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当前位置: 首页 > 文章 > 不同基本苗对超级稻南粳45、南粳49产量及其构成的影响 西南农业学报 2015,28 (4) 1433-1437
Position: Home > Articles > Effects of Basic Seedling on Yield and Yield Components of Super Rice Variety Nanjing 45 and Nanjing 49 Southwest China Journal of Agricultural Sciences 2015,28 (4) 1433-1437

不同基本苗对超级稻南粳45、南粳49产量及其构成的影响

作  者：
王军;仲维功;杨杰;范方军;朱金燕;李文奇;王芳权
单  位：
江苏省农业科学院粮食作物研究所/国家水稻改良中心南京分中心
关键词：
水稻;基本苗;产量;南粳45;南粳49
摘  要：
以超级稻品种南粳45和南粳49为试验材料,在高产栽培条件下,研究了每穴不同栽插基本苗数下水稻产量及构成因素的变化。结果表明:株行距统一为13.3 cm×25 cm的条件下,南粳45和南粳49都在每穴2苗的情况下实收产量最高,随着每穴苗数的增加,南粳45和南粳49实收产量逐渐降低。随着每穴苗数的增加,南粳45的单位面积有效穗数逐渐增加,穗粒数和千粒重均逐渐降低,结实率几乎没有差异;南粳49的单位面积有效穗数逐渐增加,穗粒数和结实率均逐渐降低,千粒重几乎没有差异。产量构成因子与产量的回归和通径分析结果说明南粳45产量的提高主要依靠穗粒数和千粒重的增加,南粳49产量的提高主要依靠结实率、总粒数和千粒重的增加。
译  名：
Effects of Basic Seedling on Yield and Yield Components of Super Rice Variety Nanjing 45 and Nanjing 49
作  者：
WANG Jun;ZHONG Wei-gong;YANG Jie;FAN Fang-jun;ZHU Jin-yan;LI Wen-qi;WANG Fang-quan;Institute of Food Crops,Jiangsu Academy of Agricultural Sciences/Nanjing Branch of Chinese National Center for Rice Improvement;
关键词：
Rice;;Basic seedling;;Yield;;Nanjing 45;;Nanjing 49
摘  要：
Taken super rice varieties( Nanjing 45 and Nanjing 49) as tested materials,the effects of different basic seedlings per hole on the yield and yield components under condition of high yield cultivation were studied. The results showed that the actual productions were the highest of Nanjing 45 and Nanjing 49 when planted two seedlings each hole under the same plant and row spacing 13. 3 cm × 25 cm,and with the increase of the number of seedlings per hole,the actual production gradually reduced. With the increase of the number of seedlings per hole of Nanjing 45,the effective panicles per unit area increased gradually while grain number per panicle and 1000-grain weight reduced with no differences in seed setting rate. With the increase of the number of seedlings per hole of Nanjing 49,the effective panicles per unit area increased gradually while grain number per panicle and seed setting rate reduced with no differences in 1000-grain weight. Regression and path analysis of yield components and yield indicated that raising the yield of Nanjing 45 relied mainly on the increase of grain number per panicle and 1000-grain weight,and raising the yield of Nanjing 49 relied mainly on the increase of seed setting rate,total grain number and 1000-grain weight.

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