期刊论文

Influence of Different Basic Seedling Number on Tillering Dynamics and Yield Formation in Early Rice

中文

作物研究

1001-5280

2019

33

6

515-520

10.16848/j.cnki.issn.1001-5280.2019.06.02

IRT1239:教育部***和创新团队发展计划项目 2015NK3013:湖南省科学技术厅重点研发计划项目 2017NK32:中国科学院知识创新工程重要方向项目

本校为第一机构

以两系杂交早稻陵两优211与常规早稻品种湘早籼6号为材料,比较不同基本苗数对早稻农艺性状及产量构成因素的差异.结果 表明:(1)基本苗6～8苗/穴时,每穴茎蘖数明显多于1～4苗/穴处理,且能更早达到分蘖高峰.(2)分蘖期叶面积指数与基本苗数呈正相关,而在乳熟期叶面积指数、叶片SPAD值与基本苗数均呈负相关.(3)成熟期地下部分和地上部分干物质量随基本苗数增加表现为先增加后降低的趋势,地上部分干物质量均以移栽苗数4苗/穴最高,杂交早稻地下部分干物质量以移栽苗数4苗/穴最高.(4)产量随基本苗数增加而增加,有效穗数变化趋势与产量一致,每穗总粒数、实粒数和结实率与产量变化趋势相反,但每穗实粒数、...

Two-line hybrid early rice Lingliangyou 211 and conventional early rice variety Xiangzaoxian 6 were used as materials to compare the differences of agronomic traits and yield components between different basic seedlings and different rice varieties.The results showed that:(1) When the basic seedlings were 6-8 seedlings/hole,the number of tillers per hole was obviously more than that of 1-4 seedlings/hole treatment,and the tiller peak could be reached earlier,the tiller peak of transplanted seedlings with 1-4 seedlings/hole treatment was relatively late and not obvious.Leaf area index at tiller...