摘要
为了探讨干旱半干旱地区不同建植类型甘草(Glycyrrhiza uralensis)根系的分布规律,比较其经济效益的高低,对马儿庄3种建植类型甘草进行了调查研究.经分析得知,3种甘草地下生物量80%分布于80 cm以上土层范围内,随深度的增加呈波状下降,人工甘草地下生物量比野生甘草随土层深度的增加减少得更快,3种甘草地下生物量分布最大的土层与分布最小的土层均不同;年均经济收益由高到低依次是单播甘草、混播甘草、野生甘草.
In order to explore root distribution pattern of different planting Glycyrrhiza uralensis in arid and semi-arid regions,and compare their level of economic efficiency,three planting types of Glycyrrhiza uralensis are investigated in Maerzhuang.The result is that,80% of the below-ground biomass of three kinds of Glycyrrhiza uralensis locates above 80 cm deep soil and the decline in below-ground biomass is wavy as the soil depth increases,the decline in below-ground biomass of cultivated Glycyrrhiza uralensis is faster than that of wild liquorices;annual economic benefits rank as unicasting Glycyrrhiza uralensis,mixed planting Glycyrrhiza uralensis and wild Glycyrrhiza uralensis.
出处
《宁夏工程技术》
CAS
2010年第4期345-348,共4页
Ningxia Engineering Technology
基金
国家自然科学基金资助项目(30660039)
宁夏农业综合开发办公室委托项目
关键词
甘草
盐池县
生物量
经济效益
Glycyrrhiza uralensis； Yanchi county； grassland resources；
