氮肥不同施入量对水稻新品种盐粳228产量的影响

采用小区对比试验方法,探讨了氮肥不同施入量对水稻新品种盐粳228产量的影响。结果表明,适宜增加氮肥施入量,可增促进水稻新品种盐粳228的单位面积收获穗数、颖花量,以及每穗成粒数和千粒重的增加,提高了产量。但过量增加氮肥施入量则降低植株抗病、抗倒能力,进而造成减产。在本试验条件下,单产以处理B3最高,为9.15 t/hm2,比B4、B2、B5、B1处理分别增产了1.2%、3.0%、5.9%和8.5%。

The Effect of Nitrogen Amounts on the Yield of Yanjing228

The effect of Nitrogen amounts on the yield were discussed through comparative test. The results indicated that appropriately increasing Nitrogen amounts can increase the effective panicles per unit area, flowers, grains per panicle and 1000-grain weight, then increase the yield. But over-fertilization of N can reduce the ability of lodging resistance and disease and then causes crop reduction. In the experiments, the yield of treatment 3 was highest which were 9.15 t/hm^2 and increase production 1.2%,3.0%,5.9% and 8.5% than B4, B2, B5, B1.