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以“泗棉 3号”作为近期育成的棉花高产品种的典型代表 ,与不同时期、生态型和产量结构型的“苏棉5号”、“中棉所 12”进行比较 ,研究高产品种的产量构成特点 ,以期为棉花新品种的选育提供一些参考依据。结果显示 :高产棉花品种具有结铃性强 (结铃率可达 4 0 %以上 ) ;成铃时空分布合理 ,尤其是中上部结铃多 ;铃重中等 (4～4 .5g) ;衣分高 (4 0 %以上 ) ;经济系数 (包括单铃经济系数 )高和适应性广、补偿能力强等特点。这些特点有利于产量构成因子在较高产量水平上保持协调与平衡。
Using Simian No.3 as a typical representative of high-yielding varieties of cotton recently, it was compared with Sumaian 5 and Zhongmiansuo 12 in different periods, ecotypes and yield structures to study the yield of high-yielding varieties Constitute features, with a view to breeding new varieties of cotton to provide some reference. The results showed that the high yielding varieties of cotton have the advantages of strong ringing (boll rate up to 40%); the spatial and temporal distribution of the bolls is reasonable, especially in the middle and upper bolls; moderate boll weight (4-5.5g) High (more than 40%); economic coefficient (including single bell economic coefficient) and wide adaptability, ability to compensate and so on. These characteristics help to keep the yield components at a higher level of production coordination and balance.