不同年份赤霞珠葡萄根系分布研究

Study of Root Distribution of Cabernet Sauvignon of Different Ages

以赤霞珠葡萄树为试验材料,研究了7年树龄、8年树龄和10年树龄葡萄根系及土壤容重的空间分布情况。结果表明,赤霞珠葡萄根系主要以小于或等于2mm的吸收根为主,其次含量较多的是2.1~5.0mm的侧根,大于或等于5.1mm的侧根较少。不同树龄随着土层深度的延伸,葡萄根系分布率呈倒U型曲线,根系集中分布在20~180cm的土层;随着水平宽度的扩增,葡萄根系的分布率呈下降趋势,根系主要集中分布在水平宽度80cm以内的土层。土壤容重沿0~200cm土壤剖面呈现出从低到高的趋势,随着年份的增加,土壤容重逐渐增大。

The spatial distribution of root and soil capacity of Cabernet Sauvignon grape at the age of 7 years,8 years and 10 years were studied.The results showed that,the root system of Cabernet Sauvignon was mainly absorbing roots less than or equal to 2 mm,followed by more lateral roots of 2.1 mm to 5.0 mm,and lateral roots greater than or equal to 5.1 mm were few.With the extension of soil depth of different grape age,the distribution rate of grape root system was in inverted U-shaped curve,and the root system was concentrated in the soil layer of 20 cm to 180 cm.With the expansion of horizontal width,the distribution rate of grape root system was decreasing,and the root system was mainly distributed in the soil layer with a horizontal width of 80 cm.Soil capacity along the soil profile of 0 cm to 200 cm showed a trend from low to high.With the increase of age,the soil capacity gradually increased.