TANG Jinrong.Effects of Transplanting Density on Growth, Development, and Yield of Different Cold-Region Japonica Rice Varieties[J].HEILONGJIANG AGRICULTURAL SCIENCES,2026,(03):7-13.[doi:10.11942/j.issn1002-2767.2026.03.0007]
插秧密度对不同寒地粳稻生长发育及产量的影响
- Title:
- Effects of Transplanting Density on Growth, Development, and Yield of Different Cold-Region Japonica Rice Varieties
- 文章编号:
- 2
- Keywords:
- cold region; japonica rice; transplanting density; growth and development; yield; constituent factors
- 文献标志码:
- A
- 摘要:
- 为明确寒地粳稻的最适插秧密度，促进黑龙江省水稻优质高产栽培技术的建立并指导生产，以黑龙江省农业科学院绥化分院选育的9个水稻品种为供试材料，于2024年在黑龙江省农业科学院绥化分院园区试验地进行，设置D1：30.0 cm×13.3 cm（常规插秧密度）、D2：30.0 cm×10.0 cm、D3：30.0 cm×6.6 cm 3个密度处理，共27个小区，通过分析插秧密度对不同水稻品种农艺性状、产量等指标的影响，期望明确黑龙江省水稻最适插秧密度。结果表明，插秧密度对各品种的齐穗期基本无影响，但对株高和穗长具有显著调控作用，稻米长宽比受密度影响较小，其变化趋势因品种基因、耐密特性等因素而异。增加插秧密度使产量增加0.35%～25.77%，其中D3密度下的绥粳27和D2密度下的绥粳303产量分别达7 593.48 和6 074.78 kg·hm-2，较D1处理显著增产25.77%和20.14%，且产量与千粒重呈显著正相关（P≤0.05），每穗粒数和千粒重则与单位面积有效穗数呈极显著的负相关（P≤0.01）。综上，黑龙江省绥化市地区水稻生产过程中，针对绥粳4号、绥粳309、绥粳303、绥粳310、绥粳336、绥粳341、绥粳344等穗粒兼顾型品种选用D2密度最佳，绥粳27和绥粳313等籽粒偏小的耐密品种则选用D3密度表现较好，但与D2密度处理相比差异不大，相较下D2密度更具普适性，适宜黑龙江省绥化市及同类生态区寒地粳稻生产种植过程中应用。
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备注/Memo
收稿日期：2026-01-05