两系法杂交水稻培两优特青双晚栽培的高产特性及栽培对策研究  

Studies on the High-yielding Characteristics and Agronomic Practices of Two-line Hybrid Rice Peiliangyou Teqing in Late Season

作　　者：潘晓华[1] 石庆华[1] 程永盛 李木英[1] 

机构地区：[1]江西农业大学农学院

出　　处：《杂交水稻》1998年第1期18-20,共3页Hybrid Rice

基　　金：江西省科委重点项目

摘　　要：有效穗和结实率是左右培两优特青谷产量高低的主要因素。增加种植密度和前期适量施用氮肥，有利于提高有效穗而获得高产；施用占总氮量１５％左右的粒肥，维持灌浆结实期的根系活力，是发挥培两优特青生育后期干物质生产优势，提高结实率而实现高产的重要保证。The number of effective panicles and seed setting percentage were the main factors for grain yield of Peiliangyou Teqing. Increasing planting density, fertilizing appropriate amount of nitrogen at early growth stage were very important for more effective panicles and higher grain yield. Applying nitrogen fertilizer at a rate of 15% total amount in heading stage to maintain higher root activity during ripening stage was the guarantee for bringing the superiority of dry matter production in late growth stage into full play, raising seed setting percentage and thus increasing the grain yield of Peiliangyou Teqing.

关 键 词：两系法杂交水稻 培两优特青 高产特性 农艺对策 

分 类 号：S511.04[农业科学—作物学]