“夏黑”葡萄软果果实及叶片矿质元素含量研究

Mineral Elements Concentration of Soft Fruit and Leaf of 'Summer Black' Grape

以"夏黑"葡萄为试材,通过标记葡萄果实发育期间软果果穗,测定正常和软果葡萄果实及相应位置植株上叶片中矿质元素含量,为树体营养调控和合理施肥提供依据。结果表明:"夏黑"葡萄软果后,果实硬度显著降低。正常果实和软果果实钙素含量分别为0.89、0.48mg·g^(-1),镁元素含量分别为0.49、0.37 mg·g-1,磷元素含量分别为1.47、1.12mg·g^(-1),差异显著。氮、钾元素含量差异不显著。叶片是果实成熟时主要的钙库,正常果实和软果果实叶片矿质元素含量无显著差异。果实内钙元素与其它元素含量之比,正常果高于软果,差异显著。叶片内钙元素与其它元素含量之比,正常果实和软果果实间无显著差异。

‘Summer Black＇ grape was used as materials to determine the mineral elements concentration of softing and normal fruit and relevent leaves by labling the softing fruit clusters during fruit development in order to provide theoretical basis for the nutritional regulation and rational fertilization application. The results showed that the fruit firmness decreased significantly than normal fruit after fruit softing occurred. The calcuim concentration of normal and softing fruit was 0.89 mg·g^-1 and 0. 48 mg · g^-l, the magnesium concentration of normal and softing fruit was 0.49 mg·g^-1 and 0. 37 mg·g^-l, the phosphorus concentration of normal and softing fruit was 1.47 mg· g^-1 and 1.12 mg ·g^-l, and it was different significantly. There was no difference of nitrogen and potassium concentration between normal and softing fruit, The leaf was the main sink of calcuim in fruit riping of berry. The leaf concentration of calcuim was no significant difference between two types of fruit. The ratio of calcuim concentration to other nutrient of normal fruit was higher than that of sorting fruit,and different significantly. The ratio of calcuim concentration to other nutrient of leaf was no significant difference between two types of fruit.