中文摘要：

通过田间挖掘测定发现，随着土壤容重的增加，葡萄分根角度加大，水平分布变窄而垂直分布变浅。不同葡萄园的赤霞珠在土壤容重1．05～1．25g／m^3范围内有大量根系分布，当容重达到1．47g／m，时根量明显减少，当下层容重超过1．65g／m^3时根系很少生长。刘沟基地土壤疏松，0～80cm土层内均有根系分布；马格庄基地容重稍大，根系集中在0～60cm土层内；康达基地40cm以下有粘板层，根系仅分布于40cm以上土层内。在根类组成上，容重小的土层细根比例高，容重大的土层粗根比例高。深翻3个月后统计，玛瓦斯亚／110R总根量由121增加到238条，特别是下层细根数量明显增加，40～60cm和60～80cm土层内的细根量比深翻前分别增加2．95倍和2倍。由此可见，建园时深翻改土和生长过程中定时深耕是葡萄园土壤管理不可或缺的重要环节。

英文摘要：

The grapevine root system was investigated by excavated soil in the field. The results showed that the angle of branch root enlarged, horizontal distribution narrowed and vertical distribution shallowed with the increase of soil bulk density. The root system distribution of Cabernet Sauvignon in different soil bulk densities was different significantly. There were great many roots with the soil bulk density ranging from 1.05 - 1.25 g/m^3, but the root number decreased rapidly with the value increased to 1.47 g/m^3. There were few roots with the value exceeding 1.65 g/m^3. The vertical root system distributed in soil layer between 0 - 80 cm at Liugou base because of its loose soil. The root system distributed in soil layer between 0 - 60 cm at Magezhuang base because of its greater soil bulk density. But for Kangda base, the root system only concentrated in soil layer of 40cm and over because there was laminated clay below 40 cm. The proportion of fine roots in soil layer with higher soil bulk density was larger than in layer with lower density. The root number of Malvasia/110R increased from 121 to 238 three months after deep ploughing. The root numbers in 40 - 60cm layer and 60 - 80cm layer increased 2.95 times and 2 times respectively.