In order to solve the problem of fruit appearance of Zheli No.6 affected by persistent or remnant ca-lyxes and fruit apex convexity,three kinds of calyx removal agents,PBO,flusilazole and propiconazole,were selected for treatment with water as the control.The result showed that compared with control,the calyx re-moval rate of the fruits treated with the three calyx removal agents increased by 23.27％-26.01％,and the top convex rate decreased by 24.55％-26.44％.The proportion of oblate fruit,single fruit weight and total soluble solids content increased by 33.19％-37.66％,37.9-57.1 g and 0.68％-0.94％,respectively,but the degree of fruit oblique and full rust fruit rate were higher by 0.54％-0.74％and 18.36％-19.23％.The regular fruit rate and fruit setting rate decreased by 15.89％-21.07％and 5.43％-6.62％,and the differ-ences were significant or extremely significant.Spraying calyx removal agents of 4 000 mg·L-1,333.3 mg·L-1 and 444.4 mg·L-1 during the inflorescence separation period could effectively reduce the adverse effects on fruit setting rate and degree fruit oblique,while ensuring the effect of preventing calyx and convex.
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