秋季施氮对禾草产量与品质的影响

THE EFFECTS OF APPLING NITROGEN FERTILIZER IN AUTUMN ON THE BIOMASS AND QUALITY OF GRASS

新西兰北岛南部草地施氮结果表明,秋季施氮是提高生物生产力的重要措施。在2月底到3为底期间施氮,效果最好。施氮不仅能提高生物生产力,还可提高牧草中蛋白质含量,从而提高牧草品质,但施氮使牧草中磷含量降低,这很值得我们重视。

The results of fertilizer experiment in Palmerston North, New Zealand show that nitrogen fertilizer is an important element to increase bioproduct of grassland. Its effects of nitrogen fertilizer on increase of bioproduct is the highest during the end fo February and end of March. The nitrogen fertilizer can not only increase a bioproduct but also can raise the protein content, but nitrogen fertilizer can reduce the P content of forage.