【摘要】 黔玉5号为外引自交系53与自育系4011杂交获得单交种,再与外引自交系交51杂交获得三交种(黔412)的组合,于2009年6月通过贵州省农作物品种审定委员会审定。该组合在2004-2007年贵州省高寒山区特殊生态组2年区试中平均单产548.99kg/667m2,比对照毕单10号和盘玉5号分别增产13.3%和14.98%,2年14个试点中有13个点增产,占93.75%;生产试验平均单产601.5kg/667m2,比对照毕玉6号增产7.51%,5个试点中有4个点增产,占80%。黔玉5号全生育期144～146d,适应性广、丰产稳产性好,在贵州西部高寒山区具有广泛的适应性和良好的丰产性,适宜种植密度2 500～3 800株/667m2。更多还原

【Abstract】 Qianyu 5,bred from 53(an introduced inbred line)×4011(an inbred line bred by Guizhou Institute of Upland Crops) was approved by Guizhou Crops Variety Examination Committee in June,2009.The average yield of Qianyu 5 in the special ecological group of Guizhou maize regional tests during 2004-2007 was 548.99kg/667m2,13.3% and 14.98% higher than Bidan 10 and Panyu 5 respectively and the tested sites with yield increase in two years accounted for 95% of total tested sites.The average yield of Qianyu 5 in the productive test was 601.5kg/667m2,7.51% higher than Biyu 6 and the tested sites with yield increase accounted for 80% of total tested sites.The optimum planting density of Qianyu 5 with good high and stable yield ability,wide adaptability and 144～146 d growth period was 2 500～3 800 plants/667 m2 in cold mountain regions of Guizhou Province.更多还原