品種名稱：寧玉688

      申 請 者：江蘇(su)金華隆(long)種子科技有(you)限(xian)公司

      育 種 者：江蘇金華(hua)隆種子科(ke)技有限公司(si)

      品種來源：寧晨22×寧晨277

      特征特性：東華北中晚熟春玉米組出苗至成熟129天，比對(dui)照鄭單958早熟1天左右。幼苗葉(xie)(xie)鞘紫(zi)(zi)色(se)，花(hua)藥紫(zi)(zi)色(se)，穎殼紫(zi)(zi)色(se)。株型(xing)半緊湊，株高(gao)(gao)278厘米，穗(sui)位高(gao)(gao)119厘米，成株葉(xie)(xie)片數20片。果(guo)穗(sui)筒型(xing)，穗(sui)長(chang)20.9厘米，穗(sui)行數16～18行，穗(sui)粗(cu)5.1厘米，穗(sui)軸紅色(se)，籽粒黃色(se)、馬齒，百粒重36.6克。接(jie)種鑒定，高(gao)(gao)抗(kang)大斑病(bing)(bing)，感(gan)絲(si)黑穗(sui)病(bing)(bing)，中抗(kang)灰斑病(bing)(bing)，抗(kang)莖腐病(bing)(bing)，抗(kang)穗(sui)腐病(bing)(bing)。品質分析，籽粒容重771克/升，粗(cu)蛋白(bai)含量(liang)10.18%，粗(cu)脂(zhi)肪含量(liang)4.09%，粗(cu)淀粉(fen)含量(liang)75.06%，賴氨(an)酸含量(liang)0.29%。

      產量表現：2016～2017年(nian)參加東華北中晚熟(shu)春玉米組區域試驗(yan)，兩年(nian)平均(jun)畝產(chan)(chan)809.3千克，比對(dui)照鄭單958增產(chan)(chan)9.5%。2017年(nian)生產(chan)(chan)試驗(yan)，平均(jun)畝產(chan)(chan)793.4千克，比對(dui)照鄭單958增產(chan)(chan)5.9%。

      栽培技術要點：適宜4月中旬(xun)至5月中旬(xun)播種。每畝(mu)適宜密度4500株。在施足農家(jia)肥的基(ji)礎上，畝(mu)施復合肥40～50千克。追肥在玉米大喇叭口期，畝(mu)施尿素30千克。玉米在拔節(jie)前(qian)(生長至5個展開(kai)葉片之前(qian))，及時(shi)防治(zhi)苗期病(bing)蟲害。適時(shi)晚收，可增(zeng)加(jia)粒重，提高產量及品質(zhi)。注意防治(zhi)絲黑穗病(bing)。

      審定意見：該品種符合國家玉(yu)米品種審定標(biao)準，通(tong)過審定。適宜在(zai)東(dong)華北中晚熟春玉(yu)米區(qu)(qu)(qu)的(de)吉林省(sheng)四平市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、松原市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、長(chang)春市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)的(de)大(da)部(bu)分(fen)(fen)(fen)地(di)區(qu)(qu)(qu)，遼(liao)源市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、白城市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、吉林市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)部(bu)分(fen)(fen)(fen)地(di)區(qu)(qu)(qu)、通(tong)化市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)南部(bu)，遼(liao)寧省(sheng)除東(dong)部(bu)山(shan)區(qu)(qu)(qu)和大(da)連(lian)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、東(dong)港(gang)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)以外(wai)的(de)大(da)部(bu)分(fen)(fen)(fen)地(di)區(qu)(qu)(qu)，內蒙古(gu)赤峰市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)和通(tong)遼(liao)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)大(da)部(bu)分(fen)(fen)(fen)地(di)區(qu)(qu)(qu)，山(shan)西(xi)省(sheng)忻州市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、晉中市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、太原市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、陽(yang)泉市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、長(chang)治市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、晉城市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、呂梁市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)平川區(qu)(qu)(qu)和南部(bu)山(shan)區(qu)(qu)(qu)，河北省(sheng)張家口市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、承德(de)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、秦(qin)皇(huang)島市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、唐山(shan)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、廊坊市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、保定市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)北部(bu)、滄州市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)北部(bu)春播(bo)區(qu)(qu)(qu)，北京(jing)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)春播(bo)區(qu)(qu)(qu)，天(tian)津(jin)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)春播(bo)區(qu)(qu)(qu)種植。