豫南粳稻播期调整后抽穗灌浆期间温度变化及对产量和品质的影响

Effect of the Change of Temperature in Filling Stage on Grian Yield and Rice Quality After Adjusting Seeding Time of Japonica Hybrid Rice in South Henan

分析了调整播种期后10个品种灌浆成熟期日均温的变化以及产量和稻米品质的变化,指出在豫南稻区调整播种期后粳稻产量增加和稻米外观品质变好的根本原因是灌浆期的温度条件更适宜于粳稻的灌浆结实,有利于产量形成和品质提高。

Analyzed the change of temperature in filling stage,and the change of grian yield and rice quality of 10 varieties after adjusting seeding time.Pointed out the reason of grain yield increased and rice quality improved after postpones seeding time is the tempertature in filling stage suitable to seed filling, the suitable temperature is advantageous to increase grain yield and improve appearance quality.