不同机插株距对徽两优5号群体结构及产量形成的影响  

Effect of Different Plant Space on the Population Structure and Yield Formation of Huil-iangyou 5 with Mechanical Transplanting

作　　者：高尚 李胜群 陈刚[1] 张毅[1] 瞿明定 孙雪原 

机构地区：[1]安徽省农业科学院水稻研究所,合肥230031 [2]安徽省凤台县水稻原种场,安徽凤台232100

出　　处：《中国稻米》2015年第4期160-162,共3页China Rice

基　　金：国家科技支撑计划"江淮杂交中籼水稻持续丰产高效关键技术研究"(2011BAD16B06-3);江淮地区水稻大面积稳定增产关键技术研究(2012BAD04B09-2);国家水稻产业技术体系(CARS-01-53)

摘　　要：以杂交中籼稻徽两优5号为材料,研究不同机插株距(行距固定为30 cm)对其群体建成和产量形成的影响。结果表明,在机插株距为14 cm的条件下,徽两优5号产量构成因素协调,理论产量达到11 228.8 kg/hm2;群体茎蘖消长表现平稳,无效分蘖减少;抽穗至成熟期干物质生产量较高,占总干物质量的44.8%;基部节间短而粗,有利于降低徽两优5号在机插条件下的倒伏风险,从而发挥高产潜力。The effects of different plant space on the population structure and yield formation with mechanical transplanting of mid-season indica rice Huiliangyou 5 were studied. The results showed that the theoretical yield of Huiliangyou 5 reached 11 228.8 kg/hm^2 and its components were coordinate with the machine-transplanted space of 14 cm and fixed row space of 30 cm. The increase and decrease of the stems and tillers were smooth and the ineffective tillers decreased. The production of dry matter from heading to mature period in-creased with 44.8% to total dry matter production. The basal internodes were shortened and the stem diameter increased for decreasing the lodging risk of Hui Liangyou5 and fulfilling potential of high yield with mechanical transplanting.

关 键 词：水稻 机插 株距 群体结构 产量 

分 类 号：S511.04[农业科学—作物学]