论文部分内容阅读
京早7号(黄早四×罗系3)于1975年育成,为早熟杂交种。经过四年的观察鉴定,试种示范,表现突出。普遍反映京早7号综合性状好。夏播亩产一般为700—800斤,高的可达千斤以上。一、产量表现:1976年在北京海淀区苏家坨公社试验站参加华北地区夏玉米区域试验,京早7号亩产950斤,在8个供试品种中居第一位,比对照“京黄113”增产16.9%。1977年在北京市各区县品比试验和联合区试共22个点中,产量居首位的有19个点(22个点中,13个点为平播,9个点为三茬套播)。北京通县乔庄良种场麦茬平播京早
Beijing early on the 7th (yellow morning four × Luo Department 3) bred in 1975, as a precocious hybrid. After four years of observation and identification, demonstration demonstration, outstanding performance. Generally reflect the early morning Beijing 7 good overall trait. Summer sow mu production is generally 700-800 pounds, up to over a thousand pounds high. First, the production performance: In 1976 in Beijing Haidian District Sujiatuo commune pilot station to participate in the North China summer maize regional trial, Beijing early morning yield per kilogram on the 7th, in the eight varieties tested in the first place, than the control “Beijing yellow 113 ”increase of 16.9%. In 1977, in all 22 counties in Beijing, a total of 22 spots were tested, with the highest output of 19 spots (of 22 spots, 13 spots were sowing and 9 spots were sowing of the third crop) ). Beijing Tong County Qiao Zhuang good wheat field planting broadcast early morning Beijing