葡萄园生草对葡萄与葡萄酒质量的影响

大多数研究认为,葡萄园生草可有效控制植株的生长势,减少夏季和冬季修剪量,促进根系向土壤深层发展,生草能降低葡萄叶片营养元素含量和葡萄果实产量,可调节葡萄园温度和湿度,改善葡萄园微气候,减少病虫害,提高果实品质,使果实含酸量降低,含糖量和糖酸比升高,同时提高了红葡萄酒中花色素苷、多酚含量及pH,使酒体颜色加深,结构感增强,从而提高葡萄酒的质量。今后应进一步加强葡萄园生草对葡萄与葡萄酒质量影响机理的研究。

Effects of grass cover in vineyard on the vine growth and wine quality

Most of research results showed that the grass cover in vineyard could reduce the vine vigor, decrease the work amount of summer trimming and winter pruning. Under grass cover conditions the vine roots could be stimulated to penetrate deep into the subsoil. At the same time, grass cover in vineyard could reduce the leaf nutrimental element content and production;but on the other hand it improves the microclimate conditions and the berry quality. The berry has lower titratable acidity and higher sugar contents than those grown in clean tillage conditions; the pH value, anthocyanin and polyphenol contents in wine are increased, made significant difference in wine color and configuration. It can be concluded that grass cover improves the quality of grape berry and wine evidently.