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当前位置: 首页 > 文章 > 土壤改良对樱花根系的影响研究 中国城市林业 2017 (4) 21-25
Position: Home > Articles > Influence of Soil Improvement on Cherry Root System Journal of Chinese Urban Forestry 2017 (4) 21-25

土壤改良对樱花根系的影响研究

作  者：
顾汤华;严巍;夏蕴强;虞莉霞
单  位：
上海辰山植物园;上海交通大学;上海市绿化管理指导站
关键词：
土壤改良;根系分布;树木雷达;影响因素
摘  要：
樱花是上海地区常见的园林树种,有着较高的观赏价值,但上海地区由于土壤板结、土壤积水及盐害等问题,常常导致樱花生长不良。该研究提出了一种适宜于上海地区的土壤改良方案,即7份土+1~3份黄沙(粒径0.4~1.0 mm)或石块或砂壤土+2~3份有机基质+0.5~0.6份有机肥+土壤结构改良剂。该文利用美国TreeRadar公司开发的树木雷达系统(TRU)对大树树木根系采用非入侵式的探测,检测了改良前后樱花根系的水平、纵向分布特点,并探讨了土壤紧实度及水分对根系分布特征的影响。研究发现土壤改良后的樱花根系数量要多于改良前,且分布广于改良前,这可能是由于土壤容重的下降以及土壤含水量的降低所致。
译  名：
Influence of Soil Improvement on Cherry Root System
作  者：
Gu Tanghua;Yan Wei;Xia Yunqiang;Yu Lixia;Shanghai Administrative & Directive Station For Afforestation;Shanghai Jiao Tong University;Shanghai Chenshan Botanical Garden;
关键词：
soil improvement;;root distribution;;treeradar;;influencing factor
摘  要：
Cherry is a common garden tree species in Shanghai,with a high ornamental value. But due to the problems like compaction,soil water and salt injury,cherry often suffers from the retarded growth. This study proposes a scheme for soil improvement in Shanghai,namely,7 sources of soils + 1 ~ 3 yellow( 0. 4 ~ 1. 0 mm in diameter) or stones or sandy loam + 2 ~ 3 organic media + 0. 5 ~ 0. 6 servings of organic fertilizer + organic matrix of soil structural modifier. This paper measured the horizontal and vertical distribution and their characteristics of cherry root system before and after the soil improvement using the tree radar system( TRU) developed by TreeRadar company in the United States for non invasive detection,and discussed the impacts of soil compactness and moisture content on the characteristics of root system distribution. It was found that after the soil improvement,cherry had higher number of roots which was more widely distributed than those before the improvement. This may be due to the decline of soil bulk density and soil water content.

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