杂交中稻大苗苗质与结实期群体源、库数量关系的研究  

Quantitative Relationship between the Quality of Big Seedlings and the Source and Sink of Population at Seed Setting Stages in Middle Hybrid Rice

作　　者：蒋之埙[1] 黄仲青[1] 孟月华 

机构地区：[1]安徽农业大学,安徽合肥230036 [2]宿州市科委,安徽宿州234000

出　　处：《作物学报》2002年第1期65-68,共4页Acta Agronomica Sinica

基　　金：安徽省"九五"科技攻关项目 (96110 2 6-1)

摘　　要：试验结果表明 :杂交中稻在 6～ 7叶期大苗单本移栽 ,苗质显著地影响结实期群体源、库及稻谷产量。结实期群体干物质增长量、总颖花量和稻谷产量与秧苗单株分蘖数、苗高干重比呈极显著或显著正相关 ,其定量关系可用y=a+bx直线回归方程表示。在旱、湿秧苗的单株分蘖数和苗高干重比指标量相似时 ,两育秧方式间的结实期群体干物质增长量、总颖花量和稻谷产量差异均不显著。江淮地区杂交中稻 6～ 7叶移栽 ,以秧苗单株分蘖数达 1.7～ 2 .0个 ,苗高干重比 5 .6～ 5 .The experiment results showed the quality of big seedling with 6～7 leaves dramatically influenced the source and sink of population at seed setting stage. The Production of dry matter, total number of spikelets and grain yield were significantly correlated with tillers/plant and dry weight/seedling height. The relationships can be expressed by equation y=a+bx. No significantly difference was found in the amount of dry matter? spikelets/m 2 and grain yield, when the tillers/plant and dry weight/seedling height were similar, irrespective of the seedlings raised in upland or lowland. Therefore, it is suitable that the seedlings with 6～7 leaces and tillers/plant 1.7～2.0, and dry weight/seedling height 5.6～5.8 should be transplanted for high yielding culture in Jianghuai region.

关 键 词：杂交中稻 大苗苗质 源库关系 结实期 群体 

分 类 号：S511.32[农业科学—作物学]