【摘要】 为了改善宁夏贺兰山东麓美乐果实着色不佳的问题，分别设置新梢密度（8个、12个和16个新梢/m架面）、负载量（1.0个、1.5个和>2.0个果穗/新梢）、叶幕高度（100 cm、120 cm和140 cm）、摘叶时期（浆果转色初期、转色完成期和转色完成后2周）及不摘叶，测定果实酚类物质及单体花色苷的含量。结果表明，12个新梢/m架面处理的果皮总花色苷、总酚及总单宁含量分别为10.19 mg/g、44.38 mg/g、19.38 mg/g，显著高于其他处理（P<0.05）; 1.5个果穗/新梢处理的果皮总花色苷、总酚及总单宁含量分别为13.40 mg/g、49.62 mg/g、25.97 mg/g，显著高于其他处理（P<0.05）；叶幕高度140 cm处理的果皮总花色苷、总酚及总单宁含量分别为12.63 mg/g、62.98 mg/g、22.88 mg/g，显著高于其他处理（P<0.05）；浆果转色初期摘除果穗以下老叶的果皮总花色苷、总酚及总单宁含量显著高于不摘叶处理（P<0.05）。因此，贺兰山东麓美乐采取12个新梢/m架面、1.5个果穗/新梢、叶幕高度140 cm、浆果转色初期摘除果穗以下老叶等栽培措施显著提高果实总花色苷、总酚及总单宁含量，可有效改善美乐果实着色不良问题。更多还原

【Abstract】 To improve the problem of poor coloration of Merlot berry from the eastern foothills of Helan Mountain in Ningxia, the shoot density(8 shoots/m trellis, 12 shoots/m trellis and 16 shoots/m trellis), fruit load(1.0 clusters/shoot, 1.5 clusters/shoot and >2.0 clusters/shoot), canopy height(100 cm, 120 cm and 140 cm), leaf removal timing(early stage of veraison, completion stage of veraison and two weeks post-veraison), and no leaf removal were set, and the contents of phenolic compounds and monomeric anthocyanins in grape berries were measured. The results showed that the contents of total anthocyanins, total phenolics and total tannins in pericarp with 12 shoots/m trellis treatment were 10.19 mg/g, 44.38 mg/g and 19.38 mg/g,respectively, which were significantly higher than those of other treatments(P<0.05). The contents of total anthocyanins, total phenolics and total tannins in pericarp with 1.5 clusters/shoot treatment were 13.40 mg/g, 49.62 mg/g and 25.97 mg/g, respectively, which were significantly higher than those of other treatments(P<0.05). The contents of total anthocyanins, total phenolics and total tannins in pericarp with canopy height 140 cm treatment were 12.63 mg/g, 62.98 mg/g and 22.88 mg/g, respectively, which were significantly higher than those of other treatments(P<0.05). Removing old leaves below the clusters at the early stage of veraison, the contents of total anthocyanins, total phenolics and total tannins in pericarp were significantly higher than those of no leaf removal treatment(P<0.05). Therefore, implementing cultivation practices such as 12 shoots/m trellis, 1.5 clusters/shoot, canopy height 140 cm, and removing old leaves below the clusters at the early stage of veraison, significantly increased the contents of total anthocyanin, total phenol and total tannin in the berry, effectively improving the poor coloration issue of Merlot berry.更多还原