浙江省9个晚粳稻代表品种的农艺性状分析

Analysis of agronomic traits of 9 representative varieties of late japonica rice in Zhejiang Province

分析浙江省历年审定的9个晚粳稻代表性品种的农艺性状及农艺性状和产量之间的关系,可以了解各农艺性状对产量的影响,以及探索浙江省晚粳稻品种审定的规律。研究选取9个历年审定晚粳稻品种中表现较好,具有代表性的品种,采用催芽后撒播移栽到大田的方式,测量株高、茎粗、分蘖、剑叶长、剑叶宽、叶绿素含量等农艺性状。剑叶宽和茎粗是各农艺性状中对产量影响最大的2个因素,2010—2019年的3个品种茎粗和剑叶宽为3个时间段中最大的,由此可以看出,茎粗和剑叶宽是农艺性状中对晚粳稻品种产量影响最大的,且浙江省育种研究者也一直在提升晚粳稻的茎粗和剑叶宽。

The relationship between agronomic traits and yield of nine representative late japonica rice varieties in Zhejiang Province was analyzed.The effects of agronomic traits on yield could be understood,and to find the rules of late japonica rice variety examination and approval in Zhejiang province.In this study,nine late japonica rice varieties with good performance in Zhejiang Province were selected,and the representative varieties were transplanted to the field after accelerating germination,agronomic traits such as plant height,stem diameter,tillering,flag leaf length,flag leaf width and chlorophyll content were measured.Flag leaf width and stem diameter were the two most important factors affecting yield.The average stem diameter and flag leaf width of three cultivars in 2010-2019 were the largest in three periods,stem diameter and flag leaf width were the most important agronomic traits affecting yield of late japonica rice,and breeding researchers in Zhejiang Province had been increasing stem diameter and flag leaf width of late japonica rice.