水稻旱育稀植施肥技术的研究

本文总结了1985～1987年寒地水稻旱育稀植高产栽培施肥的技术。试验结果表明,水稻产量随施肥量的增加而增加,施肥量过高产量下降;水稻株高、有效分蘖、空秕率均随施肥量增加而增加。在适宜施肥水平,水稻茎秆直立无倒伏,在高肥水平茎秆有倾斜。增加氮肥比例,水稻株高和空秕率增加,千粒重降低;增加磷肥比例,空秕率降低,千粒重提高;降低钾肥比例,有效穗数和产量下降。

STUDIES ON FERTILIZER DRESSING TECHNIQUES OF DRY-RAISING & SPARSE-PLANTING RICE

The paper decribed the experience of cultivation and fertilizer dressing techniques of dry-raising and sparse-planting rice for high yield on large areas from 1985 to 1987. The results indicated that the rice yield increased as the fertilizer was increased and the differences between the treatments were significant. The rice height, effective tillering and blighted grains increased as the fertilizer was increased. No lodgings appeared at suitable fertilizer level but rice slanted at high level. With the increase of the proportion of N the rice height and blighted grains increased but the grain weight became less; with the increase of the proportion of P blighted grains became fewer but grain weight larger; with the increase of K fertilizer proportion effective ears and yields increased.