品種名稱：京科968

      申 請 者：北(bei)京市農林科學院玉米研究中心

      育 種 者：北(bei)京市農林(lin)科學(xue)院玉米研究(jiu)中(zhong)心

      品種來源：京724×京92

      特征特性：黃淮海夏玉米組出苗至成熟103天，和對照鄭單相當。幼苗(miao)(miao)葉(xie)(xie)鞘(qiao)(qiao)紫色(se)(se)，花藥紫色(se)(se)，株(zhu)(zhu)型(xing)半(ban)緊(jin)湊(cou)，株(zhu)(zhu)高(gao)282厘(li)米，穗(sui)位高(gao)104厘(li)米，成株(zhu)(zhu)葉(xie)(xie)片數19片。果穗(sui)筒(tong)型(xing)，穗(sui)長17.85厘(li)米，穗(sui)行數14-18行，穗(sui)軸白(bai)色(se)(se)，籽(zi)粒(li)黃色(se)(se)、半(ban)馬齒，百粒(li)重(zhong)36.35克。接(jie)種(zhong)(zhong)鑒(jian)定(ding)，中(zhong)抗(kang)(kang)小斑(ban)(ban)病(bing)(bing)(bing)(bing)，感(gan)莖腐(fu)(fu)病(bing)(bing)(bing)(bing)和瘤(liu)黑(hei)粉(fen)病(bing)(bing)(bing)(bing)，高(gao)感(gan)穗(sui)腐(fu)(fu)病(bing)(bing)(bing)(bing)、彎(wan)孢(bao)葉(xie)(xie)斑(ban)(ban)病(bing)(bing)(bing)(bing)、粗縮(suo)病(bing)(bing)(bing)(bing)和南(nan)方(fang)銹病(bing)(bing)(bing)(bing)。籽(zi)粒(li)容重(zhong)732克/升，粗蛋白(bai)含量(liang)(liang)(liang)10.02%，粗脂肪含量(liang)(liang)(liang)3.77%，粗淀(dian)(dian)粉(fen)含量(liang)(liang)(liang)74.00%，賴氨酸含量(liang)(liang)(liang)0.32%。黃淮海夏播(bo)青貯玉(yu)米組出苗(miao)(miao)至收獲期98.5天，比對照雅玉(yu)青貯8號早(zao)熟1.5天。幼苗(miao)(miao)葉(xie)(xie)鞘(qiao)(qiao)淺紫色(se)(se)，株(zhu)(zhu)型(xing)半(ban)緊(jin)湊(cou)，株(zhu)(zhu)高(gao)281厘(li)米，穗(sui)位高(gao)106厘(li)米。2016年(nian)接(jie)種(zhong)(zhong)鑒(jian)定(ding)，中(zhong)抗(kang)(kang)莖腐(fu)(fu)病(bing)(bing)(bing)(bing)，中(zhong)抗(kang)(kang)小斑(ban)(ban)病(bing)(bing)(bing)(bing)，中(zhong)抗(kang)(kang)彎(wan)孢(bao)葉(xie)(xie)斑(ban)(ban)病(bing)(bing)(bing)(bing)；2017年(nian)接(jie)種(zhong)(zhong)鑒(jian)定(ding)，感(gan)莖腐(fu)(fu)病(bing)(bing)(bing)(bing)，中(zhong)抗(kang)(kang)小斑(ban)(ban)病(bing)(bing)(bing)(bing)，感(gan)彎(wan)孢(bao)葉(xie)(xie)斑(ban)(ban)病(bing)(bing)(bing)(bing)，感(gan)瘤(liu)黑(hei)粉(fen)病(bing)(bing)(bing)(bing)，感(gan)南(nan)方(fang)銹病(bing)(bing)(bing)(bing)。全株(zhu)(zhu)粗蛋白(bai)含量(liang)(liang)(liang)8.32%~8.69%，淀(dian)(dian)粉(fen)含量(liang)(liang)(liang)35.07%~39.26%，中(zhong)性(xing)洗滌纖(xian)維含量(liang)(liang)(liang)33.70%~36.84%，酸性(xing)洗滌纖(xian)維含量(liang)(liang)(liang)13.25%~15.61%

      產量表現： 2016-2017年參加黃淮海夏玉米組區域試驗，兩年平均畝產646.05千(qian)克(ke)(ke)，比(bi)對(dui)(dui)照(zhao)鄭單958增(zeng)產(chan)(chan)4.46%。2017年(nian)(nian)生產(chan)(chan)試驗，平(ping)均畝產(chan)(chan)621.6千(qian)克(ke)(ke)，比(bi)對(dui)(dui)照(zhao)鄭單958增(zeng)產(chan)(chan)3.6%。2016-2017年(nian)(nian)參加黃淮海(hai)夏播青貯(zhu)(zhu)玉(yu)米組區域試驗，兩年(nian)(nian)平(ping)均畝產(chan)(chan)（干重(zhong)）1217.5千(qian)克(ke)(ke)，比(bi)對(dui)(dui)照(zhao)雅(ya)玉(yu)青貯(zhu)(zhu)8號增(zeng)產(chan)(chan)3.04%。2017年(nian)(nian)生產(chan)(chan)試驗，平(ping)均畝產(chan)(chan)（干重(zhong)）1076.7千(qian)克(ke)(ke)，比(bi)對(dui)(dui)照(zhao)雅(ya)玉(yu)青貯(zhu)(zhu)8號增(zeng)產(chan)(chan)11.1%。

      栽培技術要點：黃淮海夏玉米組：播種期6月中(zhong)旬，根(gen)據地(di)力(li)條件，畝(mu)種(zhong)植(zhi)(zhi)密度(du)4000-4500株。注(zhu)意(yi)防治穗腐病(bing)(bing)(bing)、彎(wan)孢(bao)葉斑病(bing)(bing)(bing)、粗(cu)縮病(bing)(bing)(bing)和南方銹病(bing)(bing)(bing)。黃淮海夏(xia)播(bo)青貯(zhu)玉米(mi)區：播(bo)種(zhong)期6月中(zhong)旬，根(gen)據地(di)力(li)條件，畝(mu)種(zhong)植(zhi)(zhi)密度(du)4000-4500株。 黃淮海夏(xia)玉米(mi)區：播(bo)種(zhong)期6月中(zhong)旬，根(gen)據地(di)力(li)條件，畝(mu)種(zhong)植(zhi)(zhi)密度(du)4000-4500株。注(zhu)意(yi)預防穗腐病(bing)(bing)(bing)和彎(wan)孢(bao)葉斑病(bing)(bing)(bing)。

      審定意見：該(gai)品種符合國家玉米品種審定(ding)標準，通過(guo)審定(ding)。適(shi)宜(yi)在河(he)(he)南(nan)(nan)(nan)省(sheng)(sheng)(sheng)、山(shan)東(dong)(dong)省(sheng)(sheng)(sheng)、河(he)(he)北(bei)省(sheng)(sheng)(sheng)保定(ding)市(shi)(shi)和(he)(he)(he)滄州市(shi)(shi)的南(nan)(nan)(nan)部及(ji)以(yi)南(nan)(nan)(nan)地(di)(di)(di)區(qu)(qu)(qu)(qu)(qu)(qu)、陜西省(sheng)(sheng)(sheng)關中(zhong)(zhong)灌區(qu)(qu)(qu)(qu)(qu)(qu)、山(shan)西省(sheng)(sheng)(sheng)運(yun)城市(shi)(shi)和(he)(he)(he)臨(lin)汾市(shi)(shi)、晉城市(shi)(shi)部分平川地(di)(di)(di)區(qu)(qu)(qu)(qu)(qu)(qu)、江(jiang)蘇和(he)(he)(he)安(an)徽(hui)兩(liang)省(sheng)(sheng)(sheng)淮河(he)(he)以(yi)北(bei)地(di)(di)(di)區(qu)(qu)(qu)(qu)(qu)(qu)、湖北(bei)省(sheng)(sheng)(sheng)襄陽地(di)(di)(di)區(qu)(qu)(qu)(qu)(qu)(qu)夏(xia)播種植(zhi)。適(shi)宜(yi)在河(he)(he)南(nan)(nan)(nan)省(sheng)(sheng)(sheng)、山(shan)東(dong)(dong)省(sheng)(sheng)(sheng)、河(he)(he)北(bei)省(sheng)(sheng)(sheng)保定(ding)市(shi)(shi)和(he)(he)(he)滄州市(shi)(shi)的南(nan)(nan)(nan)部及(ji)以(yi)南(nan)(nan)(nan)地(di)(di)(di)區(qu)(qu)(qu)(qu)(qu)(qu)、陜西省(sheng)(sheng)(sheng)關中(zhong)(zhong)灌區(qu)(qu)(qu)(qu)(qu)(qu)、山(shan)西省(sheng)(sheng)(sheng)運(yun)城市(shi)(shi)和(he)(he)(he)臨(lin)汾市(shi)(shi)、晉城市(shi)(shi)部分平川地(di)(di)(di)區(qu)(qu)(qu)(qu)(qu)(qu)、江(jiang)蘇和(he)(he)(he)安(an)徽(hui)兩(liang)省(sheng)(sheng)(sheng)淮河(he)(he)以(yi)北(bei)地(di)(di)(di)區(qu)(qu)(qu)(qu)(qu)(qu)、湖北(bei)省(sheng)(sheng)(sheng)襄陽等黃淮海夏(xia)播地(di)(di)(di)區(qu)(qu)(qu)(qu)(qu)(qu)作為(wei)青(qing)貯(zhu)玉米種植(zhi)。