不同株型桃树根系生长特性比较

Compare on Characteristics of Root System in Different Type of Peach Tree

以垂枝型、柱型、标准型3种株型桃树为试材,采用大田挖掘法,研究了不同时期3种株型桃树枝条和根系生长状况,明确植株地上部性状与根系性状间的相关关系,结果表明,5月3种株型地上部生长基本一致,在6月中旬垂枝型的一次枝条发生下垂,垂枝型枝条延伸角达到92.5°,而标准型与柱型的主枝延伸角分别为63.0°、51.0°,此时3种株型枝条出现显著差异;5月到9月3种株型桃树品种生长期内根系活力变化趋势相同,均呈上升趋势,但根系数量上3种株型标准型>柱型>垂枝型,其根系特性变化与地上部枝条的变化均表现出相同的趋势,地上部长势的不同影响根系的生长状况。

The shoots growth habits and roots traits of three different types of peach trees （weeping, pillar, and standard） in different period were studied by a field experiment using roots scanner and analysis system. The purpose of this study was to investigate the correlations between shoots characters and roots characters. The results showed that no evident changes were found in May, the weeping trees grew downward in the middle of June. The extended angle of weeping form was 92.5 , but the bough of pillar and standard form were 63.0 and 51.0 , the differences of three peach trees were significant. The change trends of root activity were similar from May to September, the results indicated that the quantity of three peach trees was in order of standard 〉 pillar 〉 weeping, the change trends of roots character and shoots were Similar. The growth of root system was influenced by the aerial part.