田间试验结果表明:在芝麻品种赣芝9号初花后24 d打顶可以获得最高产量,比不打顶(CK)增产11.8%;品质比CK好,瘪籽率比CK下降14.1个百分点;经济系数最高,综合效益好。较早期(初花后15 d和18 d)的打顶可以提高功能叶片的光合速率和叶绿素含量;后期打顶能消除空梢尖,从而有利于产量的形成。 The results of field experiments showed that the highest yield could be obtained 24 hours after initial seeding of Ganzhi No.9 sesame varieties, which was 11.8% higher than CK; the quality of CK was lower than that of CK; the deflagration seed rate was 14.1% lower than that of CK; The highest economic coefficient, good overall efficiency. The earlier stage (15 d and 18 d after initial inflorescence) could increase the photosynthetic rate and chlorophyll content of functional leaves. The latter could eliminate the tip of aerial tip, which was benefit to the formation of yield.