豫南粳稻高产优质障碍因子与栽培对策

研究结果表明，豫南粳稻高产优质的主要障碍是高温引起灌浆结实能力下降、品质降低；高温高湿在抽穗灌浆期引起稻瘟病、纹枯病严重发生；三化螟三代在怀苞抽穗期集中危害。推迟粳稻播期和抽穗灌浆期，可有效改善粳稻抽穗灌浆期生态环境，排除上述障碍。该对策得到了田间试验结果的支持。

The Impedmient Factors of High Yield and Fine Quality and The Planting Countermeasure of Japomica Hybrid Rice in South Henan

This paper reported the research result of the writer:The main impedmient factors of high yield and fine quality of Japonica Hybrid Rice in South Henan is the high temperation beget the power of grain hilling descended and the grain quality impaired; the high temperation and high humidity in the heeding time beget the Rice Blast and Sheath Bligh dieased heavy and the third generation of Yellow Sterm Borer endanger the plant heavy. Delay the seeding time and the heeding time can improve the environment in the heeding of Japonica Hybrid Rice ,this Planting Countermeasure eliminated the impedient factors, and validated by field trial.