【摘要】 为了解决宁夏贺兰山东麓美乐（Vitis vinifera L.）果实着色不佳的问题，以喷施含0.01%(V/V)吐温20去离子水作为对照，于浆果转色初期、转色完成期、转色完成后2周、浆果转色初期+转色完成期、转色完成期+转色完成后2周、浆果转色初期+转色完成期+转色完成后2周在叶背及果穗上分别喷施300 mg/L的乙烯利和0.3%的磷酸二氢钾，分别考察喷施乙烯利和磷酸二氢钾对果实酚类物质及单体花色苷含量的影响。结果表明，喷施乙烯利和磷酸二氢钾的所有处理均显著提高了葡萄果皮总花色苷含量（P<0.05）。浆果转色初期喷施300 mg/L乙烯利对果皮总花色苷含量（12.31 mg/g）和总单宁含量（25.59 mg/g）的提升效果最佳。浆果转色初期+转色完成期+转色完成后2周分别喷施0.3%磷酸二氢钾的葡萄果皮总花色苷（9.90 mg/g）、总酚（60.33 mg/g）及总单宁（26.16 mg/g）含量最高。综上，在浆果转色初期喷施300 mg/L乙烯利或在浆果成熟过程中分3次喷施0.3%的磷酸二氢钾可以改善宁夏贺兰山东麓美乐果实着色度。更多还原

【Abstract】 To address the issue of poor coloration in Merlot(Vitis vinifera L.) fruit on the eastern foothills of Helan Mountain in Ningxia, using deionized water containing 0.01%(V/V) tween 20 as a control, the leaf back and ear were sprayed with 300 mg/L ethephon and 0.3% potassium dihydrogen phosphate at different berry veraison stages: initial veraison, final veraison, 2 weeks after final veraison, initial+final veraison, final veraison+2 weeks after final veraison, and initial+final veraison+2 weeks after final veraison, and the effects of spraying ethephon and potassium dihydrogen phosphate on phenolic compounds and monomeric anthocyanin content in the fruit were investigated. The results showed that all treatments(spraying ethephon and potassium dihydrogen phosphate) significantly increased total anthocyanin content in grape pericarp(P<0.05). Spraying 300 mg/L ethephon during initial veraison stage had the optimal effect in increasing the total anthocyanin content(12.31 mg/g) and total tannin content(25.59 mg/g) of the grape pericarp. Total anthocyanins(9.90 mg/g), total phenols(60.33 mg/g), and total tannins(26.16 mg/g) contents were the highest in grape pericarp sprayed with 0.3% potassium dihydrogen phosphate at initial veraison+final veraison+2 weeks after final veraison stages. In conclusion,spraying 300 mg/L ethephon at initial veraison stage or spraying 0.3% potassium dihydrogen phosphate three times during berry maturation could improve coloration of Merlot grape fruit on the eastern foothills of Helan Mountain in Ningxia.更多还原