不同播期、密度及施肥量对大麦新品种‘海花1号'产量的影响

Effects of seeding date and density and fertilizer rate on grain yield of new barley variety‘Haihua 1'

通过在上海地区的大田种植试验,研究了不同播期、不同播种密度及施肥量对优质啤麦品种‘海花1号'的产量及其构成因素的影响。结果表明:播种期对‘海花1号'的产量具有显著影响,适时的早播可有效增加其有效穗数,从而达到提高产量的目的;随播种密度的增加,产量呈现出先升后降的变化趋势,但变化幅度较小;施肥量未对其产量产生显著影响。为获得高产,较合适的播期是11月16日、播种密度240万/hm^2基本苗、施肥量270 kg/hm^2纯氮。

Field trails with the superior malting barley variety ＇Haihua 1 ~ were carried out in Shanghai area to investigate the effects of seeding date and density and fertilizer rate on the grain yield and yield components, The results showed that the seeding date had a significant effect on the grain yield, and timely early seeding could effectively increase the productive tillers, thus improving the yield. With the seeding density increasing the yield firstly ascended and then descended but the variation range was relatively small. The fertilizer rate had not a significant effect on the yield. In order to gain a high grain yield,the appropriate seeding date was November 16,basic seedlings was 2 400 000/hm2 and fertilizer rate was 270 kg/hm2 nitrogen.