稻虾共作模式下不同品种与栽插密度对双季杂交籼稻产量及其构成因素的影响  

Effects of Different Varieties and Planting Densities on Yield and Its Components of Doublecropping Indica Hybrid Rice Under Rice-crayfish Co-culture Mode

作　　者：曾华忠 吴庚勇 梁益珍 陆静丹 周维永 李经成 ZENG Huazhong;WU Gengyong;LIANG Yizhen;LU Jingdan;ZHOU Weiyong;LI Jingcheng(Rice Research Institute,Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding,Nanning,Guangxi 530007,China)

机构地区：[1]广西壮族自治区农业科学院水稻研究所/广西水稻遗传育种重点实验室,广西南宁530007

出　　处：《杂交水稻》2025年第1期90-95,共6页Hybrid Rice

基　　金：广西创新驱动发展专项基金项目(桂科AA22068087-5);广西重大科技创新基地/广西水稻遗传育种重点实验室自主创新课题(2022-36-Z01-ZZ03);广西农业科学院稳定资助科研团队项目(桂农科2023YT035)。

摘　　要：以早晚兼用杂交水稻品种(系)香118优726、丁香优263、万太优美占为材料,在稻虾共作模式下研究了品种和栽插密度对双季杂交籼稻产量、产量构成因素以及经济系数的影响。结果表明,品种对早稻产量、结实率和千粒重影响极显著,对有效穗数影响显著;品种对晚稻产量影响显著,对结实率影响极显著。密度对早、晚稻产量和有效穗数的影响极显著,对每穗总粒数、结实率和千粒重影响不显著。品种对早、晚稻的经济系数影响极显著,密度对早、晚稻的经济系数影响不显著。在稻虾共作模式下,有效穗数和结实率是影响水稻产量的主要因素,其次是每穗总粒数;经济系数具有相对稳定性,属品种固有特性。在9.1万~15.2万穴/hm^(2)栽插密度范围内,万太优美占在15.2万穴/hm^(2)密度下的早稻、晚稻产量最高,适宜在稻虾共作模式下作为早稻和晚稻大面积示范推广。Using Xiang 118 You 726,Dingxiangyou 263 and Wantaiyou Meizhan as the materials,the effects of variety and planting density on the yield,yield components and economic coefficients of double-cropping indica hybrid rice under rice-crayfish co-culture mode were studied.The results showed that the variety had a highly significant impact on the yield,seed-setting rate and 1000-grain weight and a significant impact on the number of effective panicles of early rice,and it had a significant impact on the yield and a highly significant impact on the seed setting rate of late rice.The effects of density on the yield and the number of effective panicles of early and late rice were highly significant,but it had no significant effect on the number of spikelets per panicle,seed setting rate and 1000-grain weight.The variety had a significant impact on the economic coefficient of early and late rice,while the density had no significant impact on the economic coefficient of early and late rice.Under the rice-crayfish co-culture mode,the number of effective panicles and seed setting rate were the main factors affecting rice yield,followed by the total number of grains per panicle.The economic coefficient had relative stability and was an inherent characteristic of the variety.Within the density range of 91000 to 152000 hills per hectare,Wantaiyou Meizhan had the highest yield for early and late rice at a density of 152000 hills per hectare,so it is suitable for large-scale demonstration and promotion of early and late rice under the rice-crayfish co-culture mode.

关 键 词：杂交水稻 稻虾共作模式 双季稻 品种 密度 产量 

分 类 号：S511.04[农业科学—作物学] S318