摘要
通过对棚架龙眼葡萄根系分布的研究,可以了解龙眼葡萄从种植到结果不同时期的根系水平分布、垂直分布变化,为合理施肥、灌水提供依据。采用改良壕沟法,对棚架栽培的龙眼葡萄定植后3～5年的架下和架后根系分布进行了观察。结果表明,定植后3年内,根系伸展速度快。进入结果期后,延伸速度逐渐变缓。根系集中分布区从定植穴逐年外移,结果后稳定在距离树干1.5m处,并在距离地面0.4～0.6m处分布最多。根系和地上部表现出明显的同侧生长的相关性,葡萄架下根系生长快,根数多,分布范围广。架后的总根数仅为架下的2/3左右,并随着树龄的增加,这个比例有逐年下降的趋势,呈不对称的“∞”型分布。对葡萄施肥时应以架下为主,架后为辅的原则。
Studies on the root distribution of Longyan grape cuhivar had been carried out in a hillside vineyard of Huailai County, Hebei Province. Pergola training system was used in this study ; the plant spacing was 2 m in row and 6 m between rows. The root system was observed by modified block method, in which 2 m in width and 1.4 to 1.6 m in depth to two side of the vine were excavated. Results showed that the horizontal spread of root system attained an average of 4.17 m in the 5^th year after planting. The horizontal roots overlapped with the vines of the neighboring row in the 4^th year after planting. In horizontal direction, roots were concentrated in 1.5 m away from the vine. The vertical development of the root system was found to reach 3.87 m in earth in the 5^th year after planting. In vertical direction, roots were concentrated in depth of 0.4 to 0.6 m. The root number under pergola was more than that in the pergola back. The root distribution was an un-symmetric ＂∞＂ shape in the two sides of vine. All this is very important for fertilizing and irrigation.
出处
《果树学报》
CAS
CSCD
北大核心
2006年第3期379-383,共5页
Journal of Fruit Science
关键词
葡萄
龙眼
根系
根类分布
Longyan grape
Pergola
Root distribution
