CAJ | 학술논문

以8个夏谷品种为材料,在大田试验条件下,系统研究了谷子产量和氮肥利用效率的品种间差异及对氮肥的响应。结果表明,8个夏谷品种的平均产量以施氮处理显著高于不施氮处理,平均增产率为8．2%；氮肥对8个品种的增产效应不同,以济谷14、济谷17和济谷18增产效果显著,而对其它品种的产量无显著的促进作用。8个夏谷品种的氮肥利用效率存在差异；氮肥农学效率以济谷14最高,与其它品种达显著性差异；而豫谷18和济谷18的氮肥偏生产力显著高于其它品种。因此,在华北夏谷生产中,应结合当地生产情况和不同品种氮肥利用特性进行品种的选择和应用。
이8개하곡품충위재료,재대전시험조건하,계통연구료곡자산량화담비이용효솔적품충간차이급대담비적향응。결과표명,8개하곡품충적평균산량이시담처리현저고우불시담처리,평균증산솔위8．2%；담비대8개품충적증산효응불동,이제곡14、제곡17화제곡18증산효과현저,이대기타품충적산량무현저적촉진작용。8개하곡품충적담비이용효솔존재차이；담비농학효솔이제곡14최고,여기타품충체현저성차이；이예곡18화제곡18적담비편생산력현저고우기타품충。인차,재화북하곡생산중,응결합당지생산정황화불동품충담비이용특성진행품충적선택화응용。
Eight summer foxtail millet cultivars were used to investigate the effect of nitrogen fertilizer application on summer foxtail millet yield and nitrogen use efficiency in field research. The result showed that nitrogen fertilizer treatments significantly increased average grain yield of eight millet cultivars compared with no fertilizer treatment, and the average increase rate was 8. 2%. The yield increase of eight millet cultivars responded differently to nitrogen fertilization. The nitrogen application sig-nificantly increased yields of jigu14, jigu17 and jigu18, but had no effect on other foxtail millet cultivars. The nitrogen use ef-ficiency was different among the eight summer foxtail millet cultivars, the agronomic efficiency of jigu14 was the highest and partial factor productivity of yugu18 and jigu18 were significantly higher than other foxtail millet cultivars. So the summer foxtail millet cultivars should be chosen considering both local situations and the different nitrogen character in north China.