中科玉509
作物種類：玉米
種子類別：雜交種
審定編號(hao)：國審玉20206131
品種權號：
特征特性：
東華北中晚熟春玉米組出苗至成熟127.6天，比對照鄭單958早熟0.8天。幼苗葉鞘紫色，葉片深綠色，葉緣紫色，花藥淺紫色，花絲淺紫色，穎殼綠色。株型緊湊，株高289厘米，穗位高105厘米，成株葉片數20片左右。果穗筒形，穗長20.2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36.4克。接種鑒定，中抗灰斑病、莖腐病、穗腐病，感大斑病、絲黑穗病。籽粒容重778克/升，粗蛋白含量10.20%，粗脂肪含量3.44%，粗淀粉含量74.49%，賴氨酸含量0.31%。
產量表現：
2018－2019年參加東(dong)華北中晚熟春玉米組綠色通道區域試驗(yan)，兩(liang)年平均(jun)畝產(chan)(chan)773.1千(qian)克，比對(dui)照鄭單958增(zeng)產(chan)(chan)7.24%。2019年生(sheng)產(chan)(chan)試驗(yan)，平均(jun)畝產(chan)(chan)787.6千(qian)克，比對(dui)照鄭單958增(zeng)產(chan)(chan)6.50%。
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株左右。注意防治大斑病和絲黑穗病。
適宜種植區域：
適(shi)宜在東華北(bei)(bei)中晚熟(shu)春玉米區(qu)(qu)(qu)(qu)(qu)(qu)(qu)的(de)吉(ji)(ji)林省四平市(shi)(shi)(shi)(shi)(shi)(shi)、松原(yuan)市(shi)(shi)(shi)(shi)(shi)(shi)、長(chang)春市(shi)(shi)(shi)(shi)(shi)(shi)的(de)大部(bu)(bu)分(fen)地區(qu)(qu)(qu)(qu)(qu)(qu)(qu)，遼源市(shi)(shi)(shi)(shi)(shi)(shi)、白城(cheng)市(shi)(shi)(shi)(shi)(shi)(shi)、吉(ji)(ji)林市(shi)(shi)(shi)(shi)(shi)(shi)部(bu)(bu)分(fen)地區(qu)(qu)(qu)(qu)(qu)(qu)(qu)、通(tong)化(hua)市(shi)(shi)(shi)(shi)(shi)(shi)南部(bu)(bu)，遼寧(ning)省除東部(bu)(bu)山(shan)區(qu)(qu)(qu)(qu)(qu)(qu)(qu)和(he)大連市(shi)(shi)(shi)(shi)(shi)(shi)、東港(gang)市(shi)(shi)(shi)(shi)(shi)(shi)以外的(de)大部(bu)(bu)分(fen)地區(qu)(qu)(qu)(qu)(qu)(qu)(qu)，內蒙古赤峰市(shi)(shi)(shi)(shi)(shi)(shi)和(he)通(tong)遼市(shi)(shi)(shi)(shi)(shi)(shi)大部(bu)(bu)分(fen)地區(qu)(qu)(qu)(qu)(qu)(qu)(qu)，山(shan)西省忻州(zhou)市(shi)(shi)(shi)(shi)(shi)(shi)、晉(jin)中市(shi)(shi)(shi)(shi)(shi)(shi)、太原(yuan)市(shi)(shi)(shi)(shi)(shi)(shi)、陽泉(quan)市(shi)(shi)(shi)(shi)(shi)(shi)、長(chang)治(zhi)市(shi)(shi)(shi)(shi)(shi)(shi)、晉(jin)城(cheng)市(shi)(shi)(shi)(shi)(shi)(shi)、呂梁市(shi)(shi)(shi)(shi)(shi)(shi)平川區(qu)(qu)(qu)(qu)(qu)(qu)(qu)和(he)南部(bu)(bu)山(shan)區(qu)(qu)(qu)(qu)(qu)(qu)(qu)，河北(bei)(bei)省張家(jia)口市(shi)(shi)(shi)(shi)(shi)(shi)、承德市(shi)(shi)(shi)(shi)(shi)(shi)、秦皇島市(shi)(shi)(shi)(shi)(shi)(shi)、唐(tang)山(shan)市(shi)(shi)(shi)(shi)(shi)(shi)、廊坊市(shi)(shi)(shi)(shi)(shi)(shi)、保定市(shi)(shi)(shi)(shi)(shi)(shi)北(bei)(bei)部(bu)(bu)、滄(cang)州(zhou)市(shi)(shi)(shi)(shi)(shi)(shi)北(bei)(bei)部(bu)(bu)春播(bo)區(qu)(qu)(qu)(qu)(qu)(qu)(qu)，北(bei)(bei)京市(shi)(shi)(shi)(shi)(shi)(shi)春播(bo)區(qu)(qu)(qu)(qu)(qu)(qu)(qu)，天津(jin)市(shi)(shi)(shi)(shi)(shi)(shi)春播(bo)區(qu)(qu)(qu)(qu)(qu)(qu)(qu)種(zhong)植。
