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为了探讨根域限制栽培模式下‘巨峰’葡萄在转色期和成熟期树体不同部位碳、氮化合物含量变化特征,以根域限制培养的3年生‘巨峰’葡萄为试材,以传统土壤栽培方式为对照,测定转色期和成熟期不同组织器官中糖、淀粉、总氮和氨基酸含量。结果表明,在转色期和成熟期,根域限制树的新梢长度和叶面积显著低于对照,而果实中可溶性固形物含量显著高于对照。根域限制树的根、主干、新梢中总糖和淀粉含量均显著高于对照,总氨基酸含量约为对照的一半,除精氨酸外,其他氨基酸和全氮、硝态氮、铵态氮均低于对照。表明根域限制抑制了转色期和成熟期‘巨峰’葡萄的氮素吸收和同化,降低了树液中氨基酸的含量,使光合产物积累增加,从而促进了果实中糖的积累。
In order to explore the characteristics of carbon and nitrogen contents of ’Kyoho’ grapes in different parts of the tree during the color conversion and maturity stages under root-restricted cultivation, three-year-old ’Kyoho’ grape cultivated in the root zone was used as experimental materials, Cultivation method was as control, and the contents of sugar, starch, total nitrogen and amino acids in different tissues and organs during the color changing and maturing stages were measured. The results showed that the shoot length and leaf area in the root restriction tree were significantly lower than those in the control and the contents of soluble solids in the fruit were significantly higher than those in the control. The content of total sugar and starch in the roots, stems and shoots of the root restriction tree were significantly higher than those of the control, and the total amino acid content was about half that of the control. In addition to arginine, other amino acids and total nitrogen, nitrate nitrogen, ammonium Nitrogen is lower than the control. The results showed that root restriction restrained the nitrogen absorption and assimilation of ’Kyoho’ grapes during the conversion and mature stages, reduced the content of amino acids in the sap and increased the accumulation of photosynthetic products, which promoted the accumulation of sugars in fruits.