不同穗型水稻品种直播产量及其群体质量特征的研究  

Studies on Yield and Characteristics of Plant Population Quality of Direct-seeded Rice Cultivars of Different Panicle Types

作　　者：钱银飞[1] 张洪程[1] 李杰[1] 陈烨[1] 郭振华[1] 吴文革[1,2] 戴其根[1] 霍中洋[1] 许轲[1] 李德剑 周有炎 

机构地区：[1]扬州大学江苏省作物遗传生理重点实验室,江苏扬州225009 [2]安徽省农科院水稻研究所,安徽合肥230031 [3]江苏省兴化市农业局,江苏兴化225700

出　　处：《江西农业大学学报》2008年第5期766-772,共7页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家粮食丰产科技工程(2004BA520A03,2006BAD02A03)

摘　　要：以江苏近年育成的10个中熟中粳水稻品种(系)为直播材料,依品种在直播条件下形成的不同穗重进行划分为大中小3种穗型,研究其产量及其群体质量特征。结果表明:3种穗型水稻以中穗型水稻品种在直播栽培条件下产量较高,主要原因是其在较高有效穗的基础上增加了穗粒数,即颖花量显著增加。同时其产量的提高也依赖于关键生育期较高的LAI和高的干物质积累量,高的茎鞘物质输出率和茎鞘物质表观转换率和转化率,同时保持了较高的成穗率等源库协调的群体质量特征。依据不同穗型品种产量及群体质量特征,对直播稻品种的合理选用及高产途径进行讨论。10 ,ypical mid -maturity mid -season Japonica rice cultivars newly bred in Jiangsu Province in recent years were used as materials, and were classified by the panicle weight into three types of big panicle type cultivars, middle panicle type cultivars and small panicle type cultivars. All the cultivars for test were field grown under the direct seeding conditions. The characteristics of grain yield and its components and characteristics of plant population quality were investigated. The results showed that the middle panicle type cultivars had higher grain yield than other panicle type cultivars. High grain yield of middle panicle type cultivars was mainly due to the increase in total number of spikelets, and increase in spikelets resulted mainly from panicles based on a suitable number of panicles, and also the high grain yield of middle panicle large type was due to the higher leaf area index and biomass accumulation and higher output and higher appearing transformation and appearing convertion of dry matter of the stem and sheath as well as the higher rate of effect ears. Approaches to choosing suitable direct seeding cultivars and getting high yield are discussed based on the characteristics of grain yield and its components and characteristics of the plant oopulation Quality.

关 键 词：直播稻 穗型 产量 群体质量特征 

分 类 号：S5-024[农业科学—作物学]