种植密度对紫米稻产量形成特性的影响

摘要

以紫米稻品种‘粮田紫1号’为材料,研究了不同种植密度对紫米稻产量形成特性的影响.结果表明,粮田紫1号全生育期较长,达146 d,生物产量达10 t/hm2以上,但经济产量仅3 t/hm2左右;种植密度对紫米稻有效穗数、每穗粒数、结实率与产量均有较大影响,本试验中株行距20.0 cm×20.0 cm处理产量最高,可达3.63t/hm2.粮田紫1号高产栽培关键技术措施有待进一步研究与完善.%‘ Liangtianzi No.1 ’ was used as material to study the influence of transplanting density on the yield formation characteristics of purple rice.The results showed that the whole duration of ‘ Liangtianzi No.1 ’ was 146 d.Its biomass yield was above 10 t/hm2,while its economic yield was only about 3 t/hm2.Transplanting density had a large impact on number of effective panicles,grains per spike,seed setting rate and yield of purple rice variety.In this experiment,planting spacing of 20.0 cm × 20.0 cm gained the highest yield,3.63 t/hm2.Key techniques for high-yielding cultivation of ‘ Liangtianzi No.1 ’ remain to further research.