品種名稱：JN7223

      申請者：中林集團張掖金象種業有限公司(si)

      育種者：中林集團張掖金象種業有限公司

      品種來源：T9711×T9023

      特征特性：東(dong)華北中(zhong)晚熟(shu)(shu)春玉米(mi)(mi)組出苗至成(cheng)熟(shu)(shu)127.3天，比對(dui)照鄭單(dan)958早(zao)熟(shu)(shu)0.1天。幼苗葉(xie)鞘(qiao)紫色(se)，花(hua)絲(si)淺紫色(se)，花(hua)藥黃色(se)，穎殼綠色(se)。株(zhu)(zhu)型半(ban)(ban)緊湊，株(zhu)(zhu)高(gao)302厘(li)米(mi)(mi)，穗(sui)(sui)位高(gao)128厘(li)米(mi)(mi)，成(cheng)株(zhu)(zhu)葉(xie)片(pian)數20片(pian)。果(guo)穗(sui)(sui)長(chang)筒型，穗(sui)(sui)長(chang)21.5厘(li)米(mi)(mi)，穗(sui)(sui)行(xing)(xing)數14—16行(xing)(xing)，穗(sui)(sui)軸紅色(se)，籽粒(li)黃色(se)，籽粒(li)類型半(ban)(ban)馬齒，百粒(li)重38.1克。經鑒定(ding)，抗(kang)(kang)莖腐病，中(zhong)抗(kang)(kang)大斑病，中(zhong)抗(kang)(kang)穗(sui)(sui)腐病，感灰斑病，感絲(si)黑(hei)穗(sui)(sui)病。經測定(ding)，籽粒(li)容重783克/升，粗(cu)淀粉含量(liang)73.94%，粗(cu)蛋白含量(liang)9.19%，粗(cu)脂肪含量(liang)4.30%，賴(lai)氨酸含量(liang)0.26%。

      產量表現：參加國(guo)家(jia)玉(yu)米品種聯合體試(shi)(shi)驗(yan)(yan)(yan)東(dong)華(hua)北(bei)中晚熟春玉(yu)米組(zu)。2022年區域試(shi)(shi)驗(yan)(yan)(yan)初試(shi)(shi)平(ping)均(jun)畝(mu)產(chan)(chan)855千(qian)克(ke)(ke)，比(bi)對(dui)(dui)照(zhao)(zhao)增產(chan)(chan)5.9%；2023年區域試(shi)(shi)驗(yan)(yan)(yan)復試(shi)(shi)平(ping)均(jun)畝(mu)產(chan)(chan)874千(qian)克(ke)(ke)，比(bi)對(dui)(dui)照(zhao)(zhao)增產(chan)(chan)3.8%；兩年區域試(shi)(shi)驗(yan)(yan)(yan)平(ping)均(jun)畝(mu)產(chan)(chan)864千(qian)克(ke)(ke)，比(bi)對(dui)(dui)照(zhao)(zhao)增產(chan)(chan)4.8%；2023年生產(chan)(chan)試(shi)(shi)驗(yan)(yan)(yan)，平(ping)均(jun)畝(mu)產(chan)(chan)842千(qian)克(ke)(ke)，比(bi)對(dui)(dui)照(zhao)(zhao)增產(chan)(chan)9.3%。

      栽培技術要點：適宜播(bo)種期(qi)4月下旬(xun)至5月上旬(xun)，密度4500株/畝左右，注意防治絲黑穗病(bing)、灰斑(ban)病(bing)。

      審定意見：該品種(zhong)符合(he)國家(jia)玉米品種(zhong)審定(ding)標準(zhun)，通過審定(ding)。適宜在吉林省(sheng)(sheng)四平市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、松原市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、長春市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)的(de)大(da)(da)部分地區(qu)(qu)，遼源市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、白城市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、吉林市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)部分地區(qu)(qu)、通化(hua)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)南部；遼寧省(sheng)(sheng)除東部山區(qu)(qu)和大(da)(da)連市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、東港市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)以外(wai)的(de)大(da)(da)部分地區(qu)(qu)；內蒙古自治區(qu)(qu)赤峰(feng)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)和通遼市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)大(da)(da)部分地區(qu)(qu)；山西省(sheng)(sheng)忻州市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、晉中市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、太(tai)原市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、陽泉(quan)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、長治市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、晉城市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、呂梁市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)平川(chuan)區(qu)(qu)和南部山區(qu)(qu)；河北省(sheng)(sheng)張家(jia)口市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、承德市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、秦(qin)皇島市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、唐山市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、廊坊市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)、保定(ding)市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)北部、滄州市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)北部春播(bo)區(qu)(qu)；北京市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)春播(bo)區(qu)(qu)；天(tian)津市(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)春播(bo)區(qu)(qu)種(zhong)植。