超高产水稻的分蘖特性观察  

Traits of tiller growth and development of super high-yield rice

作　　者：杨惠杰[1] 李义珍[1] 杨高群 

机构地区：[1]福建省农业科学院稻麦研究所,福建福州350019 [2]云南省丽江地区农业科学研究所,云南丽江674100

出　　处：《福建农业学报》2003年第4期205-208,共4页Fujian Journal of Agricultural Sciences

基　　金：中国超级稻项目--籼型超级稻选育与栽培体系

摘　　要：在云南省永胜县涛源乡,追踪观察了21个水稻超高产品种的分蘖生育过程,分析结果表明,有效分蘖临界期在移栽后20～25 d,历4个出叶周期;分蘖高峰期在移栽后35 d左右,又历2个出叶周期。说明,本田期有效分蘖的同伸叶为移栽后头4片新生叶,无效分蘖的同伸叶为移栽后第5、6片新生叶。研究结果可作为分蘖调控的叶龄指标。The processes of tilier growth and development of 21 super high-yield rice varieties were observed in Taoyuan Town, Yongsheng County, Yunnan Province in 1998 -2000. The results showed that the critical period of effective tiller and the highest tiller stage were 20 - 25 d and around 35 d after transplanting, respectively, and completed four and two cycles of leafing respectively, indicating that 'synchronization leaves' of effective tiller and ineffective tiller in the field period were the first four new leaves and the fifth to sixth new leaves after transplanting, respectively. The simple and clear indexes of leaf age were proposed for rice tiller regulation.

关 键 词：水稻 分蘖特性 云南 永胜县 品种 生育 有效分蘖临界期 出叶周期 移栽 分蘖高峰期 叶龄指标 

分 类 号：S511.01[农业科学—作物学]