采前喷施叶面肥对火龙果贮藏性能的影响

Effect of Pre-harvest Foliar Fertilization on Storability of Dragon Fruit

以火龙果为试验材料,研究果实采前喷施不同浓度磷酸二氢钾叶面肥对果实品质和外观的影响。结果表明:喷施磷酸二氢钾叶面肥可以提高果实还原糖、可滴定酸和甜菜碱的质量含量,延缓贮藏期间果实硬度和可溶性固形物质量分数的下降,降低贮藏期间果实的腐烂速率。其中,0.016 mol/L磷酸二氢钾处理有效延缓了果实V_(C)、蛋白质和甜菜碱质量含量的下降,降低了贮藏过程中果实的腐烂速率,使果实保持良好的外观品质。因此,果实采前喷施0.016 mol/L磷酸二氢钾叶面肥更有利于火龙果的贮藏。

The effect of pre-harvest foliar application of different concentrations of potassium dihydrogen phosphate fertilizer on the quality and appearance of dragon fruit was studied using dragon fruit as the experimental material.The results showed that foliar application of potassium dihydrogen phosphate fertilizer increased the content of reducing sugar,titratable acid,and betaine in the fruit,delayed the decrease in hardness and soluble solid content during fruit storage,and reduced the rate of fruit decay during storage.Among them,the treatment with 0.016 mol/L of potassium dihydrogen phosphate effectively delayed the decrease in vitamin C,protein,and betaine content in dragon fruit,reduced the rate of fruit decay during storage,and maintained good fruit quality.Therefore,pre-harvest spraying of 0.016 mol/L potassium dihydrogen phosphate is more beneficial for the storage of dragon fruit.