沿江稻区一季中稻产量性状及干物质积累特征特性研究  

Study on Yield Characters and Features of Dry Matter Accumulation of One-season High Yield Rice in Yangtze River

作　　者：王学会[1] 汪丽[1] 熊忠炯[1] 钱立礼 罗跃进[1] 

机构地区：[1]安徽省安庆市农业科学研究所,安徽安庆246003

出　　处：《安徽农业科学》2009年第27期12986-12988,共3页Journal of Anhui Agricultural Sciences

基　　金：安徽省粮食丰产工程项目(106023042)

摘　　要：[目的]探索沿江稻区一季中稻超高产田块干物质积累的特征特性,主攻沿江稻区一季中稻超高产生产的瓶颈技术。[方法]选用高产迟熟大穗型品种P88S/747进行强化栽培。[结果]P88S/747最高苗量达到578.3万株/hm2,成穗率仅为39.40%。有2个灌浆速度高峰,强势高峰值在齐穗后10 d左右,弱势高峰值在齐穗后38 d左右。叶面积指数在分蘖盛期、抽穗期、蜡熟期分别为5.60、7.34、4.26,物质输出率与运转率分别为32.30%、30.73%。[结论]沿江稻区水稻超高产栽培技术的难点是稳定提高水稻的分蘖成穗率;超高产栽培必须选用大穗型迟熟品种,增加生育后期肥料施用比例。[ Objective ] The study aimed to explore dry matter characters high yield and find the bottleneck technique of super-high production of one-season high yield rice in Yangtze River. [ Method] The high-yield , late-maturity and large spike variety P88S/747 was chosen to conduct intensified cultivation. [ Result] The high seedlings of P88S/747 reached 5 783 000/hm2, but the available spike rate was 39.40%. There were two filling peaks, strong filling peak appeared at 10 days after full heading stage, and sick filling peak appeared at 38 days after full heading stage. Leaf area index were respectively 5.60, 7.34 and 4.26 in the stage of active tillering, heading and dough. Matter output rate and matter transport rate were 32.30%, 30.73%, respectively. [ Conclusion] The key planting technique of high yield in Yangtze River was to increase stably available spike rate. Big spike varieties were needed in order to obtain high yield and increase fertilizer amount in the later growth stage of rice

关 键 词：沿江稻区 中籼稻 产量性状 干物质 

分 类 号：S511[农业科学—作物学]