河南农业科学2025，Vol.54Issue(7)：21-29,9.DOI:10.15933/j.cnki.1004-3268.2025.07.003
株距与穴苗数配置对粳稻穗部性状、产量及品质的影响
Effects of Plant Spacing and Seedling Number per Hill Configurations on Panicle Traits,Yield and Quality of Japonica Rice
摘要
Abstract
The effects of different plant spacing(10,15,20 cm)and seedling number per hill(2,4,6 seedlings/hill)configurations on tiller dynamics,panicle traits,yield and grain quality of japonica rice were studied.A comprehensive evaluation was conducted to determine the optimal treatment using the TOPSIS method,so as to provide support for synergistic improvement of yield and quality in southern Henan Province.The results showed that the tiller number per hill and population tiller number increased with the increase of seedling number per hill;The tiller number per hill increased with the increase of plant spacing,but population tiller number decreased.The panicle length,primary branch number,secondary branch number and grain number of secondary branch increased with the decrease of seedling number per hill or increase of plant spacing.A opening-downward quadratic parabolic relationship was observed between basic seedling number and yield.The T8 treatment(plant spacing of 15 cm with 6 seedlings/hill)had the highest yield(9.68 t/ha),followed by T4 treatment(plant spacing of 10 cm with 4 seedlings/hill),there was no significant difference between these two treatments.High yield was attributed to elevated effective panicle number and grain number per panicle.The plant spacing,seedling number per hill and their interaction significantly affected grain quality.With the increase of seedling number per hill,milling and appearance quality tended to deteriorate,but taste value generally enhanced;With the increase of plant spacing,processing and appearance quality improved,but taste value generally decreased.TOPSIS analysis identified T8 treatment as the optimal treatment,followed by T4 treatment.Overall,either plant spacing of 15 cm with 6 seedlings/hill or plant spacing of 10 cm with 4 seedlings/hill can achieve high yield and quality for japonica rice in southern Henan Province.关键词
粳稻/株距/穴苗数/穗部性状/产量/品质Key words
Japonica rice/Plant spacing/Seedling number per hill/Panicle traits/Yield/Quality分类
农业科技引用本文复制引用
刘秋员,宋晓华,龚静阳,卫云飞,李猛,季新,刘娟,冯凡,王付娟,雷振山..株距与穴苗数配置对粳稻穗部性状、产量及品质的影响[J].河南农业科学,2025,54(7):21-29,9.基金项目
河南省重点研发专项(231111110500) （231111110500）
河南省科技攻关计划项目(242102110143,252102110163,252102110166) （242102110143,252102110163,252102110166）
河南省高等学校重点科研项目(25B210014) （25B210014）
信阳市重点研发与推广专项(20210006,20230023) （20210006,20230023）
