播期对水稻籽粒灌浆特性的影响  

Effects of sowing date on grain-filling properties of rice

作　　者：袁继超[1] 刘从军[2] 朱庆森[1] 李俊青[2] 杨建昌[1] 

机构地区：[1]扬州大学农学院,江苏扬州225009 [2]四川农业大学农学院,四川雅安625014

出　　处：《西南农业学报》2004年第2期164-168,共5页Southwest China Journal of Agricultural Sciences

基　　金：四川省科技厅"十五"重点攻关项目资助(02NG020-003)

摘　　要：本文应用Richards模型研究了播种期对水稻籽粒灌浆特性的影响,结果表明,大粒型籼型品种滇屯502与粳型品种合系39相比,灌浆速度快,灌浆持续期短,弱势粒起动较慢,强、弱势粒之间达到最大灌浆速率的时间间隔较大;播种期不仅影响籽粒灌浆的起始势、灌浆速率和灌浆时间等灌浆特征参数的大小,而且还影响品种间及强弱势粒之间灌浆特征参数的差异。The effects of sowing date on grain-filling property of rice were studied with Richards growth model in this paper.The results were as follows:compared with that of Japonica rice Hexi 39,Indica rice Diantun 502,of which grains was larger,had higher grain-filling rate,shorter filling time,and larger difference of reaching maximum filling rate between superior and inferior spikelet.Sowing date of rice not only had effects on the grain-filling parameters,but also on the difference of grain-filling parameters between two varieties and between superior and inferior spikelets.

关 键 词：播期 水稻 籽粒灌浆 品种 灌浆速度 灌浆持续期 

分 类 号：S511.01[农业科学—作物学]