CAJ | 학술논문

[目的]研究施氮对不同超高产夏玉米品种产量及氮素吸收利用的影响,为因品种科学施用氮肥提供依据。[方法]通过大田试验研究了不同施氮量对郑单958和浚单202个超高产夏玉米品种产量、氮素吸收积累与氮肥效率的影响,明确2个品种施氮效应差异。[结果]施氮对2个夏玉米品种增产显著,郑单958在低氮时产量和收益最高,分别为12051.18kg/hm2和1722.40元/hm2,而浚单20在高氮时产量和收益最佳,分别为13166.00kg/hm2和1343.92元/hm2;在0、240和450kg/hm23个氮水平下浚单20比郑单958分别增产9.90%、5.20%和12.00%。施氮条件下,浚单20蛋白质产量显著高于郑单958,高施氮量有利于浚单20获得较高的蛋白质产量。高氮水平下浚单20的氮素利用效率、氮肥利用率和氮肥偏生产力显著高于郑单958。[结论]生产中郑单958适宜施用较低的氮肥用量,而浚单20适当增加氮肥用量可获得较好收益。该结果为科学施用氮肥提供了参考依据。
[목적]연구시담대불동초고산하옥미품충산량급담소흡수이용적영향,위인품충과학시용담비제공의거。[방법]통과대전시험연구료불동시담량대정단958화준단202개초고산하옥미품충산량、담소흡수적루여담비효솔적영향,명학2개품충시담효응차이。[결과]시담대2개하옥미품충증산현저,정단958재저담시산량화수익최고,분별위12051.18kg/hm2화1722.40원/hm2,이준단20재고담시산량화수익최가,분별위13166.00kg/hm2화1343.92원/hm2;재0、240화450kg/hm23개담수평하준단20비정단958분별증산9.90%、5.20%화12.00%。시담조건하,준단20단백질산량현저고우정단958,고시담량유리우준단20획득교고적단백질산량。고담수평하준단20적담소이용효솔、담비이용솔화담비편생산력현저고우정단958。[결론]생산중정단958괄의시용교저적담비용량,이준단20괄당증가담비용량가획득교호수익。해결과위과학시용담비제공료삼고의거。
[Objective] The aim was to study on effects of N fertilizer on yield, N absorption and utilization of different cultivars of super high-yielding summer maize, in order to provide reference for reasonable N fertilization in accordance with different cultivars. [Method] Field experiment was conducted to study on effects of different N fertilizers on yield, N absorption and use efficiency of Zhengdan 958 and Xundan 20, in order to learn the effect differences at different N fertilizer levels. [Result] After N was applied, yields of the two summer maize increased significantly. Zhengdan 958 achieved the highest in yield and proceeds at 12 051.18 kg/hm2 and 1 722.40 yuan/hm2, respectively in low N level. In contrast, Xundan 20 achieved the highest at 13 166.00 kg/hm2 and 1 343.92 yuan/hm2 in the above two aspects in high N level. Compared with Zhengdan 958, Xundan 20 increased by 9.90%, 5.20% and 12.00% in N levels of 0, 240, and 450 kg/hm2, respectively. When N fertilizers were applied, protein yield of Xundan 20 was significantly higher than that of Zhengdan 958, so that higher N fertilizers contributed higher protein yield for Xundan 20. In high N level, N efficiency, N-fertilizer utilization and partial productivity of Xundan 20 were significantly higher than that of Zhengdan 958. [Conclusion] Lower N-fertilizer was suitable for Zhengdan 958 and Xundan 20 would get a good harvest if more N-fertilizers were applied. The results provided references for reasonable N fertilization.