品種名稱：墾沃9905

      申請者：北大荒墾豐種業股份有限公司

      育種者：北大荒(huang)墾(ken)豐種業股份(fen)有限公司、墾(ken)豐科沃施種業有限公司

      品種來源：KW4XL1606×KW7XL1704

      特征特性：東華北(bei)中晚熟(shu)春玉米組出(chu)苗至成熟(shu)128.8天，比(bi)對照早熟(shu)0.9天。幼(you)苗葉(xie)鞘(qiao)淺紫(zi)色(se)(se)，花絲綠色(se)(se)，花藥(yao)黃色(se)(se)，穎殼綠色(se)(se)。株型半緊湊(cou)，株高295厘(li)米，穗位高103厘(li)米，成株葉(xie)片(pian)數19片(pian)。果穗長(chang)(chang)筒型，穗長(chang)(chang)20.7厘(li)米，穗行數14—16行，穗軸紅(hong)色(se)(se)，籽(zi)粒(li)黃色(se)(se)，百粒(li)重35.5克。經鑒定，感(gan)大斑病(bing)(bing)，中抗莖腐病(bing)(bing)，感(gan)穗腐病(bing)(bing)，感(gan)灰斑病(bing)(bing)，感(gan)絲黑穗病(bing)(bing)，經測定，籽(zi)粒(li)容重766克/升，粗淀粉含量(liang)75.85%，粗蛋白含量(liang)8.29%，粗脂肪含量(liang)4.79%，賴(lai)氨酸含量(liang)0.26%。

      產量表現：參加國家(jia)玉(yu)(yu)米(mi)品種綠色(se)通(tong)道試(shi)驗(yan)(yan)東華北中(zhong)晚熟(shu)春玉(yu)(yu)米(mi)組(zu)。2021年區域(yu)試(shi)驗(yan)(yan)初(chu)試(shi)平均畝產(chan)(chan)(chan)858千(qian)(qian)克，比(bi)(bi)對照增(zeng)(zeng)(zeng)產(chan)(chan)(chan)4.37%；2022年區域(yu)試(shi)驗(yan)(yan)復試(shi)平均畝產(chan)(chan)(chan)853千(qian)(qian)克，比(bi)(bi)對照增(zeng)(zeng)(zeng)產(chan)(chan)(chan)5.87%；兩年區域(yu)試(shi)驗(yan)(yan)平均畝產(chan)(chan)(chan)856千(qian)(qian)克，比(bi)(bi)對照增(zeng)(zeng)(zeng)產(chan)(chan)(chan)5.1%；2022年生產(chan)(chan)(chan)試(shi)驗(yan)(yan)，平均畝產(chan)(chan)(chan)834千(qian)(qian)克，比(bi)(bi)對照增(zeng)(zeng)(zeng)產(chan)(chan)(chan)4.11%。

      栽培技術要點：適宜播種期4月(yue)下旬(xun)至5月(yue)上旬(xun)，密度4500株/畝左(zuo)右，注意防治灰(hui)斑病、大斑病和穗腐病。

      審定意見：該(gai)品種符(fu)合國家玉米品種審定(ding)標(biao)準，通過(guo)審定(ding)。適宜在吉林省四(si)平市(shi)(shi)(shi)(shi)(shi)(shi)、松(song)原(yuan)市(shi)(shi)(shi)(shi)(shi)(shi)、長(chang)春(chun)市(shi)(shi)(shi)(shi)(shi)(shi)的(de)大部(bu)分地(di)區(qu)和遼源市(shi)(shi)(shi)(shi)(shi)(shi)、白城市(shi)(shi)(shi)(shi)(shi)(shi)、吉林市(shi)(shi)(shi)(shi)(shi)(shi)部(bu)分地(di)區(qu)、通化市(shi)(shi)(shi)(shi)(shi)(shi)南(nan)部(bu)，遼寧省除東部(bu)山(shan)(shan)區(qu)和大連市(shi)(shi)(shi)(shi)(shi)(shi)、東港市(shi)(shi)(shi)(shi)(shi)(shi)以外(wai)的(de)大部(bu)分地(di)區(qu)，內蒙古自治區(qu)赤峰市(shi)(shi)(shi)(shi)(shi)(shi)和通遼市(shi)(shi)(shi)(shi)(shi)(shi)大部(bu)分地(di)區(qu)，山(shan)(shan)西省忻(xin)州市(shi)(shi)(shi)(shi)(shi)(shi)、晉(jin)中市(shi)(shi)(shi)(shi)(shi)(shi)、太(tai)原(yuan)市(shi)(shi)(shi)(shi)(shi)(shi)、陽泉市(shi)(shi)(shi)(shi)(shi)(shi)、長(chang)治市(shi)(shi)(shi)(shi)(shi)(shi)、晉(jin)城市(shi)(shi)(shi)(shi)(shi)(shi)、呂梁市(shi)(shi)(shi)(shi)(shi)(shi)平川區(qu)和南(nan)部(bu)山(shan)(shan)區(qu)，河北(bei)省張家口市(shi)(shi)(shi)(shi)(shi)(shi)、承德市(shi)(shi)(shi)(shi)(shi)(shi)、秦皇島(dao)市(shi)(shi)(shi)(shi)(shi)(shi)、唐山(shan)(shan)市(shi)(shi)(shi)(shi)(shi)(shi)、廊坊市(shi)(shi)(shi)(shi)(shi)(shi)、保(bao)定(ding)市(shi)(shi)(shi)(shi)(shi)(shi)北(bei)部(bu)、滄州市(shi)(shi)(shi)(shi)(shi)(shi)北(bei)部(bu)春(chun)播(bo)區(qu)，北(bei)京市(shi)(shi)(shi)(shi)(shi)(shi)春(chun)播(bo)區(qu)，天津(jin)市(shi)(shi)(shi)(shi)(shi)(shi)春(chun)播(bo)區(qu)種植。