广陵香粳不同产量水平的群体数量和质量特征研究  

Quality and quantity characters of different yield level of Guangling Xiangjing

作　　者：张亚洁[1] 何丽华[2] 沙爱红[1] 高海霞 苏祖芳[1] 

机构地区：[1]扬州大学农学院,江苏扬州225009 [2]江苏省农林厅,江苏南京210013 [3]常州市郊区农业局,江苏常州213001

出　　处：《河南科技大学学报（农学版）》2003年第4期1-4,20,共5页

基　　金：国家开发办种养业高新技术示范资助项目(BJ99058;YN02031)

摘　　要：采用密肥处理,研究广陵香粳不同产量水平的群体数量和质量特征,结果表明产量在10500kg·hm-2水平以上高产群体特征为:适宜基本苗170万～180万株·hm-2,穗数340万～345万穗·hm-2,成穗率85%以上,每穗粒数140～145粒,千粒重26.5～26.7g,穗粒协调;株高接近100cm,基部节间粗短,穗下节间长,上部3叶叶开角度小,叶片披垂度小,空间态势配置合理;最大的适宜叶面积指数为7.0～7.5,有效和高效叶面积率高;不同产量水平的群体稻米品质差异小。并提出了培育高产优质群体的主要栽培要点。Population's quantity and quality characters of different level were studied by treatments of different nitrogen and density with Guangling Xiangjing.The result shows that: characters of high yield ( above 10500 kg·hm^(-2)) population has 1700000～1800000 plants·hm^(-2),3400000～3450000 ears·hm^(-2) , above 85 percent effective ears, 140～145 grains per ear, and 26.5～26.7 g per 1000-grain. And its height is about 100 cm, the length of its uppermost is longer, the length of basal is shorter and thicker, winding angels and splay angels of upper three leaves are less, the space structure of high yield plant is rational, and maximal appropriate LAI　is 7.0～7.5, percentage of effective and high effective leaf area are higher. Difference of grain quality among different yields is little. Main measures of cultivating high yield and quality population are brought forward in the end.

关 键 词：产量水平 广陵香粳 群体 成穗率 高产优质 穗数 高接 质量特征 数量 协调 

分 类 号：S511[农业科学—作物学] S512