘇(su)省農業科學院(yuan)植保所(suo)鑒定：稻(dao)瘟(wen)(wen)病(bing)(bing)(bing)(bing)損(sun)失(shi)率5級，稻(dao)瘟(wen)(wen)病(bing)(bing)(bing)(bing)綜(zong)合抗(kang)(kang)(kang)性(xing)指數5.0，中感稻(dao)瘟(wen)(wen)病(bing)(bing)(bing)(bing)、白葉枯病(bing)(bing)(bing)(bing)，中抗(kang)(kang)(kang)條紋葉枯病(bing)(bing)(bing)(bing)，感紋枯病(bing)(bing)(bing)(bing)。

      產量表(biao)現：2020年(nian)在江(jiang)蘇沿(yan)江(jiang)及蘇南地區組織擴(kuo)區自主試驗，平均畝產690.9公斤(jin)，比(bi)對照武運粳23增產3.4%。

      栽(zai)培(pei)技術要點：1、適(shi)期(qi)(qi)播種(zhong)(zhong)，培(pei)育壯秧(yang)。在(zai)南京(jing)、鎮江(jiang)、無(wu)錫、常州(zhou)等早熟晚粳區域種(zhong)(zhong)植，根據茬口銜(xian)接安排盡量(liang)提早播種(zhong)(zhong)，一(yi)般(ban)4月(yue)下(xia)旬(xun)至5月(yue)上中(zhong)(zhong)旬(xun)播種(zhong)(zhong)，濕(shi)潤育秧(yang)每畝(mu)播種(zhong)(zhong)量(liang)25~30公(gong)斤，旱(han)育秧(yang)每畝(mu)播種(zhong)(zhong)量(liang)35~40公(gong)斤，塑盤(pan)育秧(yang)每盤(pan)120克左右(you)，大田(tian)(tian)用種(zhong)(zhong)量(liang)每畝(mu)3~4公(gong)斤。2、適(shi)時移(yi)栽(zai)，合理(li)密植。一(yi)般(ban)5月(yue)中(zhong)(zhong)下(xia)旬(xun)至6月(yue)上中(zhong)(zhong)旬(xun)移(yi)栽(zai)，中(zhong)(zhong)大苗秧(yang)齡(ling)(ling)控制在(zai)30~35天，機插秧(yang)秧(yang)齡(ling)(ling)18~20天，秧(yang)齡(ling)(ling)過長需采(cai)取(qu)化(hua)控措施(shi)，中(zhong)(zhong)上等肥(fei)(fei)(fei)力田(tian)(tian)塊每畝(mu)栽(zai)1.7萬(wan)(wan)(wan)穴左右(you)，基本苗5萬(wan)(wan)(wan)~7萬(wan)(wan)(wan)；肥(fei)(fei)(fei)力較差的田(tian)(tian)塊每畝(mu)栽(zai)1.8萬(wan)(wan)(wan)~2.0萬(wan)(wan)(wan)穴，基本苗6萬(wan)(wan)(wan)~8萬(wan)(wan)(wan)。3、科(ke)學肥(fei)(fei)(fei)水(shui)管理(li)。一(yi)般(ban)畝(mu)施(shi)純(chun)氮(dan)(dan)18公(gong)斤左右(you)，氮(dan)(dan)、磷、鉀搭配(pei)使(shi)用，比例(li)為(wei)2:1:1，肥(fei)(fei)(fei)料運(yun)籌掌握“前(qian)重、中(zhong)(zhong)穩(wen)、后(hou)(hou)(hou)補”的施(shi)肥(fei)(fei)(fei)原則(ze)，基蘗(bo)(bo)肥(fei)(fei)(fei)與穗肥(fei)(fei)(fei)比例(li)以6:4或(huo)7:3左右(you)為(wei)宜，早施(shi)分(fen)(fen)蘗(bo)(bo)肥(fei)(fei)(fei)，拔節期(qi)(qi)穩(wen)施(shi)氮(dan)(dan)肥(fei)(fei)(fei)，后(hou)(hou)(hou)期(qi)(qi)重施(shi)保花肥(fei)(fei)(fei)。水(shui)漿管理(li)上掌握淺水(shui)栽(zai)插，寸水(shui)活棵，薄水(shui)分(fen)(fen)蘗(bo)(bo)，適(shi)當露(lu)田(tian)(tian)；當畝(mu)總(zong)莖蘗(bo)(bo)數達18萬(wan)(wan)(wan)時分(fen)(fen)次適(shi)度擱田(tian)(tian)，后(hou)(hou)(hou)期(qi)(qi)間隙(xi)灌(guan)溉，干干濕(shi)濕(shi)強稈(gan)壯根，收割(ge)前(qian)一(yi)周斷水(shui)。4、綜(zong)合防(fang)(fang)治(zhi)病(bing)蟲(chong)害(hai)。播前(qian)用藥(yao)劑浸(jin)種(zhong)(zhong)防(fang)(fang)治(zhi)惡苗病(bing)和(he)干尖(jian)線蟲(chong)病(bing)等種(zhong)(zhong)傳病(bing)蟲(chong)害(hai)，秧(yang)田(tian)(tian)期(qi)(qi)和(he)大田(tian)(tian)期(qi)(qi)注意灰飛虱、稻薊馬的防(fang)(fang)治(zhi)，中(zhong)(zhong)、后(hou)(hou)(hou)期(qi)(qi)要綜(zong)合防(fang)(fang)治(zhi)紋枯(ku)病(bing)、螟蟲(chong)、稻飛虱、稻瘟病(bing)等。

      審(shen)定意見：通過擴區(qu)審(shen)定，適宜在(zai)江蘇(su)省沿江及蘇(su)南地區(qu)種植。