论文部分内容阅读
为了探明直播杂交稻在不同播种量下的生长与产量表现,以杂交稻隆两优1212、隆两优华占、晶两优华占为材料,采用人工撒播栽培方式进行不同播种量(11.25,22.50,33.75 kg/hm~2)大田试验。结果表明,随着播种量的增加,3个品种的产量和成熟期干物重表现为增加趋势;不同播种量主要通过调节有效穗、每穗总粒数来影响产量。与中播种量处理相比,高播种量处理产量增加幅度较小,而用种量大幅增加,综合产量和种子成本,杂交稻直播栽培的播种量以22.5 kg/hm~2为宜。
In order to investigate the growth and yield performance of direct hybrid rice under different sowing rates, the effects of different sowing rates (11.25 , 22.50,33.75 kg / hm ~ 2) field test. The results showed that with the increase of seeding rate, the dry matter weight of three varieties showed an increasing trend at the yield and maturity stage. Different sowing rates affected the yield mainly by adjusting the effective panicles and the total grains per panicle. Compared with the medium sowing treatment, the yield of high sowing treatment increased less, but the sowing quantity of direct sowing hybrid rice was 22.5 kg / hm ~ 2 with the significant increase in the yield, the comprehensive yield and the seed cost.