In this experiment, Qingcui plum in Xuanhan County of Dazhou City was used as the material. Aiming at the problem of fruit cracking, the cracking rate of different prevention measures was investigated by surface mulching, root irrigation, and foliar spraying of three different Ca fertilizers. The cell growth rate and cell wall composition were determined. The results showed that surface mulching and foliar spraying had significant effects on reducing fruit cracking rate; root irrigation greatly aggravating fruit cracking; the effect of foliar spraying calcium glycol was significantly better than that of foliar spraying calcium nitrate and calcium amino acid. During the second rapid fruit expansion period, the growth rate of pulp cells was always higher than that of pericarp cells, the pectin content of the fruit showed a downward trend, and the pectin content of the cracked fruit was significantly lower than that of the normal fruit; the cellulose content of the cracked fruit was significantly lower than that of the normal fruit. Therefore, the fruit cracking may be caused by the uncoordinated growth of pulp and peel, and the lack of pectin and cellulose.

本试验以达州市宣汉县的青翠梅为材料。针对果实裂果问题，通过地表覆盖、灌根、叶面喷施3种不同钙肥，考察不同防治措施的裂果率。测定细胞生长速率和细胞壁组成。结果表明，表面覆盖和叶面喷施对降低果实裂果率有显着影响；根灌大大加重裂果；叶面喷施甘醇钙效果明显优于叶面喷施硝酸钙和氨基酸钙。在第二次果实快速膨大期，果肉细胞的生长速度始终高于果皮细胞，果实果胶含量呈下降趋势，裂果果胶含量明显低于正常果；开裂果实的纤维素含量明显低于正常果实。因此，开裂的原因可能是果肉与果皮生长不协调，缺乏果胶和纤维素。