協科507
作物種類：玉米
種子類別：雜交種
審(shen)定(ding)編號：國審(shen)玉(yu)20216053
品種權號：
特征特性：
東華北中早熟春玉米組出苗至成熟125.4天，比對照吉單27晚熟0.3天。幼苗葉鞘淺紫色，葉片綠色，葉緣綠色，花藥淺紫色，花絲綠色，穎殼綠色。株型半緊湊，株高309厘米，穗位高120厘米，成株葉片數19片左右。果穗筒形，穗長19.2厘米，穗行數14－16行，穗粗5.0厘米，穗軸紅色，籽粒黃色、半馬齒，百粒重37.9克。接種鑒定，中抗穗腐病，感大斑病、絲黑穗病、灰斑病和莖腐病。籽粒容重730克/升，粗蛋白含量10.57%，粗脂肪含量3.88%，粗淀粉含量72.74%，賴氨酸含量0.29%。
產量表現：
2019－2020年參加東華北中早熟春玉米組綠色通道區域試驗，兩年平均畝產756.2千克，比對照鑫鑫1號增產9.6%。2020年生產試驗，平均畝產732.2千克，比對照鑫鑫1號增產8.3%。
栽培技術要點：
中等肥力以上地塊種植，適應區4月下旬至5月上旬播種，每畝種植密度4000－4500株。注意防治大斑病、絲黑穗病、灰斑病和莖腐病。
審定意見：
適宜在(zai)東華北(bei)(bei)(bei)中(zhong)(zhong)(zhong)早(zao)熟春(chun)玉米類型區(qu)的(de)黑龍江省第二積溫帶，吉(ji)林省延邊(bian)州、白(bai)山(shan)市(shi)(shi)(shi)(shi)(shi)(shi)的(de)部(bu)(bu)(bu)分(fen)地(di)區(qu)，通化市(shi)(shi)(shi)(shi)(shi)(shi)、吉(ji)林市(shi)(shi)(shi)(shi)(shi)(shi)的(de)東部(bu)(bu)(bu)，內蒙(meng)古(gu)中(zhong)(zhong)(zhong)東部(bu)(bu)(bu)的(de)呼倫貝爾市(shi)(shi)(shi)(shi)(shi)(shi)南部(bu)(bu)(bu)、興安(an)盟中(zhong)(zhong)(zhong)北(bei)(bei)(bei)部(bu)(bu)(bu)、通遼市(shi)(shi)(shi)(shi)(shi)(shi)扎魯特旗中(zhong)(zhong)(zhong)北(bei)(bei)(bei)部(bu)(bu)(bu)、烏(wu)蘭察布市(shi)(shi)(shi)(shi)(shi)(shi)前山(shan)、赤峰市(shi)(shi)(shi)(shi)(shi)(shi)中(zhong)(zhong)(zhong)北(bei)(bei)(bei)部(bu)(bu)(bu)、呼和浩特市(shi)(shi)(shi)(shi)(shi)(shi)北(bei)(bei)(bei)部(bu)(bu)(bu)、包頭市(shi)(shi)(shi)(shi)(shi)(shi)北(bei)(bei)(bei)部(bu)(bu)(bu)等中(zhong)(zhong)(zhong)早(zao)熟區(qu)，河北(bei)(bei)(bei)省張家口市(shi)(shi)(shi)(shi)(shi)(shi)壩下丘陵及河川、承德市(shi)(shi)(shi)(shi)(shi)(shi)中(zhong)(zhong)(zhong)南部(bu)(bu)(bu)中(zhong)(zhong)(zhong)早(zao)熟區(qu)，山(shan)西省中(zhong)(zhong)(zhong)北(bei)(bei)(bei)部(bu)(bu)(bu)大同市(shi)(shi)(shi)(shi)(shi)(shi)、朔(shuo)州市(shi)(shi)(shi)(shi)(shi)(shi)、忻(xin)州市(shi)(shi)(shi)(shi)(shi)(shi)、呂梁市(shi)(shi)(shi)(shi)(shi)(shi)、太原市(shi)(shi)(shi)(shi)(shi)(shi)、陽泉市(shi)(shi)(shi)(shi)(shi)(shi)海(hai)拔900－1100米的(de)丘陵地(di)區(qu)，寧(ning)夏南部(bu)(bu)(bu)山(shan)區(qu)海(hai)拔1800米以下地(di)區(qu)種植。
