摘要
采用原位取土法和根系生态监测系统连续两年研究了葡萄的根系空间分布和全生育期根系生长动态,结果表明:葡萄根系在水平方向主要分布在距离树干100 cm的范围内,占到总根系的80%以上,而且在径向方向呈指数衰减;葡萄根系在垂直方向主要分布在0～60 cm范围的土层内,占到总根系的75%以上。根系分区交替滴灌条件下干燥区与湿润区根系生长是不同的,葡萄的新生根系受到土壤水分条件的限制和自身生长的影响。在整个生育期,葡萄根系分区交替滴灌两侧根系生长均呈抛物线变化。
The special distribution of root and root growing dynamic in the grape growth period were studied with a core sampling scheme and ET- 100 system. The results showed that roots of grape vine centralized in the radial space between 0 and 100 cm, and the amount of the roots accounted for over 80% of total roots. The horizontal distribution of root density of grape vine was minus exponent. The roots of grape vine centralized in the depth between 0 and 60 cm, and the amount of the roots accounted for over 75% of total roots. Under the alternate partial root zone irrigation, the available root of grape vine grew differently in the wetted zone and in the dry zone. It was limited by soil moisture condition and its own growing. The distribution of new root of grape vine was parabola in both the wetted zone and the dry zone.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2011年第9期59-63,58,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(50679081
50679055)
关键词
交替灌溉
葡萄根系
生长动态
微根管
Alternate partial root zone irrigation, Grape root, Growing dynamic, Minirhizotron
