作　　者： (韩晴）; (张丹）; (卢媛）; (许梅玲）; (沈新芬）; (沈渊）; (王义发）; (沈雪芳）;

机构地区： 上海市农业科学院作物育种栽培研究所,上海201403

出　　处： 《上海农业学报》 2017年第4期40-42,共3页

摘　　要： 以‘沪玉糯5号’(紧凑型)和‘沪玉糯2号’(平展型)为材料,研究了3种施肥方法对2种株型玉米产量和相关经济性状的影响。结果表明:2个品种在施肥方法A2下平均产量最高,为11 531 kg/hm^2;‘沪玉糯5号’的产量达12 997 kg/hm^2,极显著高于‘沪玉糯2号’(9 168 kg/hm2)。3种施肥方法在秃尖方面存在显著差异,在穗长、穗粗、穗行数、行粒数、百粒重、出籽率方面差异不显著;2个品种在穗长、穗粗、穗行数、行粒数、出籽率、秃尖方面存在极显著差异,百粒重无显著差异。因此,适宜的尿素施用方法是苗期315 kg/hm^2,拔节期135 kg/hm^2;紧凑株型‘沪玉糯5号’产量显著高于平展株型‘沪玉糯2号’,性状表现好。 The effects of 3 fertilization methods on the yield and related economic characters of 2 plant types of maize were studied in this paper, taking ＇ Huyunuo 5＇ （compact type）and ＇ Huyunuo 2＇ （flat type）as materials. The results showed that the average yield of fertilization method A2（ 11 531 kg/hm^2） was the highest, the yield of ＇ Huyunuo 5＇ was 12 997 kg/hm^2, which was significantly higher than that of ＇ Huyunuo 2＇ （9 168 kg/hm^2）. There were significant differences in ear barren tip ,and no significant difference in ear length, ear diameter,row number,grain number per row, 100-grain weight and seed rate between the 3 methods. There were very significant differences in ear length, ear diameter, row number, grain number per row, seed rate and ear barren tip, no significant difference in 100-grain weight between the 2 varieties. Therefore, the appropriate method of urea application was 315 kg/hm^2 in seeding stage and 135 kg/hm^2 in jointing stage respectively. The yield of compact type maize ＇ Huyunuo 5 ＇ was significantly higher than that of flat type maize ＇ Huyunuo 2＇ , which had good characters.

关 键 词： 糯玉米 施氮方法 株型 穗部性状 产量